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Mechanical Engineering Exam  >  Mechanical Engineering Test  >  BDL MT Mechanical Mock Test Series 2026  >  BDL MT Mechanical Mock Test - 5 - Mechanical Engineering MCQ

Mechanical Engineering BDL MT Mock Test - 5 Free Online Test 2026


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30 Questions MCQ Test BDL MT Mechanical Mock Test Series 2026 - BDL MT Mechanical Mock Test - 5

BDL MT Mechanical Mock Test - 5 for Mechanical Engineering 2026 is part of BDL MT Mechanical Mock Test Series 2026 preparation. The BDL MT Mechanical Mock Test - 5 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The BDL MT Mechanical Mock Test - 5 MCQs are made for Mechanical Engineering 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for BDL MT Mechanical Mock Test - 5 below.
Solutions of BDL MT Mechanical Mock Test - 5 questions in English are available as part of our BDL MT Mechanical Mock Test Series 2026 for Mechanical Engineering & BDL MT Mechanical Mock Test - 5 solutions in Hindi for BDL MT Mechanical Mock Test Series 2026 course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt BDL MT Mechanical Mock Test - 5 | 150 questions in 120 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study BDL MT Mechanical Mock Test Series 2026 for Mechanical Engineering Exam | Download free PDF with solutions
BDL MT Mechanical Mock Test - 5 - Question 1
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A power plant has a maximum demand of 15 MW. The load factor is 50% and the plantfactor is 40%. The operating reserve is

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 1

BDL MT Mechanical Mock Test - 5 - Question 2
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Kinematic viscosity of water in comparison to mercury is _____.

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 2
The dynamic viscosity of mercury (1.52 cp) is greater than water (0.894 cp). The kinematic viscosity is the dynamic viscosity divided by the density. Mercury is a lot denser than water, so its kinematic viscosity is lower than the kinematic viscosity of water.
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BDL MT Mechanical Mock Test - 5 - Question 3
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A blunt tool is used in

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 3

Rammer's Super Blunt tool is designed to deliver the maximum force of a hammer's impact energy directly into boulders. The Super Blunt is only designed to be used in boulder breaking applications, where it provides 1.5...3 times more wear life than a standard blunt tool.

BDL MT Mechanical Mock Test - 5 - Question 4
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The largest diameter of an external or internal screw thread is known as

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 4

The largest diameter of the thread of the screw or nut. The term “major diameter” replaces the term “outside diameter” as applied to the thread of a screw and also the term “full diameter” as applied to the thread of a nut. Minor Diameter: The smallest diameter of the thread of the screw or nut.

BDL MT Mechanical Mock Test - 5 - Question 5
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Petrol and diesel engines of the automobile are

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 5
Petrol and Diesel engines used in automobiles are Internal-Combustion engines (IC).

If we see the working of any IC engine that is used in automobiles, then there is a piston which, under the action of pressure of the gases, moves up-down (reciprocating) within the cylinder, thus rotating the crankshaft, which creates the rotary motion to drive the automobile. Thus, because of the reciprocation of the piston, these are known as Reciprocating engines.

Considering other the options:-

Rotary engines are used in Aircraft, not in automobiles.

External Combustion engines are obsolete now, and these were used in Steam engines.

Petrol and Diesel engines work on Otto and Diesel cycles, respectively, not Carnot cycles.

BDL MT Mechanical Mock Test - 5 - Question 6
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The temperature stress is a function of

1. Coefficient of thermal expansion

2. Temperature change

3. Modulus of elasticity

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 6

Thermal strain ϵT is proportional to the temperature change ΔT

ϵT = αrmΔT

α is the coefficient of thermal expansion.

When there is some restriction to the bar to expand, thermal stress will generate in the material:

σT = strain × E = α.rmΔT.E

BDL MT Mechanical Mock Test - 5 - Question 7
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In a plate clutch, the axial force is 4 kN. The inside radius of the contact surface is 50 mm, and the outside radius is 100 mm. For uniform pressure, the mean radius of the friction surface will be

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 7
For Uniform pressure theory

For Uniform wear theory, the mean radius of friction surface is given as

BDL MT Mechanical Mock Test - 5 - Question 8
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 The direction of rotation of a d.c. series motorcan be reversed

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BDL MT Mechanical Mock Test - 5 - Question 9
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The ratio between Oxygen and Acetylene gases for neutral flame in gas welding is

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 9

The neutral flame has a one-to-one ratio of acetylene and oxygen. It obtains additional oxygen from the air and provides complete combustion. It is generally preferred for welding. The neutral flame has a clear, well-defined, or luminous cone indicating that combustion is complete

BDL MT Mechanical Mock Test - 5 - Question 10
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Function of governor is to:

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 10

The function of a governor is to maintain the speed of the engine within specified limits whenever there is a variation of load.

The speed of an engine varies in two ways

1. During each revolution or cyclic variation

2. Over a number of revolutions.

During each revolution or cyclic variation, the speed of the engine varies due to variation in output torque of the engine during a cycle. It is regulated by a flywheel mounted on the shaft.

Over a number of revolutions, the speed of the engine varies due to variation in load upon the engine, and the speed is maintained by mounting a governor.

BDL MT Mechanical Mock Test - 5 - Question 11
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Rack and pinion arrangement is used for:

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 11

Rack and pinion gears are used to convert rotation into linear motion. The ‘pinion’ is the normal round gear,, and the ‘rack’ is straight or flat.

A perfect example of this is the steering system on many cars.

BDL MT Mechanical Mock Test - 5 - Question 12
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A moving fluid mass may be brought to a static equilibrium position by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 12
Newton's second law:

F = ma

F + (-ma) = 0

We can say that the body is in equilibrium under the action of external forces (F) and inertial force (-ma).

This is D’Alembert’s principle which states that a moving body can be brought to equilibrium by adding inertia force Fi to the system.

In magnitude, this inertia force is equal to the product of mass and acceleration and takes place in a direction opposite to that of acceleration.

BDL MT Mechanical Mock Test - 5 - Question 13
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The force of friction on a body kept on the top of the table, not depend on

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 13

Law of limiting friction for dry surfaces:

  • When two bodies are in contact, the direction of the force of friction on one of them is opposite to the direction in which this body tends to move.
  • The frictional force is independent of the area of contact of the surfaces
  • When one body is just on the point of sliding over the other body, the maximum force of friction is being exerted; This is called the limiting friction
  • The force of friction is dependent upon the types of materials of the two bodies in contact
  • The limiting frictional force is proportional to the normal force that acts between the bodies in contact
  • The ratio of frictional force to the normal reaction is constant and is known as the coefficient of friction, i.e., μ = F/N
  • Limiting static friction is somewhat greater than the kinetic friction
  • The kinetic friction is independent of the relative velocity of the bodies in contact
BDL MT Mechanical Mock Test - 5 - Question 14
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If the principal stresses on a plane stress problem are S1 = 100 MPa and S2 = 40 MPa, then the magnitude of maximum shear stress (MPa) will be:

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 14
In the case of the basic equations for calculating flow rate calculation plane stress problem, Shear stress is

BDL MT Mechanical Mock Test - 5 - Question 15
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In a Die-cutting operation, punching several holes in a sheet is called

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 15
Shearing is a cutting operation used to remove a blank of required dimensions from a large sheet. The shearing operations which make use of a die include punching, blanking, piercing, notching, trimming, and nibbling.

Punching/Blanking: Punching or blanking is a process in which the punch removes a portion of material from the larger piece or a strip of sheet metal. If the small removed piece is discarded, the operation is called punching, whereas if the small removed piece is the useful part and the rest is scrap, the operation is called blanking.

Piercing: It is a process by which a hole is cut (or torn) in metal. It is different from punching in that piercing does not generate a slug.

Perforating: It is an operation in which a number of uniformly spaced holes are punched in a sheet of metal. The holes may be of any size or shape. They usually cover the entire sheet of metal.

Nothing: It is an operation in which a specified small amount of metal is cut from the edges.

Lancing: It is an operation of cutting a sheet metal through a small length and then bending this cut portion.

BDL MT Mechanical Mock Test - 5 - Question 16
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A cantilever beam of the square section is subjected to a load W at the free end. If the length of the beam is doubled and load reduced to half, the deflection at the free and 95 compared to the original deflection would be —

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 16
A cantilever beam with a square cross-section of 6 mm side is subjected to a load of 2 kN normal to the top surface, as shown in the figure. Young's modulus of elasticity of the material of the beam is 210 GPa. The magnitude of slope ( in radian) at Q (20 mm from the fixed end)
BDL MT Mechanical Mock Test - 5 - Question 17
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In order that a cycle be reversible, the following must be satisfied

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 17
If a process can proceed in either direction without violating the second law of thermodynamics, it is a reversible process.

A reversible process is carried out infinitely slowly with an infinitesimal gradient so that every state passed through by the system is an equilibrium state. So, a reversible process is a quasi-static process that can proceed in either direction.

Any natural process carried out with a finite gradient is an irreversible process. A reversible process that consists of a succession of equilibrium states is an idealized hypothetical process approached only as a limit. All spontaneous processes are irreversible.

Irreversible Processes

The examples of irreversible processes are Motion with friction, free expansion, Expansion/ compression with finite pressure difference, Energy transfer as heat with finite temperature difference, mixing of matter at different states, Mixing of non-identical gases.

Reversible Processes

The processes which can be idealized as reversible are Motion without friction, Expansion/ compression with infinitesimal pressure difference, Energy transfer as heat with infinitesimal temperature difference.

BDL MT Mechanical Mock Test - 5 - Question 18
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In each of the following questions below, the figures follow a series sequence. One and only one of the five figures does not fit in the series sequence. The number of that figure is your answer.

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 18

Hence correct answer is option D

BDL MT Mechanical Mock Test - 5 - Question 19
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Study the following arrangement carefully and answer the questions given below :

7 1 2 8 2 5 2 7 5 6 4 9 1 9 2 4 1 4 6 4 5 3 2 6 3 7 8 5 1 3 1 5 8 2 7

Which of the following is sixth to the left of the twentieth digit from the left end of the above arrangement?

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 19

Required digit = (20th-6th) from the left or

14th from the left = 9

BDL MT Mechanical Mock Test - 5 - Question 20
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Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:

Some bags are trunks.

All trunks are shirts.

Some shirts are books.

All books are shops.

Conclusion:

I some shops are bags

II Some books are bags.

III Some shops are shirts.

IV Some shirts are bags.

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 20

I. some shops are bags - False

II. Some books are bags. - False

III. Some shops are shirts - True

IV. Some shirts are bags. - True

Therefore, Only III and IV follow

Hence, option D is correct

BDL MT Mechanical Mock Test - 5 - Question 21
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In the following figure, the square represents boys, the triangle represents cricketer, the circle represents biker. Which set of letters represents boys who are bikers?

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 21
Out of total 62 boys,

Only boys who are biker:

25 + 9 = 34

Hence option 34 is the correct answer.

BDL MT Mechanical Mock Test - 5 - Question 22
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Which one of the given responses would be a meaningful order of the following?

1. Classification

2. New product

3. Collection

4. Recycle

5. Waste

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 22
Here the pattern will be,

It is a waste recycle process, starting from ‘Waste’ dumped by us, it is ‘Collected.’ After collection of various types of waste will be ‘Classified’ into different categories. Finally, it is ‘Recycled’ and ready to make a ‘new product.’

Hence option 5, 3, 1, 4, 2 is the correct answer.

BDL MT Mechanical Mock Test - 5 - Question 23
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Find the odd number/letters / word from the given alternative:

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 23
Except Tibia, all others are part of the brain.
BDL MT Mechanical Mock Test - 5 - Question 24
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Find out the wrong term: 15, 16, 22, 29, 45, 70

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 24

The correct pattern is + 1, + 4, + 9, + 16, + 25 i.e., + 12 , + 22 , + 32 , + 42 , + 52.

So, 22 is wrong and must be replaced by (16 + 4), i.e., 20.

BDL MT Mechanical Mock Test - 5 - Question 25
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What approximate value should come in the place of the question mark in the following question?

72)2 ÷ ∛46656=?

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 25
? = (72)2 ÷ ∛46656

? = (72)2 ÷ ∛(36x36x36) = (72)2 ÷ 36

? = (72 X 72)/36 = 144

BDL MT Mechanical Mock Test - 5 - Question 26
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An equilateral triangle circumscribes all six circles, each with a radius 1 cm. What is the perimeter of the equilateral triangle?

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 26

E = GH = 4, ∠ADG = 60°

Then from 30 - 60 - 90 theorem

AG = √3, BH = √3, then

AB = AG+GH+BH

Then perimeter of △ABC = 3×(√3+4+√3)=3×(2√3+4)=6(√3+2)

BDL MT Mechanical Mock Test - 5 - Question 27
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For what value of 'k', quadratic equation 4x2 - 3m√2x + k = 0 (where, m>0) has equal roots? (Given: 2m2 + 7m - 60 = 0)

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 27
For 2m2 + 7m - 60 = 0

2m2 - 8m + 15m - 60 = 0

m = -15/2,

Quadratic equation 4x2 - 3m√2x + k = 0 has equal roots, therefore,

D = 0 = (-3m√2)2 - 4 x 4 x k

For m = 4:

18 x (4)2 = 16 x k

k = 18

BDL MT Mechanical Mock Test - 5 - Question 28
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The movie inspired Ronald a lot.

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 28

The sentence is in active voice thus we need to convert the same in passive voice.
In active voice :
Subject+verb+object
In passive voice:
Object+verb+subject

The tense here is simple past thus 'was inspired' is the correct verb to be used here. Option 4 is the correct answer. The other options use incorrect tenses or change the meaning of the sentence.

BDL MT Mechanical Mock Test - 5 - Question 29
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In the following questions, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expresses the same sentence in Passive/Active voice.

Q. The cup was broken by Fred.

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 29

The sentence is in passive voice thus in active voice the subject 'Fred' must be written before the object 'cup.' In active voice :
Subject+verb+object
In passive voice:
Object+verb+subject
The tense here is simple past 'was broken' thus 'broke' is the correct verb to be used here. Option 1 is the correct answer. The other options use incorrect tenses or change the meaning of the sentence.

BDL MT Mechanical Mock Test - 5 - Question 30
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Direction: Read the following passages carefully and answer the question that follows.
Knowledge means knowing the things in an appropriate and better way. A man of knowledge can understand the circumstances more wisely, so can decide the things favorably. Knowledge inspired. confidence and courage to act at a right time. A man of knowledge possesses immense influence in society. He has the capacity to lead the society, mold the society in a positive direction and keeps away the society from the many social evils. A man of knowledge can turn the sleeping people into a thundering force. Whatever the inventions and discoveries are seen today. from needle to the jet planes. are the result of proper use of knowledge. Human being is the only creature who can use his brain wisely, rationally, selectively and can do wonders.

Q. What is the reformative activity of a man of knowledge according to the given passage?

Detailed Solution for BDL MT Mechanical Mock Test - 5 - Question 30

The author considers that a man of knowledge is reformative in his approach. He can tun the sleeping people into a thundering force.

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