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All Electrical Engineering MCQs

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

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621Electrical EngineeringMedium

For measurements on high voltage capacitors, the suitable bridge is________?

AAny of the above

BModified De Santy’s bridge

CWein bridge

DSchering bridge

ENone of the above

Correct answer

D. Schering bridge

Explanation

The correct answer is Schering bridge.

622Electrical EngineeringMedium

In a steam locomotive electric power is provided through________?

Abattery system

Bdiesel engine generator

Csmall turbo-generator

Doverhead wire

Correct answer

C. small turbo-generator

Explanation

The correct answer is small turbo-generator.

623Electrical EngineeringMedium

Rotor of a motor is usually supported on ________ bearings?

Aneedle

Bbush

Cthrust

Dball or roller

Correct answer

D. ball or roller

Explanation

The correct answer is ball or roller.

624Electrical EngineeringMedium

The disadvantage with paper as insulating material is________?

Ait is hygroscopic

Bnone of the above

Cit has high capacitance

Dit is an organic material

Correct answer

A. it is hygroscopic

Explanation

The correct answer is it is hygroscopic.

625Electrical EngineeringMedium

A cumulatively compounded long shunt generator when operating as a motor would be________?

Adeferentially compounded long shunt

Bdifferentially compounded short shunt

Ccumulatively compounded long shunt

Dcumulatively compounded short shunt

Correct answer

A. deferentially compounded long shunt

Explanation

The correct answer is deferentially compounded long shunt.

626Electrical EngineeringMedium

________ ICs are the most commonly used?

AThin films

BNone of the above

CHybrid

DMonolithic

Correct answer

D. Monolithic

Explanation

The correct answer is Monolithic.

627Electrical EngineeringMedium

Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a________?

Anone of the above

Bmagnetic relay

Ccentrifugal switch

Dthermal relay

Correct answer

B. magnetic relay

Explanation

The correct answer is magnetic relay.

628Electrical EngineeringMedium

Induction heating process is based on which of the following principles?

AResistance heating principle

BNucleate heating principle

CElectro-magnetic induction princi¬ple

DThermal ion release principle

Correct answer

C. Electro-magnetic induction princi¬ple

Explanation

The correct answer is Electro-magnetic induction princi¬ple.

629Electrical EngineeringMedium

Which of the following is the definition of proportional band of a controller?

AAny of the above

BNone of the above

CThe range of measured variables through which the air output changes from maximum to minimum

DThe range of air output as measured variable varies from maximum to minimum

EThe range of measured variables from set value

Correct answer

C. The range of measured variables through which the air output changes from maximum to minimum

Explanation

The correct answer is The range of measured variables through which the air output changes from maximum to minimum.

630Electrical EngineeringMedium

Approximate estimation of power demand can be made by________?

Aload survey method

Ball of the above

Ceconomic parameters

Dstatistical methods

Emathematical method

Correct answer

B. all of the above

Explanation

The correct answer is all of the above.

Which of the following is the definition of proportional band of a controller?

AAny of the above

BNone of the above

CThe range of measured variables through which the air output changes from maximum to minimum

DThe range of air output as measured variable varies from maximum to minimum

EThe range of measured variables from set value

Correct answer

C. The range of measured variables through which the air output changes from maximum to minimum

Explanation

The correct answer is The range of measured variables through which the air output changes from maximum to minimum.