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All Electrical Engineering MCQs

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

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2851Electrical EngineeringMedium

For the same H.P. rating and full load speed, following motor has poor starting torque________?

Acumulativelyc’ompounded

Bseries

Cshunt

Ddifferentially compounded

Correct answer

D. differentially compounded

Explanation

The correct answer is differentially compounded.

2852Electrical EngineeringMedium

If a charged rod is brought closer to a gas filled balloon then________?

ABalloon bursts

BBalloon squeezes

CRadius decreases

DRadius increase

Correct answer

D. Radius increase

Explanation

The correct answer is Radius increase.

2853Electrical EngineeringMedium

The knowledge of diversity factor helps in determining________?

Aaverage load

Bplant capacity

Cpeak load

DkWh generated

Correct answer

B. plant capacity

Explanation

The correct answer is plant capacity.

2854Electrical EngineeringMedium

The signal generator generally used in the laboratories is________oscillator?

AWien-bridge

BCrystal

CHartely

DPhase shift

Correct answer

A. Wien-bridge

Explanation

The correct answer is Wien-bridge.

2855Electrical EngineeringMedium

________cannot be fabricated on an IC?

ALarge inductors and transformers

BResistors

CDiodes

DTransistors

Correct answer

A. Large inductors and transformers

Explanation

The correct answer is Large inductors and transformers.

2856Electrical EngineeringMedium

For a particular application the type of electric-and control gear are determined by which of the following considerations?

ALimitation on starting current

BSpeed control range and its nature

CStarting torque

DAll of the above

EConditions of environment

Correct answer

D. All of the above

Explanation

The correct answer is All of the above.

2857Electrical EngineeringMedium

Fleming’s right-hand rule regarding direction of induced e.m.f., correlates________?

Amagnetic field strength, induced voltage and current

Bmagnetic flux, direction of motion and the direction of e.m.f. induced

Cmagnetic flux, direction of force and direction of motion of conductor

Dmagnetic flux, direction of current flow and resultant force

Correct answer

B. magnetic flux, direction of motion and the direction of e.m.f. induced

Explanation

The correct answer is magnetic flux, direction of motion and the direction of e.m.f. induced.

2858Electrical EngineeringMedium

Which of the following statements regarding repulsion-start induction motor is incorrect?

AIt requires more maintenance of commutator and other mechanical devices

BIt is not easily reversed

CIn fractional horse power motors, it has replaced the capacitor motors

DIt makes quite a bit of noise on starting

Correct answer

C. In fractional horse power motors, it has replaced the capacitor motors

Explanation

The correct answer is In fractional horse power motors, it has replaced the capacitor motors.

2859Electrical EngineeringMedium

A voltmeter is connected in a ________ with the circuit component across which potential difference is to be measured?

ASeries or parallel

BSeries

CParallel

DNone of the above

Correct answer

C. Parallel

Explanation

The correct answer is Parallel.

2860Electrical EngineeringMedium

Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct?

ABoth lamps will glow equally bright

B100 W lamp will glow brighter

C40 W lamp will fuse

D40 W lamp will glow brighter

Correct answer

D. 40 W lamp will glow brighter

Explanation

The correct answer is 40 W lamp will glow brighter.

Fleming’s right-hand rule regarding direction of induced e.m.f., correlates________?

Amagnetic field strength, induced voltage and current

Bmagnetic flux, direction of motion and the direction of e.m.f. induced

Cmagnetic flux, direction of force and direction of motion of conductor

Dmagnetic flux, direction of current flow and resultant force

Correct answer

B. magnetic flux, direction of motion and the direction of e.m.f. induced

Explanation

The correct answer is magnetic flux, direction of motion and the direction of e.m.f. induced.

Which of the following statements regarding repulsion-start induction motor is incorrect?

AIt requires more maintenance of commutator and other mechanical devices

BIt is not easily reversed

CIn fractional horse power motors, it has replaced the capacitor motors

DIt makes quite a bit of noise on starting

Correct answer

C. In fractional horse power motors, it has replaced the capacitor motors

Explanation

The correct answer is In fractional horse power motors, it has replaced the capacitor motors.