Explore topic-wise MCQs in Electrical Engineering.

This section includes 517 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.

501.

Which of the following are the constants of the transmission lines?

A. Resistance
B. Inductance
C. Capacitance
D. All of the above
Answer» E.
Discussion
502.

Aluminium has a specific gravity of

A. 1.5
B. 2.7
C. 4.2
D. 7.8
Answer» C. 4.2
Discussion
503.

Owing to skin effect

A. Current flows through the half cross-section of the conductor
B. Portion of the conductor near the surface carries more current and core of the conductor carries less current
C. Portion of the conductor near the surface carries less current and core of the conductor carries more current
D. Any of the above
Answer» C. Portion of the conductor near the surface carries less current and core of the conductor carries more current
Discussion
504.

Which of the following is not a constituent for making porcelain insulators?

A. Quartz
B. Kaolin
C. Felspar
D. Silica
Answer» E.
Discussion
505.

________ are the conductors, which connect the consumer's terminals to the distribution.

A. Distributors
B. Service mains
C. Feeders
D. None of the above
Answer» C. Feeders
Discussion
506.

The operating voltage of high voltage cables is up to

A. l.lkV
B. 3.3kV
C. 6.6kV
D. llkV
Answer» E.
Discussion
507.

The presence of ozone due to corona is harmful because it

A. Reduces power factor
B. Corrodes the material
C. Gives odour
D. Transfer energy to the ground
Answer» C. Gives odour
Discussion
508.

Which of the following is the demerit of a 'constant voltage transmission system' ?

A. Increase of short-circuit current of the system
B. Availability of steady voltage at all loads at the line terminals
C. Possibility of better protection for the line due to possible use of higher terminal reactants
D. Improvement of power factor at times of moderate and heavy loads
E. Possibility of carrying increased power for a given conductor size in case of long-distance heavy power transmission
Answer» B. Availability of steady voltage at all loads at the line terminals
Discussion
509.

Skin effect is proportional to

A. (conductor diameter)
B. (conductor diameter)
C. (conductor diameter)
D. (conductor diameter)
E. none of the above
Answer» D. (conductor diameter)
Discussion
510.

High voltage transmission lines use

A. Suspension insulators
B. Pin insulators
C. Both (A) and (B)
D. None of the above
Answer» B. Pin insulators
Discussion
511.

Transmission line insulators are made of

A. glass
B. porcelain
C. iron
D. P.V.C.
Answer» C. iron
Discussion
512.

In a D.C. 3-wire distributor using balancers and having unequal loads on the two sides

A. both balancers run as generators
B. both balancers run as motors
C. balancer connected to lightly- loaded side runs as a motor
D. balancer connected to heavily- loaded side runs as a motor
Answer» D. balancer connected to heavily- loaded side runs as a motor
Discussion
513.

A feeder, in a transmission system, feeds power to

A. Distributors
B. Generating stations
C. Service mains
D. All of the above
Answer» B. Generating stations
Discussion
514.

The effect of corona can be detected by

A. Presence of ozone detected by odour
B. Hissing sound
C. Faint luminous glow of bluish color
D. All of the above
Answer» E.
Discussion
515.

Which of the following characteristics should the line supports for transmission lines possess?

A. Low cost
B. High mechanical strength
C. Longer life
D. All of the above
Answer» E.
Discussion
516.

A booster is a

A. Series wound generator
B. Shunt wound generator
C. Synchronous generator
D. None of the above
Answer» B. Shunt wound generator
Discussion
517.

On which of the following factors skin effect depends?

A. Frequency of the current
B. Size of the conductor
C. Resistivity of the conductor material
D. All of the above
Answer» E.
Discussion