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All Electrical Engineering MCQs

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

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1361Electrical EngineeringMedium

Which D.C. motor is generally preferred for cranes and hoists?

AShunt motor

BDifferentially compounded motor

CCumulatively compounded motor

DSeries motor

Correct answer

D. Series motor

Explanation

The correct answer is Series motor.

1362Electrical EngineeringMedium

A non inverting closed loop op amp circuit generally has a gain factor________?

AGreater than one

BOf zero

CEqual to one

DLess than one

Correct answer

A. Greater than one

Explanation

The correct answer is Greater than one.

1363Electrical EngineeringMedium

In a sine wave the slope is constant________?

Abetween 90° and 180°

Bbetween 180° and 270°

Cno where

Dbetween 0° and 90°

Correct answer

C. no where

Explanation

The correct answer is no where.

1364Electrical EngineeringMedium

The most commonly used semiconductor is________?

ASilicon

BGermanium

CSulphur

DCarbon

Correct answer

A. Silicon

Explanation

The correct answer is Silicon.

1365Electrical EngineeringMedium

A capacitor consists of two________?

Asilver-coated insulators

Bconductors separated by an insulator

Cinsulators separated by a dielectric

Dceramic plates and one mica disc

Correct answer

B. conductors separated by an insulator

Explanation

The correct answer is conductors separated by an insulator.

1366Electrical EngineeringMedium

D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the________?

Ashunt motor

Bany of the above

Ccompound motor

Dseries motor

Correct answer

D. series motor

Explanation

The correct answer is series motor.

1367Electrical EngineeringMedium

What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease?

AC & D

BA & D

CB & C

DA & B

Correct answer

D. A & B

Explanation

The correct answer is A & B.

1368Electrical EngineeringMedium

The input capacitor in an amplifier is the________ capacitor?

ABypass

BLeakage

CCoupling

DNone of the above

Correct answer

C. Coupling

Explanation

The correct answer is Coupling.

1369Electrical EngineeringMedium

In a series–parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens, then R2‘s voltage will:________?

Acannot tell

Bincrease

Cdecrease

Dremain the same

Correct answer

C. decrease

Explanation

The correct answer is decrease.

1370Electrical EngineeringMedium

If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ________?

A20 V

B2 V

C5 V

D10 V

Correct answer

D. 10 V

Explanation

The correct answer is 10 V.

1361Electrical EngineeringMedium

Which D.C. motor is generally preferred for cranes and hoists?

AShunt motor

BDifferentially compounded motor

CCumulatively compounded motor

DSeries motor

Correct answer

D. Series motor

Explanation

The correct answer is Series motor.

1362Electrical EngineeringMedium

A non inverting closed loop op amp circuit generally has a gain factor________?

AGreater than one

BOf zero

CEqual to one

DLess than one

Correct answer

A. Greater than one

Explanation

The correct answer is Greater than one.

1363Electrical EngineeringMedium

In a sine wave the slope is constant________?

Abetween 90° and 180°

Bbetween 180° and 270°

Cno where

Dbetween 0° and 90°

Correct answer

C. no where

Explanation

The correct answer is no where.

1364Electrical EngineeringMedium

The most commonly used semiconductor is________?

ASilicon

BGermanium

CSulphur

DCarbon

Correct answer

A. Silicon

Explanation

The correct answer is Silicon.

1365Electrical EngineeringMedium

A capacitor consists of two________?

Asilver-coated insulators

Bconductors separated by an insulator

Cinsulators separated by a dielectric

Dceramic plates and one mica disc

Correct answer

B. conductors separated by an insulator

Explanation

The correct answer is conductors separated by an insulator.

1366Electrical EngineeringMedium

D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the________?

Ashunt motor

Bany of the above

Ccompound motor

Dseries motor

Correct answer

D. series motor

Explanation

The correct answer is series motor.

1367Electrical EngineeringMedium

What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease?

AC & D

BA & D

CB & C

DA & B

Correct answer

D. A & B

Explanation

The correct answer is A & B.

1368Electrical EngineeringMedium

The input capacitor in an amplifier is the________ capacitor?

ABypass

BLeakage

CCoupling

DNone of the above

Correct answer

C. Coupling

Explanation

The correct answer is Coupling.

1369Electrical EngineeringMedium

In a series–parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens, then R2‘s voltage will:________?

Acannot tell

Bincrease

Cdecrease

Dremain the same

Correct answer

C. decrease

Explanation

The correct answer is decrease.

1370Electrical EngineeringMedium

If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ________?

A20 V

B2 V

C5 V

D10 V

Correct answer

D. 10 V

Explanation

The correct answer is 10 V.