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# Technical Test SSC JE: Electrical Engineering (EE)- 8

## 100 Questions MCQ Test Electrical Engineering SSC JE (Technical) | Technical Test SSC JE: Electrical Engineering (EE)- 8

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This mock test of Technical Test SSC JE: Electrical Engineering (EE)- 8 for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam. This contains 100 Multiple Choice Questions for Electrical Engineering (EE) Technical Test SSC JE: Electrical Engineering (EE)- 8 (mcq) to study with solutions a complete question bank. The solved questions answers in this Technical Test SSC JE: Electrical Engineering (EE)- 8 quiz give you a good mix of easy questions and tough questions. Electrical Engineering (EE) students definitely take this Technical Test SSC JE: Electrical Engineering (EE)- 8 exercise for a better result in the exam. You can find other Technical Test SSC JE: Electrical Engineering (EE)- 8 extra questions, long questions & short questions for Electrical Engineering (EE) on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### Swamping resistance is used to compensate

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QUESTION: 4

Unit of deflection sensitivity of a CRO is

Solution:

The units of deflection sensitivity of the CRO is – meter per volt.

CRO stands for Cathode Ray Oscilloscope. It is an electronic device with the CRT as its main component and other associated circuits. The CRO has horizontal and vertical plates in between the electron gun and the screen in order to deflect the beam according to the input signal.

The deflection sensitivity of a CRO is defined as the vertical deflection of the beam on the screen per unit deflecting voltage.

It is also defined as the deflection produced per volt of deflecting voltage. Therefore, the units of deflection sensitivity of the CRO is – meter per volt (m⋅V−1).

QUESTION: 5

Relative permittivity can be measured by

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QUESTION: 6

A three phase 440V, 6 pole, 50Hz squirrel cage induction motor is running at a slip of 5%.The speed of stator magnetic field with respect to rotor magnetic field and speed of rotor w.r.t.stator magnetic field are

Solution:

Ns = (120 × f)/P

= (120 × 50)/6

= 1000 rpm
Rotor speed = Ns – SNs = 950 r.p.m.
Stator magnetic field speed, Ns = 1000 r.p.m.
Rotor magnetic field speed, Ns = 1000 r.p.m.
Relative speed between stator and rotor magnetic fields is zero
Rotor speed with respect to stator magnetic field = 950 – 1000 = – 50 r.p.m.

QUESTION: 7

Oxide film arrester has which of the following properties ?

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QUESTION: 8

What is the name of the fluorescent material that gives red colour fluorescence ?

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QUESTION: 9

The B-H curve for.......will be straight line passing through the origin.

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QUESTION: 10

The essential condition for parallel operation of two D.C. generators is that they have

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QUESTION: 11

Plug setting of a relay can be altered by varying

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QUESTION: 12

If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400:5, then plug settingmultiplier will be

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QUESTION: 13

In a D-connected source feeding a Yconnected load

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QUESTION: 14

Which of the following loads normally needs starting torque more than rated torque ?

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QUESTION: 15

Which of the following transistor configuration circuit is much less temperature dependent ?

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QUESTION: 16

The collector characteristics of a common emitter connected thyristor may be used to findits

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QUESTION: 17

A zener voltage regulator has load requirement of 12V and 2A. The zener diode minimumcurrent requirement is 0.2A. The minimum voltage at input is 24V. What is the seriesresistance with source required ?

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QUESTION: 18

A constant load power means a uniform conversion of

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QUESTION: 19

To tune a parallel resonant circuit to a higher frequency, the capacitance should be

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QUESTION: 20

The effect of inserting a resistance in series with the field winding of a shunt motor is to

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QUESTION: 21

When using ohmmeter, applied voltage is to be disconnected from the circuit because

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QUESTION: 22

For the circuit shown in fig-ure, the voltage across the capacitor during steady statecondition is

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QUESTION: 23

For high accuracy the meter has

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QUESTION: 24

A 10 MHz CRO has

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QUESTION: 25

Semi conductor diode time constant is equal to

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QUESTION: 26

Consider the circuit in the below figure. What is the power delivered by the 24V source ?

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QUESTION: 27

For a given torque, reducing the diverterresistance of a d.c. series motor

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QUESTION: 28

A 20 kVA, 2000/200 V, 1-f transformer has name plate leakage impedance of 8%. Voltagerequired to be applied on the high voltage side to circulate full load current with the low voltagewinding short-circuited will be

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QUESTION: 29

A 100 km long transmission line is loaded at 110 kV. If the loss of line is 15 MW and theload is 150 MVA, the resistance of the line is

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QUESTION: 30

Corona loss increases with

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QUESTION: 31

In case line to line fault occurs, the short circuit current of an alternator will depend on its

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QUESTION: 32

An overhead transmission line has a span of 220 metres the conductor waiting 0.604 kg/m. What will be the maximum sag if the working tension is 2879 kg.

Solution:

(Maximum sag ) S = ωL2 / 8T
Where ,
ω – weight of conductor per meter
L – span
T – Working tension
Therefore, S = (0.604 × 2202) / (8 × 2879) = 1.269 m ~ 1.27 m.

QUESTION: 33

Find RAB for the circuit shown in figure.

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QUESTION: 34

If the voltage V across 10W resistance is 10 V, what is the voltage E of the voltage sourcein the circuit shown below ?

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QUESTION: 35

Integrating principle in the digital measurement is the conversion of

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QUESTION: 36

Delta/star transformer works satisfactorily when

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QUESTION: 37

Negative voltage regulation is indicative that the load is

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QUESTION: 38

Iron loss of a transformer can be measured by

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QUESTION: 39

In the circuit shown below, what is the value of the current I ?

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QUESTION: 40

The transformation ratio of an induction motor can be found by

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QUESTION: 41

The armature reaction of an alternator will be completely magnetizing when load power factoris

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QUESTION: 42

In the network shown below, it is given that V = 1V and dt /dv = – 10 v/s at a time t, wheret is the time after the switch s is closed what is the value of C ?

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QUESTION: 43

The resistance seen from the terminal A and B of the device whose characteristics is shown in
the figure below is

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QUESTION: 44

Regarding skewing of motor bars in a squirrel cage induction motor (SCIM) which statementis false ?

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QUESTION: 45

If the input to the prime mover of an alternator (in a system of three alternators) is kept
constant and the excitation is changed, the

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QUESTION: 46

The coupling angle or load angle of a synchronous motor is defined as the anglebetween the

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QUESTION: 47

Most commonly employed trivalent impurities are

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QUESTION: 48

Ripple factor of a full wave rectifier without filter will be

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QUESTION: 49

Configuration used to connect high impedance source to a low impedance load is

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QUESTION: 50

The minimum value that the characteristic impedance of an air dielectric parallel wire linecan have is

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QUESTION: 51

In an N-type semiconductor, the concentration of minority carriers mainly depends upon

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QUESTION: 52

A current of 5mA flows in a resistanceless choke from a 200V alternating source. Theenergy consumed in the choke is

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QUESTION: 53

The current drawn by a tungsten filament lamp is measured by an ammeter. The ammeter reading under steady state condition will be ____ the ammeter reading when the supply is switched on

Solution:

When a filament lamp is cold(when supply is switched off), it behaves differently than when it’s at its normal operating temperature. The resistance of the filament of the bulb increases with increase in temperature. Hence when it glows its resistances is greater than when it is cold. and in the process the lamp current changes. In the case of a cold incandescent lamp (a filament lamp), the inrush current peaks at approximately ten times the steady-state operating current, but it lasts a relatively short duration, no more than a few cycles.

Therefore the ammeter reading under the steady-state condition is less than then ammeter reading when the supply is switched on.

QUESTION: 54

Two sinusoidal currents are given by the equations , The phase difference be-tween them is degrees.

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QUESTION: 55

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QUESTION: 56

The stability of an arc in vacuum depends upon the

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QUESTION: 57

The combination of HRC fuse and circuit breaker is used, the circuit breaker operatesfor

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QUESTION: 58

A distance relay measures

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QUESTION: 59

In an A.C. circuit, the ratio of KW/KVA represents

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QUESTION: 60

When the supply voltage to an induction motor is reduced by 10%, the maximum torque willdecrease by

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QUESTION: 61

In the figure the inductance of coil 1 is

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QUESTION: 62

In the analysis of transistor circuit we usually use

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QUESTION: 63

Two identical heaters each marked 2000 W, 250 V are placed in series and then connectedto 250 volt supply, their combined rate of heating is

Solution:

∴ P = V2/R ⇒ R = V2/P
∴ Each heater resistance
R = (250)2/2000 = R = 125/4Ω
Since heaters are connected in series so their resistance will be connected in parallel so total resistance
1/RT = 1/R + 1/R = 4/125 + 4/125
⇒ RT = 125/8 Ω

QUESTION: 64

In three phase, power measurement, the power factor of the load will be

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QUESTION: 65

Usually a C.T. has

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QUESTION: 66

The material of the shunt should have ____ temperature coefficient of resistance

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QUESTION: 67

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

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QUESTION: 68

168. In the following circuit, what will be the total capacitance

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QUESTION: 69

Two things which are the same for primary and secondary of transformers are

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QUESTION: 70

Short pitched coils in the alternators are used to

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QUESTION: 71

A magnetic circuit has a m.m.f. of 400 AT and a reluctance of 2 × 105 AT/Wb. The magneticflux in the magnetic circuit is

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QUESTION: 72

For the purpose of plugging

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QUESTION: 73

Candela is the unit of

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QUESTION: 74

Which torque is greater

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QUESTION: 75

A 30 kW, 300 V dc shunt generator has armature and field resistance 0.05W and 100Wrespectively. What is the generated emf ?

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QUESTION: 76

The circuit comprises of a coil of resistance R and inductance L, in parallel with an ideal
capacitor C. At the resonant frequency, the impedance of the parallel combination is

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QUESTION: 77

Low resistance from few ohms down to one micro ohm is measured using which one of thefollowing instruments ?

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QUESTION: 78

Which one of the following multirange voltmeter has high and constant input impedance ?

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QUESTION: 79

A moving coil instrument gives full scale deflection for 1 mA and has a resistance of5W. If a resistance of 0.55W is connected in parallel to the instrument, what is the maximum value of current it can measure ?

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QUESTION: 80

When two wattmeter method of measurement of power is used to measure power in abalanced 3-f circuit, if one wattmeter reading is zero, then

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QUESTION: 81

The illumination is directly proportional to the cosine of the angle made by the normal to theilluminated surface with the direction of the incident flux. Above statement is associated with

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QUESTION: 82

Optical instruments used for the comparison of candle power of different sources are knownas

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QUESTION: 83

The capacitor used in the auto transformer circuit for sodium vapour lamps, is for

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QUESTION: 84

Arc blow is a welding defect which is encountered in

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QUESTION: 85

Which method would you recommend for welding of aluminium alloys ?

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QUESTION: 86

When d is the dielectric loss angle, the value of tan d increases with

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QUESTION: 87