A. Lightning arresters
B. Relays
C. Step-down transformer
D. Switchgear
0
A _________ is used to measure the stator % winding temperature of the generator?
0
Distance relays are generally_____________?
A. thermocouple
B. pyrometer
C. resistance thermometer
D. thermometer
0
relays are used for phase faults on long line?
A. split-phase relays
B. reactance relays
C. impedance relays
D. none of the above
0
relay is preferred for phase fault on short transmission line?
A. Impedance
B. Reactance
C. Either of the above
D. None of the above
0
For which of the following ratings of the transformer differential protection is recommended ?
A. Induction type
B. Reactance
C. Impedance
D. None of the above
0
The short circuit in any winding of the transformer is the result of_______________?
A. above 30 kVA.
B. equal to and above 5 MVA
C. equal to and above 25 MVA
D. none of the above
0
The short circuit in any winding of the transformer is the result of______________?
A. mechanical vibration
B. insulation failure
C. loose connection
D. impulse voltage
0
Which of the following circuit breakers has high reliability and minimum maintenance ?
A. mechanical vibration
B. insulation failure
C. loose connection
D. impulse voltage
0
Over voltage protection is recommended for______________?
A. Air blast circuit breakers
B. Circuit breaker with SF6 gas
C. Vacuum circuit breakers
D. Oil circuit breakers
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