Study mode · no timer

All Electrical Engineering MCQs

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

Answers and explanations are always visible Take this quiz

2001Electrical EngineeringMedium

Series capacitors on transmission lines are of little use when the load VAR requirement is________?

Afluctuating

Bany of the above

Clarge

Dsmall

Correct answer

D. small

Explanation

The correct answer is small.

2002Electrical EngineeringMedium

The Zener current will be minimum when________?

ALoad current is maximum

BLoad current is minimum

CNone of the above

DLoad current is zero

Correct answer

A. Load current is maximum

Explanation

The correct answer is Load current is maximum.

2003Electrical EngineeringMedium

The power dissipation in each of four parallel branches is 1.2 W. The total power dissipation is________?

A4.8 W

B1.2 W

C12 W

D0.3 W

Correct answer

A. 4.8 W

Explanation

The correct answer is 4.8 W.

2004Electrical EngineeringMedium

In a power or distribution transformer about 10 per cent end turns are heavily insulated________?

Ato reflect the line surge and save the winding of a transformer from damage

Bto absorb the line surge voltage and save the winding of transformer from damage

Cnone of the above

Dto withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns

Correct answer

D. to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns

Explanation

The correct answer is to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns.

2005Electrical EngineeringMedium

In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ________?

ANone of the above

BShort

COpen

DPartially open

Correct answer

B. Short

Explanation

The correct answer is Short.

2006Electrical EngineeringMedium

To get the speed of D.C, motor below the normal without wastage of electrical energy is used?

Arheostatic control

Bnone of the above method

CWard Leonard control

Dany of the above method

Correct answer

C. Ward Leonard control

Explanation

The correct answer is Ward Leonard control.

2007Electrical EngineeringMedium

Cylindrical windings using circular conductors, employed in transformers, are________?

Adouble layered

Bmulti-layered

Csingle layered

Dnone of the above

Correct answer

B. multi-layered

Explanation

The correct answer is multi-layered.

2008Electrical EngineeringMedium

During open circuit test of a transformer:

Aprimary is supplied rated kVA

Bprimary is supplied current at reduced voltage

Cprimary is supplied rated voltage

Dprimary is supplied full-load current

Correct answer

C. primary is supplied rated voltage

Explanation

The correct answer is primary is supplied rated voltage.

2009Electrical EngineeringMedium

In an unregulated power supply, if load current increases, the output voltage ________?

ADecreases

BIncreases

CNone of the above

DRemains the same

Correct answer

A. Decreases

Explanation

The correct answer is Decreases.

2010Electrical EngineeringMedium

Hybrid means________?

AUnique

BNone of the above

CSingle

DMixed

Correct answer

D. Mixed

Explanation

The correct answer is Mixed.

In a power or distribution transformer about 10 per cent end turns are heavily insulated________?

Ato reflect the line surge and save the winding of a transformer from damage

Bto absorb the line surge voltage and save the winding of transformer from damage

Cnone of the above

Dto withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns

Correct answer

D. to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns

Explanation

The correct answer is to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns.