MCQs Electrical Engineering
1. In which type of bus the magnitude and the phase angle of the voltage are known ?
(1) Transmission bus
(2) Load bus
(3) Generator bus
(4) Slack bus
Ans (4)
2. To reduce the steepness of wave front, _______is used .
(1) Lightning Arrester
(2) Surge Diverter
(3) Surge Absorbe
(4) Surge Modifier
Ans (4)
3. The simplest form of motor controller is :
(1) Relay
(2) Toggle switch
(3) Drum switch
(4) Magnetic switch
Ans (2)
4. The lighting arrester is conducted -
(1) in series with the line
(2) between line and earth
(3) to a pole near the line
(4) to circuit breaker
Ans (2)
5. A lightning arrestor is usually located nearer to -
(1) busbar
(2) transformer
(3) circuit breaker
(4)isolator
Ans (2)
6. A lightning arrester is located near to a :
(1) transformer
(2) Circuit Breaker
(3) bus bar
(4) isolator
Ans (1)
7. The use of Merz - price protection is applicable to
(1) Alternators
(2) Short transmission lines
(3)Long transmission lines
(4) Air cooled transformers
Ans (1)
8. Alightning arrester is usually located nearer to :
(1) Transformer
(2) Isolator
(3) Busbar
(4)Circuit breaker
Ans (1)
9. In the thyrite lightning arrester the resistance
(1) is high at low current and low at high current
(2) is low at low current and high at high current
(3)increases linearly with the applied voltage
(4)decreases linear with the applied voltage
Ans (4)
10. The most efficient torque-producing actuating structure for induction - type relay is :
(1) Shaded pole structure
(2) Watt-hour - meter structure
(3) Induction - cup structure
(4) Single - induction loop structure
Ans (3)
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