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All Electrical Engineering MCQs

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

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311Electrical EngineeringMedium

A condenser suitable for D.C. only is________?

Apoled aluminium electrolytic condenser

Bmetallic plate variable gang condenser

Coil impregrated paper condenser

Dmetallic paper capacitor

Correct answer

A. poled aluminium electrolytic condenser

Explanation

The correct answer is poled aluminium electrolytic condenser.

312Electrical EngineeringMedium

Magnetic field in a D.C. generator is produced by________?

Apermanent magnets

Belectromagnets

Cnone of the above

Dboth A. and B.

Correct answer

B. electromagnets

Explanation

The correct answer is electromagnets.

313Electrical EngineeringMedium

The capacity of a lead-acid cell is measured in________?

Awatt-hours

Bwatts

Camperes

Dampere-hours

Correct answer

D. ampere-hours

Explanation

The correct answer is ampere-hours.

314Electrical EngineeringMedium

A typical output of a solar cell is________?

A2 V

B1.1 V

C0.1V

D0.26 V

Correct answer

D. 0.26 V

Explanation

The correct answer is 0.26 V.

315Electrical EngineeringMedium

The usual values of maximum flux densities for distribution transformers using hot rolled silicon steel are________?

A0.8 to 1.0 Wb/m2

B0.5 to 0.8 Wb/m2

C1.1 to 1.35 Wb/m2

D1.4 to 1.8 Wb/m2

Correct answer

C. 1.1 to 1.35 Wb/m2

Explanation

The correct answer is 1.1 to 1.35 Wb/m2.

316Electrical EngineeringMedium

Which of the following is an electromagnetically device?

AThermocouple

BNone of the above

CLVDT

DInduction relay

EAny of the above

Correct answer

C. LVDT

Explanation

The correct answer is LVDT.

317Electrical EngineeringMedium

The capacitor preferred for high frequency circuits is________?

Aair capacitor

Belectrolytic capacitor

Cnone of the above

Dmica capacitor

Correct answer

D. mica capacitor

Explanation

The correct answer is mica capacitor.

318Electrical EngineeringMedium

Selenium rectifier can be operated at temperatures as high as________?

A25°C

B60°C

C75°C

D40°C

Correct answer

C. 75°C

Explanation

The correct answer is 75°C.

319Electrical EngineeringMedium

________field is associated with the capacitor?

ABoth (A) and (B)

BMagnetic

CNone of the above

DElectric

Correct answer

D. Electric

Explanation

The correct answer is Electric.

320Electrical EngineeringMedium

The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be________?

Aat the end connections

Bat the end terminals

Cat the slot edge where coil enters or comes out of the slot

Danywhere on the winding inside a slot

Correct answer

C. at the slot edge where coil enters or comes out of the slot

Explanation

The correct answer is at the slot edge where coil enters or comes out of the slot.

The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be________?

Aat the end connections

Bat the end terminals

Cat the slot edge where coil enters or comes out of the slot

Danywhere on the winding inside a slot

Correct answer

C. at the slot edge where coil enters or comes out of the slot

Explanation

The correct answer is at the slot edge where coil enters or comes out of the slot.