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All Electrical Engineering MCQs

Study 3,658 Electrical Engineering MCQs with correct answers and explanations.

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1051Electrical EngineeringMedium

When two D.C. series generators are running in parallel, an equilizer bar is used________?

Ato increase the series flux

Bto reduce the combined effect of ar-mature reaction of both machines

Cso that two similar machines will pass approximately equal currents to the load

Dto increase the speed and hence generated e.m.f.

Correct answer

C. so that two similar machines will pass approximately equal currents to the load

Explanation

The correct answer is so that two similar machines will pass approximately equal currents to the load.

1052Electrical EngineeringMedium

In a star-delta starter of an induction motor________?

Aapplied voltage perl stator phase is 57.7% of the line voltage

Bresistance is inserted in the rotor

Cresistance is inserted in the stator

Dreduced voltage is applied to the stator

Correct answer

A. applied voltage perl stator phase is 57.7% of the line voltage

Explanation

The correct answer is applied voltage perl stator phase is 57.7% of the line voltage.

1053Electrical EngineeringMedium

In tramways which of the following motors is used?

AD.C. shunt motor

BAC. single phase capacitor start motor

CD.C. series motor

DA.C. three phase motor

Correct answer

C. D.C. series motor

Explanation

The correct answer is D.C. series motor.

1054Electrical EngineeringMedium

The superconductivity is due to________?

Aall electrons interact in the super-conducting state

Bnone of the above

Cthe electrons jump into nucleus at 0°K

Dthe crystal structure having no atomic vibration at 0°K

Correct answer

D. the crystal structure having no atomic vibration at 0°K

Explanation

The correct answer is the crystal structure having no atomic vibration at 0°K.

1055Electrical EngineeringMedium

The binary code of (21.125)10 is________?

A10101.001

B10101.010

C10100.111

D10100.001

Correct answer

A. 10101.001

Explanation

The correct answer is 10101.001.

1056Electrical EngineeringMedium

The working of a synchronous motor is similar to________?

Agear train arrangement

Bnone of the above

Ctransmission of mechanical power by shaft

Dturbine

Edistribution transformer

Correct answer

C. transmission of mechanical power by shaft

Explanation

The correct answer is transmission of mechanical power by shaft.

1057Electrical EngineeringMedium

For increasing the voltage rating, zeners are connected in________?

ANone of the above

BSeries-parallel

CParallel

DSeries

Correct answer

D. Series

Explanation

The correct answer is Series.

1058Electrical EngineeringMedium

In electric press, mica is used because it is conductor of heat but/and conductor of electricity?

Abad, good

Bgood, good

Cbad, bad

Dgood, bad

Correct answer

D. good, bad

Explanation

The correct answer is good, bad.

1059Electrical EngineeringMedium

The size of a power transistor is made considerably large to________?

AFacilitate connections

BNone of the above

CProvide easy handling

DDissipate heat

Correct answer

D. Dissipate heat

Explanation

The correct answer is Dissipate heat.

1060Electrical EngineeringMedium

By which of the following methods the temperature inside arc nace can be varied?

ABy varying the operating voltage

BBy disconnecting some of the heating elements

CBy varying the current through heating elements

DBy any of the above method

Correct answer

D. By any of the above method

Explanation

The correct answer is By any of the above method.

When two D.C. series generators are running in parallel, an equilizer bar is used________?

Ato increase the series flux

Bto reduce the combined effect of ar-mature reaction of both machines

Cso that two similar machines will pass approximately equal currents to the load

Dto increase the speed and hence generated e.m.f.

Correct answer

C. so that two similar machines will pass approximately equal currents to the load

Explanation

The correct answer is so that two similar machines will pass approximately equal currents to the load.

In a star-delta starter of an induction motor________?

Aapplied voltage perl stator phase is 57.7% of the line voltage

Bresistance is inserted in the rotor

Cresistance is inserted in the stator

Dreduced voltage is applied to the stator

Correct answer

A. applied voltage perl stator phase is 57.7% of the line voltage

Explanation

The correct answer is applied voltage perl stator phase is 57.7% of the line voltage.

The superconductivity is due to________?

Aall electrons interact in the super-conducting state

Bnone of the above

Cthe electrons jump into nucleus at 0°K

Dthe crystal structure having no atomic vibration at 0°K

Correct answer

D. the crystal structure having no atomic vibration at 0°K

Explanation

The correct answer is the crystal structure having no atomic vibration at 0°K.

All Electrical Engineering MCQs

When two D.C. series generators are running in parallel, an equilizer bar is used________?

In a star-delta starter of an induction motor________?

In tramways which of the following motors is used?

The superconductivity is due to________?

The binary code of (21.125)10 is________?

The working of a synchronous motor is similar to________?

For increasing the voltage rating, zeners are connected in________?

In electric press, mica is used because it is ________ conductor of heat but/and ________ conductor of electricity?

The size of a power transistor is made considerably large to________?

By which of the following methods the temperature inside arc nace can be varied?

All Electrical Engineering MCQs

When two D.C. series generators are running in parallel, an equilizer bar is used________?

In a star-delta starter of an induction motor________?

In tramways which of the following motors is used?

The superconductivity is due to________?

The binary code of (21.125)10 is________?

The working of a synchronous motor is similar to________?

For increasing the voltage rating, zeners are connected in________?

In electric press, mica is used because it is ________ conductor of heat but/and ________ conductor of electricity?

The size of a power transistor is made considerably large to________?

By which of the following methods the temperature inside arc nace can be varied?

In electric press, mica is used because it is conductor of heat but/and conductor of electricity?

In electric press, mica is used because it is conductor of heat but/and conductor of electricity?