Mock Test: SSC JE (ME)- 15

# Mock Test: SSC JE (ME)- 15

Test Description

## 100 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Mock Test: SSC JE (ME)- 15

Mock Test: SSC JE (ME)- 15 for Mechanical Engineering 2023 is part of Mechanical Engineering SSC JE (Technical) preparation. The Mock Test: SSC JE (ME)- 15 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Mock Test: SSC JE (ME)- 15 MCQs are made for Mechanical Engineering 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Mock Test: SSC JE (ME)- 15 below.
Solutions of Mock Test: SSC JE (ME)- 15 questions in English are available as part of our Mechanical Engineering SSC JE (Technical) for Mechanical Engineering & Mock Test: SSC JE (ME)- 15 solutions in Hindi for Mechanical Engineering SSC JE (Technical) course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Mock Test: SSC JE (ME)- 15 | 100 questions in 100 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Mechanical Engineering SSC JE (Technical) for Mechanical Engineering Exam | Download free PDF with solutions
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Mock Test: SSC JE (ME)- 15 - Question 1

### For a single phase capacitor start induction motor which of the following is valid ?

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 1

Mock Test: SSC JE (ME)- 15 - Question 2

### To avoid arcing, connect suitable value of in earthing

Mock Test: SSC JE (ME)- 15 - Question 3

### What is the value of the current I in the circuit shown below ?

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 3

Mock Test: SSC JE (ME)- 15 - Question 4

In the following type of conductors the corona is minimum in

Mock Test: SSC JE (ME)- 15 - Question 5

Consider the following w.r.t. the circuit as shown below

1. VR 100√ 2V=
2. | I |rms = 2A
3. L = 0.25H
Which of the above statements is/are correct?

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 5

Mock Test: SSC JE (ME)- 15 - Question 6

If the time delay of relay with TMS setting 0.1 is 10 second then what is the time delay whenthe TMS setting is changed to 0.5

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 6

Mock Test: SSC JE (ME)- 15 - Question 7

The machine used in wind will is

Mock Test: SSC JE (ME)- 15 - Question 8

In an RLC series resonant circuit, if the maximum stored energy is increased by 10%and at the same time, the energy dissipated per cycle is reduced by 10%, it will result in whichone of the following ?

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 8

Mock Test: SSC JE (ME)- 15 - Question 9

Consider the following components Out of these components, which component(s)can be common for primary & back up protection

Mock Test: SSC JE (ME)- 15 - Question 10

In a series resonance circuit, at resonance selectivity Q is equal to

Mock Test: SSC JE (ME)- 15 - Question 11

Positive sequence terminal voltage is zero in

Mock Test: SSC JE (ME)- 15 - Question 12

.Most economical load in the underground cable is

Mock Test: SSC JE (ME)- 15 - Question 13

The friction experienced by a body, when in motion, is known as

Mock Test: SSC JE (ME)- 15 - Question 14

certain network consist of a large number of ideal linear resistances, one of which is
designated consumed by R is P1 when only the first source is active, and P2 when only the
second source is active, if both source are active simultaneously, then the power consumed by R
is

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 14

Mock Test: SSC JE (ME)- 15 - Question 15

Consider the following statement about D'Arsonval Movement
1. It is best suited for d.c. current measurement
2. It responds to the average value of current
3. It could be used for power measurements Which of these statements is/are correct

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 15

Mock Test: SSC JE (ME)- 15 - Question 16

Torque/weight ratio of an instrument indicates

Mock Test: SSC JE (ME)- 15 - Question 17

A current transformer has a phase error of +3º. The phase angle between the primary andsecondary current is

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 17

Mock Test: SSC JE (ME)- 15 - Question 18

The direction of rotation of a d.c. series motorcan be reversed

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 18

Mock Test: SSC JE (ME)- 15 - Question 19

A three phase transformer having zero sequence impedance of Zo has the zero-sequencenetwork as shown in the figure below. The connection of its windings are

Mock Test: SSC JE (ME)- 15 - Question 20

The transformer laminations are insulated from each other by

Mock Test: SSC JE (ME)- 15 - Question 21

A coil with certain number of turns has a specified time constant. If the no. of turns isdoubled, its time constant would

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 21

Mock Test: SSC JE (ME)- 15 - Question 22

The technique of adding a precise amount of time between the trigger point and the beginningof the scope-sweep in a CRO is known as

Mock Test: SSC JE (ME)- 15 - Question 23

In a CE (common emitter) transistor, VCC = 12V and the zero signal collector current is 1mA. Determine the operating point when collector load (RC) is 6 KW

Mock Test: SSC JE (ME)- 15 - Question 24

A 100 H.P. motor with a synchronous speed of 720 rpm at 50 Hz has 96 stator slots with4 conductors per slot and 120 rotor slots with 2 conductors per slot. If the full load efficiencyis 0.92 and the p.f. is 0.9 lagging, the current per phase when the stator is star connected to3-phase, 500V supply will be

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 24

Mock Test: SSC JE (ME)- 15 - Question 25

Which of the following application requires high starting torque ?

Mock Test: SSC JE (ME)- 15 - Question 26

Which DC motor will be preferred for machine tools ?

Mock Test: SSC JE (ME)- 15 - Question 27

The empty space between the plates of a capacitor is filled with liquid of dielectricconstant K the capacitance of capacitor

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 27

Mock Test: SSC JE (ME)- 15 - Question 28

If current through the operating coil of a moving iron instrument is doubled, the operating forcebecomes

Mock Test: SSC JE (ME)- 15 - Question 29

A magnetic needle is kept in a uniform magnetic field. It experiences

Mock Test: SSC JE (ME)- 15 - Question 30

Disadvantage of low p.f. is

Mock Test: SSC JE (ME)- 15 - Question 31

For improvement of power factor

Mock Test: SSC JE (ME)- 15 - Question 32

A 4-pole 500V shunt motor has 720 wave connected conductors on its armature. The fullload armature current is 60A and flux per pole is 0.03 Wb. The armature resistance is 0.2Wand the contact drop per brush is 1V. What is the back emf ?

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 32

Mock Test: SSC JE (ME)- 15 - Question 33

In an autotransformer of voltage ratio    the fraction of power transferred
inductively is proportional to

Mock Test: SSC JE (ME)- 15 - Question 34

Stepped core is used in transformers in order to reduce

Mock Test: SSC JE (ME)- 15 - Question 35

A make break switch is provided to disconnect the battery when the meter is not in use is

Mock Test: SSC JE (ME)- 15 - Question 36

Which instrument is the cheapest, disregarding the accuracy

Mock Test: SSC JE (ME)- 15 - Question 37

In dc machines, the armature reaction mmf is

Mock Test: SSC JE (ME)- 15 - Question 38

Inductance affects the flow of direct current at the time of

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 38

Mock Test: SSC JE (ME)- 15 - Question 39

A centre zero ohmmeter connected in the rotor circuit of 6-pole 50 Hz induction motor makes30 oscillations in one minutes. The rotor speed is

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 39

Mock Test: SSC JE (ME)- 15 - Question 40

A coil of resistance 20W and inductance 0.8 H is connected to a 200V DC supply. The rate
of change of current at t = 0+ is

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Mock Test: SSC JE (ME)- 15 - Question 41

What should be the value of resistance R, in the above circuit if it has to absorb the maximum
power from the source

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 41

Mock Test: SSC JE (ME)- 15 - Question 42

The torque on the rotor of a 3- W motor is more constant than that of a single phase motorbecause

Mock Test: SSC JE (ME)- 15 - Question 43

When the secondary coil of a transformer is short circuited, the primary inductance

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 43

Mock Test: SSC JE (ME)- 15 - Question 44

Q-factor of a parallel tuned circuit can be increased by

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 44

Mock Test: SSC JE (ME)- 15 - Question 45

Air blast circuit breakers for 400 KV power system are designed to operate in

Mock Test: SSC JE (ME)- 15 - Question 46

An overhead line conductor has an inductance per unit length of L Henry. If the entire medium
around the conductor is filled with a dielectric material of permittivity (E), then the inductance
will be

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 46

Mock Test: SSC JE (ME)- 15 - Question 47

In two-wattmeter method of power measurement one of the wattmeter will shownegative reading when the load pf angle is strictly

Mock Test: SSC JE (ME)- 15 - Question 48

A reactance relay is

Mock Test: SSC JE (ME)- 15 - Question 49

To limit current chopping in vacuum circuit breakers, the contact

Mock Test: SSC JE (ME)- 15 - Question 50

The main difference between speed-time curves of mainline service as compared to suburbanservices in

Mock Test: SSC JE (ME)- 15 - Question 51

Which of the following relay has directional feature

Mock Test: SSC JE (ME)- 15 - Question 52

Carbon brushes are preferable to copper brushes because

Mock Test: SSC JE (ME)- 15 - Question 53

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 Mock Test: SSC JE (ME)- 15 - Question 53

Mock Test: SSC JE (ME)- 15 - Question 54

The starting torque of a servomotor under unbalanced operation is proportional to

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 54

Mock Test: SSC JE (ME)- 15 - Question 55

Quadrilateral speed-time curve is the closer approximation for

Mock Test: SSC JE (ME)- 15 - Question 56

Travelling crane is used for lifting and moving heavy loads. It uses

Mock Test: SSC JE (ME)- 15 - Question 57

For Domestic wiring method commonly used is

Mock Test: SSC JE (ME)- 15 - Question 58

The time taken for a surge to travel a 600 km long overhead transmission link is

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 58

Mock Test: SSC JE (ME)- 15 - Question 59

Ripple factor of half wave rectifier is

Mock Test: SSC JE (ME)- 15 - Question 60

Which one is unipolar transistor

Mock Test: SSC JE (ME)- 15 - Question 61

A polarized electrolytic capacitor can be used

Mock Test: SSC JE (ME)- 15 - Question 62

A moving coil instrument gives full scale deflection with a current of 100 mA when thepotential difference across its terminals is 50 mV. Calculate the shunt resistance to enablethe instrument to read upto 100 A

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 62

Mock Test: SSC JE (ME)- 15 - Question 63

Which of the following motors are used in tape recorders

Mock Test: SSC JE (ME)- 15 - Question 64

Which motor would you select for vacuum cleaner

Mock Test: SSC JE (ME)- 15 - Question 65

A tank circuit consist of

Mock Test: SSC JE (ME)- 15 - Question 66

The commulator in a dc machine acts as

Mock Test: SSC JE (ME)- 15 - Question 67

Ferranti effect on transmission line is a phenomenon which represents

Mock Test: SSC JE (ME)- 15 - Question 68

EHV cables are filled with thin oil under pressure

Mock Test: SSC JE (ME)- 15 - Question 69

Arcing on transmission lines is prevented by connecting a suitable

Mock Test: SSC JE (ME)- 15 - Question 70

In half wave rectifier, if an a.c. supply is 60 Hz, then what is the a.c. ripple at output ?

Mock Test: SSC JE (ME)- 15 - Question 71

A power supply has full load voltage of 24V. What is the no load voltage for 5% regulation?

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 71

Mock Test: SSC JE (ME)- 15 - Question 72

For an existing ac transmission line, the string efficiency is 80%. If dc voltage is supplied forthe same set up, the string efficiency will be

Mock Test: SSC JE (ME)- 15 - Question 73

When excitation is altered in an alternator connected to an infinite line, it provides acorresponding change in

Mock Test: SSC JE (ME)- 15 - Question 74

Lightening surges are arrested by

Mock Test: SSC JE (ME)- 15 - Question 75

The rms value of a half wave rectified currentis 10A. Its value for full wave rectification would be

Mock Test: SSC JE (ME)- 15 - Question 76

176. For the wave given below, the rms value will be

Mock Test: SSC JE (ME)- 15 - Question 77

177.The equation for 25 cycles current sine wave having rms value of 30 amperes will be

Mock Test: SSC JE (ME)- 15 - Question 78

A 220 V series motor takes a current 35 amp and runs at 500 rpm. Armature resistance =0.25W and series field resistance = 0.3W. If iron and friction losses amount to 600W. Whatis the armature torque

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 78

Mock Test: SSC JE (ME)- 15 - Question 79

Illumination level required for precision work is around

Mock Test: SSC JE (ME)- 15 - Question 80

Lumen/watt is the unit of

Mock Test: SSC JE (ME)- 15 - Question 81

A DC generator used for ac welding should have

Mock Test: SSC JE (ME)- 15 - Question 82

The load taken by welding transformer is

Mock Test: SSC JE (ME)- 15 - Question 83

In rectifier circuit shown above, what should be minimum peak-inverse voltage (PIV) ratingof the diode

Detailed Solution for Mock Test: SSC JE (ME)- 15 - Question 83

Mock Test: SSC JE (ME)- 15 - Question 84

In an open circuited p-n junction diode space charge density at the junction is

Mock Test: SSC JE (ME)- 15 - Question 85

In an HVDC system

Mock Test: SSC JE (ME)- 15 - Question 86

In order to have lower cost of power generation

Mock Test: SSC JE (ME)- 15 - Question 87

Mho relay is usually employed for the protection of

Mock Test: SSC JE (ME)- 15 - Question 88

The making and breaking currents of 3- f ac circuit breakers in power system arerespectively in what form

Mock Test: SSC JE (ME)- 15 - Question 89

For a fault in power system, the term critical clearing time is related to

Mock Test: SSC JE (ME)- 15 - Question 90