RRB JE ME (CBT II) Mock Test- 1

# RRB JE ME (CBT II) Mock Test- 1

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## 150 Questions MCQ Test RRB JE Mock Test Series for Mechanical Engineering (ME) | RRB JE ME (CBT II) Mock Test- 1

RRB JE ME (CBT II) Mock Test- 1 for Railways 2023 is part of RRB JE Mock Test Series for Mechanical Engineering (ME) preparation. The RRB JE ME (CBT II) Mock Test- 1 questions and answers have been prepared according to the Railways exam syllabus.The RRB JE ME (CBT II) Mock Test- 1 MCQs are made for Railways 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB JE ME (CBT II) Mock Test- 1 below.
Solutions of RRB JE ME (CBT II) Mock Test- 1 questions in English are available as part of our RRB JE Mock Test Series for Mechanical Engineering (ME) for Railways & RRB JE ME (CBT II) Mock Test- 1 solutions in Hindi for RRB JE Mock Test Series for Mechanical Engineering (ME) course. Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free. Attempt RRB JE ME (CBT II) Mock Test- 1 | 150 questions in 120 minutes | Mock test for Railways preparation | Free important questions MCQ to study RRB JE Mock Test Series for Mechanical Engineering (ME) for Railways Exam | Download free PDF with solutions
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RRB JE ME (CBT II) Mock Test- 1 - Question 1

### The effective resistance between points P and Q of the electrical circuit shown in the figure is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 1

The circuit is symmetrical about axis POQ. Therefore the equivalent circuit is drawn.

RRB JE ME (CBT II) Mock Test- 1 - Question 2

### What is the full form of MIPS?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 2 Million Instructions Per Second (MIPS) is a method of measuring the raw speed of a computer’s processor but not the whole system. 1 MIPS is 10,00,000 instructions per second.
RRB JE ME (CBT II) Mock Test- 1 - Question 3

### Which of the following statements is true?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 3 Global warming will reduce the annual build-up of glacier ice. Global warming is the slow increase in the average temperature of the earth’s atmosphere because an increased amount of the energy (heat) striking the earth from the sun is being trapped in the atmosphere and not radiated out into space.
RRB JE ME (CBT II) Mock Test- 1 - Question 4

If a refrigerant is undergoing expansion, which of the following remains constant?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 4 Expansion is an adiabatic process, and hence enthalpy remains constant. Since it expands, work is done, and since work is done, internal energy changes.
RRB JE ME (CBT II) Mock Test- 1 - Question 5

Identify one only fissile fuel from the following

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 5 Thorium is fissile fuel, fissile fuel means the fuel formed by continuous chain reaction of neutrons of any energy
RRB JE ME (CBT II) Mock Test- 1 - Question 6

Power screws are designed in how many types of arrangements?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 6 Power screws are designed in 2 types of arrangements, one type of power screw is that in which the screw rotates while the nut remains stationary and the other one of the type in which the screw remains stationary and the nut rotates.
RRB JE ME (CBT II) Mock Test- 1 - Question 7

From the following, where should work study be used?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 7 Work study involves finding the standard time for an operation. Analysis the ways to improve or reduce the time is also part of work study. Hence, a work study is used where production activities are involved.
RRB JE ME (CBT II) Mock Test- 1 - Question 8

What is the benefit that one can get from industrial engineering?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 8 The use of industrial engineering will definitely help to improve coordination between man, material and machine. Process flow can also be improved by using the methodology of industrial engineering.
RRB JE ME (CBT II) Mock Test- 1 - Question 9

Thermal conductivity is defined as?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 9 Thermal conductivity is defined as Heat flow per unit time across the unit area, wherein the temperature gradient is unity. Every material has thermal conductivity due to the movement of free electrons and vibrational waves across the lattice structure.
RRB JE ME (CBT II) Mock Test- 1 - Question 10

By how many ways can heat be transferred from one object to another?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 10 Heat can be transferred from one object to another object in 3 ways. The three ways are conduction, convection, and radiation.
RRB JE ME (CBT II) Mock Test- 1 - Question 11

Which one of the following is an example of an output computer device?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 11 Input devices - An input device can send data to another device, but it cannot receive data from another device.

e.g., mouse and a keyboard

Output devices - An output device can receive data from another device and generate output with that data, but it cannot send data to another device.

e.g., monitor and a printer

RRB JE ME (CBT II) Mock Test- 1 - Question 12

Stiffness is measured as?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 12 Stiffness is defined as the ability of a material to resist deformation when the load is applied. Thus, it is measured as a modulus of elasticity.
RRB JE ME (CBT II) Mock Test- 1 - Question 13

Rate of heat transfer is denoted by?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 13 Heat transfer has unit Joules, but the heat transfer rate has a unit, Joules/sec, i.e., Watt. Since it measures the amount of heat with respect to time.
RRB JE ME (CBT II) Mock Test- 1 - Question 14

Which force acts on a liquid to give rise to surface tension?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 14 Surface tension arises in a liquid due to unbalanced forces acting on the liquid. To have unbalanced forces, two forces are needed, and hence both cohesive and adhesive force acts on the liquid. An adhesive force acts upwards due to gaseous molecules around the liquid, and cohesive force due to liquid molecules acts downward.
RRB JE ME (CBT II) Mock Test- 1 - Question 15

Calculate the moment of force at point R, if The force at point P is 1500N and acting downwards, the distance RP is 4M, and the angle between them is 30˚.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 15 Moment of force is calculated by force multiplied by the distance. Thus using the same formula, we have force as 1500 N and distance is 4 M, but force component perpendicular to the distance also needs to be taken into account, and that is sin 30, which is 0.5, and thus we can calculate the moment of force by 1500 x 4 x 0.5 = 3000 Nm.
RRB JE ME (CBT II) Mock Test- 1 - Question 16

If a four stroke engine with a single cylinder is rotating at 2000 RPM, how many power strokes does it completely in 1 minute?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 16 For a four-stroke engine, two revolutions complete one cycle and hence, If speed is 2000 rpm then the number of complete cycles per minute is 1000.
RRB JE ME (CBT II) Mock Test- 1 - Question 17

In a multi cylinder engine, what does firing order mean?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 17 Firing order means the sequence in which the cylinders generate power stroke in multi cylinder engines. This firing order is achieved by placing the spark plug according to the desired firing order. Correct firing order is necessary to achieve smooth running of the engine, less vibration and correct engine balance.
RRB JE ME (CBT II) Mock Test- 1 - Question 18

Who of the following is not a full -time member of NITI Ayog?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 18 Amitabh Kant is the present CEO of the NITI Ayog but is not one of the full-time members.

Full-time Members: Bibek Debroy (Economist), V. K. Saraswat (former DRDO Chief), Ramesh Chand (Agriculture Expert) and Dr. Vinod Paul (Public Health expert)

RRB JE ME (CBT II) Mock Test- 1 - Question 19

According to Newton's law of motion, is it possible to swim?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 19
• Newton's third law states that every action must have an equal and opposite reaction.

• In swimming, when the hands and feet push against the water, the water pushes back on the swimmer and propels the swimmer forwards.

RRB JE ME (CBT II) Mock Test- 1 - Question 20

__________ is used as a programming language in first generation computers?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 20 A first generation (programming) language (1GL) is a grouping of programming languages that are machine level languages used to program first-generation computers.
RRB JE ME (CBT II) Mock Test- 1 - Question 21

Which weed is widely used to reduce water pollution caused by industries effluents?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 21 Elephant Grass is a common weed i.e. widely used to reduce water pollution caused by industries effluents. It has several environmental impacts like prevention from soil erosion, it acts as pest control agent etc.
RRB JE ME (CBT II) Mock Test- 1 - Question 22

Limit system?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 22 The limit system is a series of tolerances. They are designed in a way to suit a specific range of sizes. First, they help in selecting the size of limits and then they are given to mating parts to get the required type of fit in the mating parts.
RRB JE ME (CBT II) Mock Test- 1 - Question 23

If the spring index is 4 , the Wahl’s factor would be?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 23

Wahl's Correction factor is given by

Where, C= Spring index.

RRB JE ME (CBT II) Mock Test- 1 - Question 24

Which one of the following is not alkaline?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 24 Alkaline refers to a nutrient solution or growing media with a pH greater than 7. Alkaline soils are normally composed of various types of materials such as calcium carbonate. Highly alkaline soils are more prevalent in dry regions. Because soil pH is directly linked to nutrient availability, alkaline soils tend to have a deficiency in phosphorus, zinc, and iron. So sulphur is not an alkaline .
RRB JE ME (CBT II) Mock Test- 1 - Question 25

On the traditional lathe machine, lead screws are _______ type of screw.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 25 Traditional lathe machines have mechanically driven lead screws. The lead screw is moved forward and backward by using a round handle.
RRB JE ME (CBT II) Mock Test- 1 - Question 26

Who among the following considered the "Right to Constitutional Remedies' ' to be the heart and soul of the Indian Constitution?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 26 Dr. B. R. Ambedkar called 'Article 32' of the Indian Constitution, i.e., Right to Constitutional remedies as 'the heart and soul of the Constitution.
RRB JE ME (CBT II) Mock Test- 1 - Question 27

Industrial engineering involves?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 27 Industrial engineering is a branch of science that helps optimize complex processes, resources, developing and improving the level of operating people.
RRB JE ME (CBT II) Mock Test- 1 - Question 28

Which of the following is the ultimate source of energy for human beings?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 28 Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants, and artificial photosynthesis. For humanity the sun is the ultimate source of energy.
RRB JE ME (CBT II) Mock Test- 1 - Question 29

Imparting heat to the system will lead to ?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 29 Heating imparting to a system will lead to increase in internal energy. This internal heat is increased since the motion of molecules increases, and thus entropy also increases.
RRB JE ME (CBT II) Mock Test- 1 - Question 30

The time in which a transformer is used in welding in normal load conditions?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 30 The amount of time during which the transformer will be used for welding under normal loading conditions is known as the duty cycle. Weld time is the actual time taken to complete the weld.
RRB JE ME (CBT II) Mock Test- 1 - Question 31

A vapor refrigeration cycle comprises?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 31 These processes when working together they form a vapor refrigeration cycle. The refrigerant undergoes all these processes to give the refrigerator the required cooling effect.
RRB JE ME (CBT II) Mock Test- 1 - Question 32

The concept of Time study comes under?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 32 Time study comes exclusively under Industrial engineering. It deals with the study of time required in an operation sequence carried out at a working station by the operator.
RRB JE ME (CBT II) Mock Test- 1 - Question 33

For a fluid to be in equilibrium, which condition is satisfied?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 33 Equilibrium means the forces are balanced, and the whole system is at rest. For this to take place in a fluid, buoyant force has to be equal to the weight of the body and center of buoyancy should be above the center of gravity. If its below the buoyant force will come into action and unbalance force will arise leading to disturbing the equilibrium.
RRB JE ME (CBT II) Mock Test- 1 - Question 34

Which Indian private sector bank has the maximum number of foreign branches ?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 34 ICICI bank has the maximum number of foreign branches amongst the private sector banks.

SBI leads the list of public sector banks, followed closely by Bank of Baroda.

RRB JE ME (CBT II) Mock Test- 1 - Question 35

Which of the following is NOT a rich source of Calcium?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 35 Carrots are a good source of several vitamins and minerals, especially vitamin A(from beta-carotene), biotin, vitamin K (phylloquinone), potassium and vitamin B6. Vitamin A: Carrots are rich in beta-carotene, which is converted to vitamin A in the body.
RRB JE ME (CBT II) Mock Test- 1 - Question 36

In a polishing operation, from the following which grit size will have better surface finish?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 36 Grit size means amount that a unit area removes material, and hence more the size of grit less will be the metal removal and so 120 grit size will remove less material and subsequently will give better surface finish.
RRB JE ME (CBT II) Mock Test- 1 - Question 37

Which type of tools are used for machining?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 37 For machining operations, various types of tools are required. They can be both single point cutting tools as in case of boring operation while milling a multi point cutting tool is used.
RRB JE ME (CBT II) Mock Test- 1 - Question 38

A rectangular shaped fin is cut longitudinally, the result will be?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 38 The material of fin will not decide the change in heat transfer. The heat transfer will increase since more surface area will be exposed to air since the fin is cut, and so heat transfer will increase.
RRB JE ME (CBT II) Mock Test- 1 - Question 39

If we 60H9/g6 have, then what does 60 represents

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 39 This common terminology used in metrology. Here 60 represents the basic size of the hole and shaft. 9 and 6 are tolerance size while, H represents the zone in which the tolerance lies with respect to zero line for the hole and g represents the zone in which the tolerance lies with respect to zero line for shaft.
RRB JE ME (CBT II) Mock Test- 1 - Question 40

To form a couple the two forces should be separated by a distance of?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 40 The distance between both the forces should be finite so as to form a couple system. Both the forces act in opposite directions to provide rotational motion to the body.
RRB JE ME (CBT II) Mock Test- 1 - Question 41

An example of an abiotic component of the environment is __________________.

• Examples of abiotic components are rain, wind, temperature, altitude, soil, pollution, nutrients, pH, types of soil, and sunlight.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 41
RRB JE ME (CBT II) Mock Test- 1 - Question 42

X–rays can be used-

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 42 X rays are frequently used to check the defects in Diamonds and other precious stones.
RRB JE ME (CBT II) Mock Test- 1 - Question 43

Among the following Greenhouse effects in the atmosphere?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 43 As carbon dioxide continues to increase in the atmosphere and the greenhouse effect causes temperatures to rise, seawater will expand, and therefore water levels will rise.
RRB JE ME (CBT II) Mock Test- 1 - Question 44

Calculate machining time in min, if length of the tool travel is 15mm, feed per revolution of drill is 6mm and RPM is 2.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 44

we use the formula as

T=1.25 min

RRB JE ME (CBT II) Mock Test- 1 - Question 45

If a component needs rough machining, which grinding wheel must be used?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 45 To get a rough surface after machining, a coarse wheel must be used. This wheel will give a better metal removal rate, and space for chip removal as the rate of chip flow in rough machining is high.
RRB JE ME (CBT II) Mock Test- 1 - Question 46

Which state’s government observed the martyrdom day of Bhagat Singh, Sukhdev and Rajguru as 'Youth Empowerment Day?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 46 The Punjab Government observed March 23, the martyrdom day of Shaheed-e-AzamBhagat Singh, ShaheedSukhdev and ShaheedRajguru as 'Youth Empowerment Day'. In the state-level function organised at KhatkarKalan, the ancestral village of Bhagat Singh in ShaheedBhagat Singh Nagar district, Punjab Chief Minister Captain Amarinder Singh paid homage to the three freedom fighters.
RRB JE ME (CBT II) Mock Test- 1 - Question 47

Which of the following is not true regarding the exchange rate of the Indian Rupee?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 47 The value of the Indian Rupee depends on how much the Indian Rupee can buy one US dollar. Because in 1966, India pegged the rupee to the dollar. A peg to the dollar means that a country keeps its currency's value at the same exchange rate as the US dollar. And it is not decided by the Reserve Bank of India.
RRB JE ME (CBT II) Mock Test- 1 - Question 48

Which of the following statements is true?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 48 The TCP/IP model, which is realistically the Internet Model, came into existence about 10 years before the OSI model. The four-layer Internet model defines the Internet protocol suite, better known as the TCP/IP suite.
RRB JE ME (CBT II) Mock Test- 1 - Question 49

Which wetland of India is recently enlisted in the conservatory list of Ramsar?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 49 Sundarbans is recently enlisted in the conservatory list of Ramsar. Ramsar Site is a wetland site designated of international importance under the Ramsar Convention. The Convention on Wetlands, known as the Ramsar Convention.
RRB JE ME (CBT II) Mock Test- 1 - Question 50

Self-linking ability of carbon is called-

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 50 Catenation is the bonding of atoms of the same element into a series, called a chain.
RRB JE ME (CBT II) Mock Test- 1 - Question 51

For black body, the value of transmissivity is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 51 For black body, the value of transmissivity is 0 because all the incident rays get adopted in a black body.
RRB JE ME (CBT II) Mock Test- 1 - Question 52

A centrifugal compressor consists of;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 52 A centrifugal compressor consist of a stationary casing, a rotating impeller and a diffuser.
RRB JE ME (CBT II) Mock Test- 1 - Question 53

The number of instantaneous centers when there are 5 links will be?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 53

The number of instantaneous centers when there are 5 links will be 10.

RRB JE ME (CBT II) Mock Test- 1 - Question 54

Gears of the same size and connecting two shafts at right angle to each other is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 54 Gears of identical size and connecting two shafts at the right angle to each other a itsMitre gears.

RRB JE ME (CBT II) Mock Test- 1 - Question 55

When a solid is subjected to pure torsional moment, the torsional shear stress is given by

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 55

When a solid is subjected to pure torsional moment, the torsional shear stress is given by where d= shaft diameter.

RRB JE ME (CBT II) Mock Test- 1 - Question 56

The standard symbol for storage in operation research is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 56 The standard symbol for storage in operation research is ▽
RRB JE ME (CBT II) Mock Test- 1 - Question 57

M/s tire tubes limited manufactures tire tubes for 2 wheelers. The Annual demand for the tire costing Rs. 200 per piece is 15000. The ordering cost is Rs. 100 and the cost for holding the inventory is Rs. 3.5 per unit per year. The E.O.Q will be;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 57

RRB JE ME (CBT II) Mock Test- 1 - Question 58

Inventories are done to;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 58 Reason to keep inventories is to stabilize the production, take advantage of price discount, prevent loss of order and meet the demand during replenishment.
RRB JE ME (CBT II) Mock Test- 1 - Question 59

When the projectile angle is 45o , the range of the projectile is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 59 When the projectile angle is 45o, the range of the projectile is maximum.
RRB JE ME (CBT II) Mock Test- 1 - Question 60

The coefficient of restitution for elastic bodies is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 60 Coefficient of restitution for elastic bodies is 0 - 1.

Coefficient of restitution for perfectly elastic bodies is 1

RRB JE ME (CBT II) Mock Test- 1 - Question 61

Dynamic friction is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 61 Dynamic friction is the friction experienced by an object, when in motion.
RRB JE ME (CBT II) Mock Test- 1 - Question 62

The principle of transmissibility of force states;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 62 Principle of transmissibility states that;When force acts upon a body, the effect of it is the same in all the points that come along its line of action. The point in the line of action is taken as the point of application provided that the point is connected with the rest of the body.''
RRB JE ME (CBT II) Mock Test- 1 - Question 63

In coplanar non-concurrent non-parallel force system,

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 63 In coplanar non-concurrent non-parallel force systems, the lines of action of all forces lie in the same plane but do not pass through a common point.
RRB JE ME (CBT II) Mock Test- 1 - Question 64

A technique in which total variable and fixed costs are compared with sales revenue in order to determine the level of sales volume or production at which the business makes no profit or loss is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 64 A technique in which total variable and fixed costs are compared with sales revenue in order to determine the level of sales volume or production at which the business makes no profit or loss is, Break even Analysis.
RRB JE ME (CBT II) Mock Test- 1 - Question 65

Passive forecasting is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 65 Passive forecasting is the forecasting which assumes a non changing environment in the future
RRB JE ME (CBT II) Mock Test- 1 - Question 66

In an Iron-carbon diagram, the percentage of carbon present in hyper eutectoid steels is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 66 In an Iron-carbon diagram, the percentage of carbon present in hyper eutectoid steels is from 0.8-2.1%.
RRB JE ME (CBT II) Mock Test- 1 - Question 67

Phosphorous as alloy is used in steel;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 67 Phosphorus in steel is used to improve the machinability in free cutting steel
RRB JE ME (CBT II) Mock Test- 1 - Question 68

Case hardening is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 68 Case hardening is the process of increasing the hardness of only the surface by the process of diffusion of carbon & nitrogen.
RRB JE ME (CBT II) Mock Test- 1 - Question 69

While quenching austenite below 725 degree celsius, if there is no change in the microstructure of it this period is called

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 69 Incubation period is the period in which while quenching austenite below 725 degree celsius, for the substantial period there is no change in the microstructure of it.
RRB JE ME (CBT II) Mock Test- 1 - Question 70

In the welding process,consumable electrodes are used in

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 70 In the welding process, consumable electrodes are used in metalthe inert gas welding.
RRB JE ME (CBT II) Mock Test- 1 - Question 71

In the shielded metal arc welding, the temperature between the core of the arc ranges between

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 71 In the shielded metal arc welding, the temperature between the core of the arc ranges between 6000oC - 7000oC
RRB JE ME (CBT II) Mock Test- 1 - Question 72

Angle of a machined surface can be measured indirectly by using;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 72 The angle of a machined surface can be measured indirectly by using Sine Bar. High carbon and high chromium material are used for sine bars as it gives a good surface finish.
RRB JE ME (CBT II) Mock Test- 1 - Question 73

If the maximum size of the hole is smaller than the minimum size of the shaft, such fits are called

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 73 If the maximum size of the hole is smaller than the minimum size of shaft, then force has to be applied to make the assembly; such fits are called Interference fit.
RRB JE ME (CBT II) Mock Test- 1 - Question 74

To check both holes and shafts tolerance limits

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 74 Go gauge and No Go gauge are designed to check whether they come within the tolerance limit or not.
RRB JE ME (CBT II) Mock Test- 1 - Question 75

In metrology, the surface finish can be measured by

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 75 In metrology, the surface finish can be measured by the MNE system.
RRB JE ME (CBT II) Mock Test- 1 - Question 76

To make the dynamometer more effective, how many active gauges will be used in a strain gauge dynamometer?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 76 In a strain gauge dynamometer, 3 active gauge will be used to make the dynamometer more effective.
RRB JE ME (CBT II) Mock Test- 1 - Question 77

Supercharging of the engine is done

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 77 Supercharging of the engine is done to increase the power output of the engine.
RRB JE ME (CBT II) Mock Test- 1 - Question 78

Choose the correct option which indicates the objective of the Morse test.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 78 Morse test is done to test Indicated power of a multi-cylinder engine.
RRB JE ME (CBT II) Mock Test- 1 - Question 79

The standard firing order in a four-cylinder petrol engine is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 79 The standard firing order in a four-cylinder petrol engine is 1-3-4-2.

The firing order is the sequence of power delivery of each cylinder in a multi-cylinder reciprocating engine.

RRB JE ME (CBT II) Mock Test- 1 - Question 80

In India, the octane number of the fuel used commercially for diesel engine

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 80 In India, the fuel having an octane number between 40-45 is used commercially for diesel engines.
RRB JE ME (CBT II) Mock Test- 1 - Question 81

A refrigerator working on a reversed carnot cycle has a COP of 3. If the machine works as a heat pump,then find out its COP.

RRB JE ME (CBT II) Mock Test- 1 - Question 82

Calculate the power require for the machine in removing the heat at the rate of 1700 KJ/min.(COPR) = 3

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 82

R.E=1700 KJ/min

= 28.33KW

w=R.E/COP

= 28.33KW/3= Power

Power= 9.44KW

RRB JE ME (CBT II) Mock Test- 1 - Question 83

Find the refrigeration effect in a vapour compression refrigeration plant when the refrigeration leaves the evaporator and the condenser at 205 KJ/kg and 85 KJ/kg. Consider the mass flow rate as 1.5kg/sec.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 83 R.E= mass flow rate x (Hevaporator - Hcondensor

R.E=1.5 x (205-85)

= 180KW

RRB JE ME (CBT II) Mock Test- 1 - Question 84

A carnot refrigerator has a COP of 5. What is the ratio of the lower to the higher absolute temperatures?

RRB JE ME (CBT II) Mock Test- 1 - Question 85

A gas turbine is a type of a/an

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 85 A gas turbine is a type of an internal combustion engine where the combustion process takes place in the combustion chamber of the engine.
RRB JE ME (CBT II) Mock Test- 1 - Question 86

What among the following boiler mounting is used to protect the boiler against the damage due to overheating for low water level?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 86 Fusible plug is a boiler mounting used to protect the boiler against the damage due to overheating for low water level.
RRB JE ME (CBT II) Mock Test- 1 - Question 87

In a close system, heat transfer at constant volume

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 87 In an isochoric process the work done by the system is zero. Hence heat transfer within constant volume will only increase the internal energy of the system(using 1st law of thermodynamics.)
RRB JE ME (CBT II) Mock Test- 1 - Question 88

Which among the following is the dimensionless quantity?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 88 Since specific gravity is the ratio of density of the fluid to the density of standard fuel. Hence both densities get cancelled.
RRB JE ME (CBT II) Mock Test- 1 - Question 89

Ultrasonic machining is used in;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 89 Ultrasonic machining is used in making dies, machining hard carbides, glasses and stones and dental application.
RRB JE ME (CBT II) Mock Test- 1 - Question 90

Removing the metal by using the high velocity stream of abrasive particles carried by high pressure gas through a nozzle on the workpiece is;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 90 AJM is removing the metal by using the high velocity stream of abrasive particles carried by high pressure gas through a nozzle on the workpiece.
RRB JE ME (CBT II) Mock Test- 1 - Question 91

Choose the option which is not true for the properties of cutting fluid used in metal cutting

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 91 If the cutting fluid will have low thermal conductivity, then the cooling of heat generation will also be slow and chances of wear and tear of the tool due to heat generation will increase.
RRB JE ME (CBT II) Mock Test- 1 - Question 92

Following is the data available on cutting speed and tool life

V=160m/min, T=50min

V=200m/min, T=30min

Determine the taylor constant and tool life exponent.

RRB JE ME (CBT II) Mock Test- 1 - Question 93

Choose the correct sequence of tool signature according to American standards Association(ASA)

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 93 According to ASA tool signature the correct sequence is,

Back rake angle- side rake angle - end relief relief angle-side relief angle- end cutting edge angle-side cutting edge angle - Nose radius

RRB JE ME (CBT II) Mock Test- 1 - Question 94

Choose the option which is not true for Taper allowance in casting

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 94

Taper allowance/draft allowance is used to provide easy removal of the pattern without damaging mould. The average value of the taper allowance is . The internal surface requires more taper when compared to the A largeexternal surface because for the external surface mould surface is more compared to internal surface.

RRB JE ME (CBT II) Mock Test- 1 - Question 95

In completely constrained motion occurs when

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 95 In completely constrained motion occurs when the motion between the elements of a pair is possible in more than one direction and depends on the direction of force applied.
RRB JE ME (CBT II) Mock Test- 1 - Question 96

Which one of the following is a part of moulding a flask in sand casting?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 96 Drag is the button part of the moulding flask. Moulding flask is used to hold the sand mould intact.
RRB JE ME (CBT II) Mock Test- 1 - Question 97

Module is the ratio of

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 97 Module is defined as the ratio of pitch circle diameter in (mm) to number to teeth.
RRB JE ME (CBT II) Mock Test- 1 - Question 98

Choose the option from the following which shows a correct pair of higher pairs.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 98 A pair with point or line contact between the links is the higher pair. Example:- Wheel rolling on a surface and cam and follower pair.
RRB JE ME (CBT II) Mock Test- 1 - Question 99

Choose the option(s) about the force(s) on which transmission shafts are subjected to;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 99 Transmission shafts are subjected to axial tensile force, bending moment or torsional moment or their combinations.
RRB JE ME (CBT II) Mock Test- 1 - Question 100

Friction clutches can be used to the material that have;

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 100 Friction clutches can be used to the material that have high and uniform coefficient of friction, high heat conductivity and high resistance to wear and scoring.
RRB JE ME (CBT II) Mock Test- 1 - Question 101

A man is climbing up a ladder which is resting against a vertical wall. When he was exactly half way up, the ladder started slipping. The path traced by the man is :

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 101

P is the midpoint of the lagger.

BP = AP = L/2, OC = CB = x

When x = 0, then y = L/2

(Point P lie on OA)

When y = 0, then x = L/2

This condition satisfies the circle equation,

(x)2 + (y)2 = (L/2)2

So, the path traced by point is circular.

RRB JE ME (CBT II) Mock Test- 1 - Question 102

A ball is thrown upwards and it returns to the ground describing a parabolic path. Which of the following remains constant?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 102

Vertically, it has constant acceleration due to gravity.

Horizontally, it has constant velocity

RRB JE ME (CBT II) Mock Test- 1 - Question 103

Which one of the following mechanisms represents an inversion of the single slider crank chain?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 103 Inversion of single slider crank chain are

(i) Engine/compressor

(ii) Whitworth Quick Return Mech/ Rotary cylinder engine

(iii) Slotted lever type/oscillating cylinder type

(iv) Hand pump mechanism

RRB JE ME (CBT II) Mock Test- 1 - Question 104

Which mechanism produces intermittent rotary motion from continuous rotary motion?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 104 Geneva mechanism produces intermittent rotary motion from continuous rotary motion.
RRB JE ME (CBT II) Mock Test- 1 - Question 105

In circular arc cam with a flat faced reciprocating follower, the contact between the follower and the nose of the cam is only maintained if :

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 105 When the cam contact force goes to zero, the cam and follower will separate. Large enough spring force is necessary to keep cam and follower in contact throughout the entire rotation. External spring force should be greater than the inertia force of the follower to maintain positive contact. If external spring force is too large, there is a possibility of higher contact stress leading to surface failure.
RRB JE ME (CBT II) Mock Test- 1 - Question 106

A gear of 28 cm pitch circle diameter has 40 teeth.

The circular pitch will nearly be

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 106

Pc = ?D/T = ? x 280/40

= 7? = 21.99 mm/tooth

= 22 mm/tooth

RRB JE ME (CBT II) Mock Test- 1 - Question 107

The device used to measure the fluid pressure is _____________

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 107 Manometer is the most preferred measuring device as the pressure is measured by the difference in the column heights of the manometer. It is expressed in terms of inches or centimeters of fluid, making it easier for the conversion process.
RRB JE ME (CBT II) Mock Test- 1 - Question 108

The flywheel of a machine having the weight of 4500 N and a radius of gyration of 2 m has a cyclic fluctuation of speed from 125 r.p.m. to 120 r.p.m. Assuming g = 10 m/s², the maximum fluctuation of energy is

RRB JE ME (CBT II) Mock Test- 1 - Question 109

While calculating the natural frequency of a spring-mass system, the effect of the mass of the spring is accounted for by adding X times its value of the mass, where X is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 109

So, x = 1/3

RRB JE ME (CBT II) Mock Test- 1 - Question 110

A governor is said to be isochronous when the equilibrium speed is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 110 Isochronous governor is a governor that keeps the speed of a prime mover constant at all loads. Also known as a static governor. A governor is said to be isochronous if equilibrium speed is constant for all the radii of rotation in the working range. Therefore, for an isochronous governor the speed range is zero and this type of governor shall maintain constant speed.
RRB JE ME (CBT II) Mock Test- 1 - Question 111

What type of liquids are measured using a manometer?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 111 Measurement of liquid in a manometer takes place through differential pressures by balancing the weight. Thus, it is easier for the manometer to measure liquids of lesser density than the heavier ones. Example of a light liquid is Water.
RRB JE ME (CBT II) Mock Test- 1 - Question 112

A fillet weld is loaded parallel to its length l by a load P. If the weld leg is h, the average shear stress on the throat area is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 112

RRB JE ME (CBT II) Mock Test- 1 - Question 113

A solid shaft is designed to transmit 100 kW while rotating at N r.p.m. If the diameter of the shaft is doubled and is allowed to operate at 2 N r.p.m., the power that can be transmitted by the latter shaft is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 113

Pmax =

RRB JE ME (CBT II) Mock Test- 1 - Question 114

The bearing modulus for a bearing is 1628. What is the bearing characteristic number considered for bearing design?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 114

Bearing characteristic number

= 3 × (bearing modulus)

= 4884

RRB JE ME (CBT II) Mock Test- 1 - Question 115

The effect of increasing the stiffness of springs of centrifugal clutch is

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 115 When the load is released from the clutch lever, it again engages with the shaft. As the stiffness of spring increases, the restoring force on the clutch will increase and hence velocity of engagement will be more.
RRB JE ME (CBT II) Mock Test- 1 - Question 116

Which one of the following is not a statically indeterminate structure?

RRB JE ME (CBT II) Mock Test- 1 - Question 117

If a piece of material neither expands or contracts in volume when subjected to stress, then the Poisson’s ratio must be

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 117 Poisson’s Ratio is the ratio of lateral strain to the longitudinal strain. It is denoted by μ. When volume change on loading is zero, the value of μ is 0.5.

RRB JE ME (CBT II) Mock Test- 1 - Question 118

A simply supported beam is subjected to a distributed as shown in the diagram given below :

The maximum shear force in the beam is

RRB JE ME (CBT II) Mock Test- 1 - Question 119

For a rectangular section beam, if the beam depth is doubled, keeping the width, length and loading same, the bending stress is decreased by a factor

RRB JE ME (CBT II) Mock Test- 1 - Question 120

Slenderness ratio of a column is defined as the ratio of its length to its

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 120

Since buckling of column under the crippling load will take place about the axis of least resistance (i.e. about the axis about which moment of inertia is least)

Hence slenderness ratio = length/least radius of gyration

RRB JE ME (CBT II) Mock Test- 1 - Question 121

Edge dislocation is a :

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 121 Vacancy is point imperfections.

Edge and screw dislocation are line imperfections.

RRB JE ME (CBT II) Mock Test- 1 - Question 122

Very small quantity of carbon in iron as in steels forms interstitial solid solution mainly because atomic size(s) of

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 122 Very small quantity of carbon in iron as in steels forms an interstitial solid solution mainly because the atomic size(s) of carbon is very much smaller than that of iron.
RRB JE ME (CBT II) Mock Test- 1 - Question 123

Materials which show direction dependent properties are called

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 123 Materials which show direction dependent properties are called Anisotropic.

Homogenous material is one if it has the same composition throughout the body.

Isotropic material is one in which properties are independent of direction.

Viscoelastic material has a time dependent stress-strain curve.

RRB JE ME (CBT II) Mock Test- 1 - Question 124

ABS plastic is :

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 124 ABS is a terpolymer made by polymerizing styrene and acrylonitrile in the presence of polybutadiene.
RRB JE ME (CBT II) Mock Test- 1 - Question 125

The process of making hollow castings of non circular shape and desired thickness by permanent mould without the use of cores is known as

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 125 In centrifugal casting, the molten metal is poured into the die and rotated with high angular velocity. Due to centrifugal force, the metal takes the shape of die. Axis symmetric mould can be formed by centrifugal casting.
RRB JE ME (CBT II) Mock Test- 1 - Question 126

The methods of casting for producing ornamental pieces are

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 126 In slush casting, liquid metal is poured into the die and without it being completely solidified is inverted to remove extra liquid material.

Application : Jewellery, Ornamental objects, statues.

RRB JE ME (CBT II) Mock Test- 1 - Question 127

Which among these devices are the best suited for the measurement of high pressure liquids with high accuracy?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 127 Manganin wire is the most suitable measurement device for high pressure liquids. It has high stability and durability on a long term basis. It also has a high hydrostatic pressure sensitivity and low strain sensitivity.
RRB JE ME (CBT II) Mock Test- 1 - Question 128

In the forging process :

1. The metal structure is refined

2. Original unidirectional fibers are distorted

3. Poor reliability, as flaws are always there due to intense working

4. Part is shaped by plastic deformation of the material

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 128 Statement (3) is not true, the forging process has better reliability.

Due to intense hammering, flaws are minimized.

RRB JE ME (CBT II) Mock Test- 1 - Question 129

How do we measure the flow rate of liquid?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 129 Coriolis concept of measurement of fluid takes place through the rotation with the reference frame. It is an application of Newton's Law. The device continuously records, regulates and feeds large volumes of bulk materials.
RRB JE ME (CBT II) Mock Test- 1 - Question 130

Extrusion process can effectively reduce the cost of product through

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 130 In the extrusion process, static force is applied and material flows into the desired shape due to this force. Hence tooling cost is saved.
RRB JE ME (CBT II) Mock Test- 1 - Question 131

Which of the following are correct for an indirect hot extrusion process?

1. Billet remains stationary

2. There is no friction force between billet and container walls

3. The force required on the punch is more in comparison to direct extrusion

4. Extruded parts have to be provided a support

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 131 The advantage of indirect extrusion is

1. 25-30% reduction in maximum load relative to direct extrusion.

2. Extrusion pressure is not a function of billet length.

3. No friction between billet and container.

4. Tool has a higher service life.

RRB JE ME (CBT II) Mock Test- 1 - Question 132

What is the instrument used for the automatic control scheme during the fluid flow?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 132 Pilot static tube is a system that uses an automatic control scheme to detect pressure. It has several holes connected to one side of the device. These outside holes are called a pressure transducer, which controls the automatic scheme during fluid flow.
RRB JE ME (CBT II) Mock Test- 1 - Question 133

Define Viscosity?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 133 Viscosity is developed due to the relative motion between two surfaces of fluids at different velocities. It happens due to the shear stress developed on the surface of the fluid.
RRB JE ME (CBT II) Mock Test- 1 - Question 134

If the fluid is at rest in a container of a narrow mouth at a certain column height and the same fluid is at rest at the same column height in a container having a broad mouth, will the pressure be different at a certain depth from the fluid surface.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 134 As per hydrostatic law, the pressure depends only on the height of the water column and not its shape.
RRB JE ME (CBT II) Mock Test- 1 - Question 135

Which one of the following statements is correct about an oblique cutting?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 135 When the relative velocity of the work and the tool is not perpendicular to the cutting edge, such a machining operation is termed as an oblique machining.
RRB JE ME (CBT II) Mock Test- 1 - Question 136

A milling cutter having 8 teeth is rotating at 150 r.p.m. If the feed per tooth is 0.1 mm, the table speed in mm per minute is

RRB JE ME (CBT II) Mock Test- 1 - Question 137

Pressure intensity or force due to pressure gradient for fluid at rest is considered as which kind of force?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 137 Pressure force is surface force.
RRB JE ME (CBT II) Mock Test- 1 - Question 138

Tool life increases with an increase in

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 138 With the increase of nose radius, the tool’s strength is increased and hence tool life increases.
RRB JE ME (CBT II) Mock Test- 1 - Question 139

Clearance in a fit is the difference between

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 139 A difference between minimum hole size and max. Shaft size is called clearance. A difference between min. shaft size and max. hole size is called interference.
RRB JE ME (CBT II) Mock Test- 1 - Question 140

Which one of the following properties of work materials is responsible for the material removal rate in electrochemical machining?

RRB JE ME (CBT II) Mock Test- 1 - Question 141

Calculate the hydrostatic pressure for water moving with constant velocity at a depth of 5 m from the surface.

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 141 If fluid is moving with uniform velocity we treat it analytically same as if fluid is at rest

p= ρgh.

RRB JE ME (CBT II) Mock Test- 1 - Question 142

In the inverted U-tube Differential manometer, how is the specific gravity of manometric fluid used relative to the fluid flowing in the pipes

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 142 In the inverted U-tube Differential manometer, specific gravity of manometric fluid used is less than relative to the fluid flowing in the pipes as the manometric fluid is at the top.
RRB JE ME (CBT II) Mock Test- 1 - Question 143

An unbounded solution of linear programming problem is reflected in the simplex method, when

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 143 Unbounded Solution : If the feasible region is not bounded, it is possible that the value of the objective function goes on increasing without leaving the feasible region. This is known as an unbounded solution.

RRB JE ME (CBT II) Mock Test- 1 - Question 144

In PERT, the distribution of activities times is assumed to be

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 144 In PERT, Activity time follows β-distribution.
RRB JE ME (CBT II) Mock Test- 1 - Question 145

Why is a large reservoir used in a single column manometer?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 145 Single column manometer directly gives the pressure by measuring the height in the other limb and due to the large cross sectional area of the reservoir, for any variation in pressure, the change can be neglected.
RRB JE ME (CBT II) Mock Test- 1 - Question 146

The distance moved by liquid will be more in which type of manometer?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 146 The distance moved by liquid will be more in the Inclined Single column manometer due to its inclination.
RRB JE ME (CBT II) Mock Test- 1 - Question 147

Which device is popularly used for measuring the difference of low pressure?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 147 Inverted U-tube Differential Manometer has lighter manometric fluid, Hence it is used for measuring the low pressure difference.
RRB JE ME (CBT II) Mock Test- 1 - Question 148

Pressure variation for compressible fluid is maximum for which kind of process?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 148 Due to constant temperature, pressure variation for compressible fluid is maximum for isothermal processes.
RRB JE ME (CBT II) Mock Test- 1 - Question 149

Why can’t the density be assumed as constant for compressible fluids?

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 149 Volume and hence density changes with change in temperature and pressure.
RRB JE ME (CBT II) Mock Test- 1 - Question 150

The gas in a cooling chamber of a closed-cycle gas turbine is cooled at

Detailed Solution for RRB JE ME (CBT II) Mock Test- 1 - Question 150 In closed-cycle gas turbine the cooling process occurs at constant pressure.

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