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All Electrical Engineering MCQs

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

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611Electrical EngineeringMedium

The travelling speed of cranes varies from________?

A10 to 15 m/s

B1 to 2.5 m/s

C5 to 10 m/s

D20 to 30 m/s

Correct answer

B. 1 to 2.5 m/s

Explanation

The correct answer is 1 to 2.5 m/s.

612Electrical EngineeringMedium

ON state voltage drop across SCR lie between the range________?

A1.5 – 2 V.

B0 – 0.5 V.

C0.5 – 1 V.

D1 – 1.5 V.

Correct answer

D. 1 – 1.5 V.

Explanation

The correct answer is 1 – 1.5 V..

613Electrical EngineeringMedium

For the transmission of heat from one body to another________?

Atemperature of the two bodies must be different

Bboth bodies must be in contact

Cboth bodies must be solids

Dat least one of the bodies must have some source of heating

Correct answer

A. temperature of the two bodies must be different

Explanation

The correct answer is temperature of the two bodies must be different.

614Electrical EngineeringMedium

The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is________?

A0.5457

B0.555

C0.578

D0.6

Correct answer

C. 0.578

Explanation

The correct answer is 0.578.

615Electrical EngineeringMedium

The current flowing through an unloaded voltage divider is called the________?

Aresistor current

Bbleeder current

Cload current

Dvoltage current

Correct answer

B. bleeder current

Explanation

The correct answer is bleeder current.

616Electrical EngineeringMedium

If the distance between the two point charges become half then force between them becomes________?

Afour times

Bremains same

Cdouble

Dhalf

Correct answer

A. four times

Explanation

The correct answer is four times.

617Electrical EngineeringMedium

Quartz crystal is most commonly used in crystal oscillators because:________?

AIt is easily available

BNone of the above

CIt has superior electrical properties

DIt is quite inexpensive

Correct answer

C. It has superior electrical properties

Explanation

The correct answer is It has superior electrical properties.

618Electrical EngineeringMedium

In a transformer the energy is conveyed from primary to secondary________?

Anone of the above

Bthrough cooling coil

Cby the flux

Dthrough air

Correct answer

C. by the flux

Explanation

The correct answer is by the flux.

619Electrical EngineeringMedium

In an A.C. circuit power is dissipated in________?

Acapacitance only

Bnone of the above

Cresistance only

Dinductance only

Correct answer

C. resistance only

Explanation

The correct answer is resistance only.

620Electrical EngineeringMedium

In ________ fuel transportation cost is least.

ANone

Bsteam power stations

Cnuclear power plants

Ddiesel generating plants

Correct answer

C. nuclear power plants

Explanation

The correct answer is nuclear power plants.

For the transmission of heat from one body to another________?

Atemperature of the two bodies must be different

Bboth bodies must be in contact

Cboth bodies must be solids

Dat least one of the bodies must have some source of heating

Correct answer

A. temperature of the two bodies must be different

Explanation

The correct answer is temperature of the two bodies must be different.