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Technical Test SSC JE: Electrical Engineering (EE)- 7


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52 Questions MCQ Test Mock Test Series for SSC JE Electrical Engineering | Technical Test SSC JE: Electrical Engineering (EE)- 7

Technical Test SSC JE: Electrical Engineering (EE)- 7 for Electrical Engineering (EE) 2022 is part of Mock Test Series for SSC JE Electrical Engineering preparation. The Technical Test SSC JE: Electrical Engineering (EE)- 7 questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Technical Test SSC JE: Electrical Engineering (EE)- 7 MCQs are made for Electrical Engineering (EE) 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Technical Test SSC JE: Electrical Engineering (EE)- 7 below.
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Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 1

A stand alone engine driven synchronous generator is feeding a partly inductive load. A capacitor is now connected across the load to completely nullify the inductive current. For this operation condition

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 1

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 2

A transistor may be used as a switching device or as a

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 3

In an ideal transformer primary and secondary induced emfs are

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 3

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 4

Factors affecting the values of resistances are

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 4

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 5

The function of starter in dc motor is to

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 5

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 6

Time delay relay is used

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 7

Murray loop test is used to locate the

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 7

Murray loop test is the most common and accurate method for locating earth faults and short-circuit faults.

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 8

The maximum efficiency for a transformer occurs at 80% of full load. Its core is Pc and ohmic loss is Poh at full load. For this, transformer, the ratio of Pc/Poh is

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 8

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 9

At low speed of three brush generator

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 9

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 10

The rotor of a stepper motor has no

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 10

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 11

A ceiling fan uses

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 11

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 12

The small pockets of air in the high voltage cable provide _____ relative permittivity,____ electric field and at these sites breakdown is likely to be initiated

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 12

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 13

Which of the following is correct ?

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 14

As compared to shunt and compound motors series motor have the highest torque becauseof its comparatively ____ at the start

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 15

Which element is used for making an electric iron element ?

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 16

A 2 cm long coil has 40 turns and carries a current of 650 mA. The magnetising force of the coil is

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 16

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 17

In a parallel a.c. circuit power loss is due to

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 18

An electric pyrometer is an instrument used to measure

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 19

A 200/100 V, 10 KVA transformer has 60 transformation ratio of the transformer ?

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 19

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 20

A synchronous capacitor is an over-excited motor running at

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 21

If 2% of the main current is to be passed through a galvanometer of resistance G, then resistance of the shunt required is

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 21

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 22

Star-delta starter of an induction motor

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 22

Correct Answer :- C

Explanation : The Star Delta Starter is a very common type of starter and is used extensively as compared to the other type of starting methods of the induction motor. A star delta is used for a cage motor designed to run normally on the delta connected stator winding.

Since the developed torque is proportional to the square of the voltage applied to an stator. Star delta starter reduces the starting torque to one-third that is obtained by direct delta starting.

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 23

In the circuit shown in the figure, i(t) is a unit step current. The steady-state value of v(t) is

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 23

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 24

Two coils have self inductances of 0.09 H and 0.01 H and mutual inductance of 0.015 H. The coefficient of coupling between the coils is

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 24

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 25

The configuration that can be used as a constant current source is

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 26

The DC current gain of a transistor in CE configuration is 100. Find its DC current gain in common base configuration

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 26

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 27

Starting torque of synchronous motor is

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 28

The maximum power developed in the synchronous motor will depend on

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 29

In an ac circuit Isinf is called

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 30

In the circuit shown in the figure below, the current supplied by the sinusoidal current source I is

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 30

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 31

Which of the following motors one will choose to drive the rotary compressor ?

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 32

The degree of mechanical vibrations produced by the laminations of a transformers depends on

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 33

A piece of oil soaked paper has been inserted between the plates of a parallel plate capacitor.Then the potential difference between the plates will

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 34

A coil with a certain number of turns has a specified time constants. If the number of turns is doubled, its time constant would

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 34

On doubling number of turns, inductance becomes four times as inductance is proportional to number of turns squared and resistance is only doubled, since time constant is inductance upon resistance, new time constant becomes 2T.

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 35

To maximize the driving torque in an induction type instrument, flux produced by shunt coil and series coil should be

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 36

If the supply polarity to the armature terminal of a separately excited d.c. motor is reversed, the motor will run under

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 37

Which of the following motor has high starting torque ?

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 38

Hysteresis loss in a dc machine are proportional to

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 39

In power station practice "spinning reserve" is

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 40

Grounding is generally done in transmission line at

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 41

For an electric arc welding the current range is usually

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 42

Current flow in a semiconductor depends on the phenomenon of

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 43

Maxwell inductance bridge is used for coil of Q value

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 44

Which one of the following is used for the measurement of 3-f power factor ?

Detailed Solution for Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 44

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 45

The speed of the meter disc on full load is kept the lowest possible in order to

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 46

The current and potential coil of a wattmeter were accidentally interchanged while connecting.After energizing the circuit, it was observed that the wattmeter did not show the reading. This could be due to

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 47

Which voltmeter would you select for measuring 50000 V direct current ?

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 48

The secondary of CT is never left open circuited because otherwise

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 49

Rated breaking capacity (MVA) of a circuit breaker is equal to

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 50

While using air blast circuit breaker, current chopping is a phenomenon often observed when

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 51

The arc voltage in a circuit breaker is

Technical Test SSC JE: Electrical Engineering (EE)- 7 - Question 52

The transformer efficiency at relatively light loads is quite low. This is due to

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