Multiple Choice Questions (MCQ) on Basic Electrical Engineering

Multiple Choice Questions (MCQ) on Basic Electrical Engineering

1-Which of the following motors is used in ceiling fan?

(A) Universal motor

(B) Synchronous motor

(C) Series motor

(D) Induction motor

 

2-Number of parallel path in wave winding is:

(A) 2

(B) 3

(C) 4

(D) 6

 

3-CT is used for measuring

(A) Voltage

(B) Frequency

(C) Power factor

(D) Alternating current

 

4-Active power in 3 phase circuit is:

(A) √3 VLIL Cosφ

(B) 3 VLIL Cosφ

(C) √2 VLIL Cosφ

(D) 2 VLIL Cosφ

 

5-Zener diodes are commonly used as:

(A) Rectifier

(B) Amplifier

(C) Voltage regulator

(D) Filter

 

6-Unit of reluctance:

(A) Ampere Turns/Weber

(B) Weber Turns

(C) Henry

(D) Weber Turns/Ampere

 

7-Unit of luminous intensity is

(A) Lumen

(B) Lux

(C) Lumen/m2

(D) Candela

 

8-Which of the following is secondary cell?

(A) Dry cell

(B) Leclanche cell

(C) Voltaic cell

(D) Lead acid cell

 

9-Energy stored in inductor is:

(A) W = (1/4)LI2

(B) W = (1/2)LI2

(C) W = (1/2)L2I

(D) W = (1/2)L2I2

 

10-The power factor of pure resistive circuit is

(A) Zero

(B) Leading

(C) Lagging

(D) Unity

 

ANSWERS:

1-(D), 2-(A), 3-(D), 4-(A), 5-(C), 6-(A), 7-(D), 8-(D), 9-(B), 10-(D)