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Power Systems
Power Systems Assessment
Quiz 1
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Q.1
For an ac three-phase four wire system, having a voltage of 415V, with load ofkW and resistance of 0.at power factor of 0.The incurred copper losses of the system is ____
a) 4.955 kW
b) 47 kW
c) 49 kW
d) 7.9 kW
Q.2
Distributors fed at both ends has an advantage of ________________
a) continuous supply
b) fault isolation
c) being economical
d) all of the mentioned
Q.3
Power factor is higher
a) 2
b) 1,2
c) 1,2,3
d) 2,3
Q.4
The distribution feeding system of ring main system has ______________
a) one feeder
b) 2 feeders
c) 4 feeders
d) cannot be said
Q.5
A substation records a dip in the voltage received by 15%. To overcome this issue, the booster employed at the substation is ___________
a) a series wound generator coupled to dc shunt motor
b) a series wound motor
c) a shunt motor operating at lagging power factor
d) a shunt motor coupled to differential motor
Q.6
A substation records a dip in the voltage received by 15%. To overcome this issue, the booster employed at the substation which should have a _____________
a) low voltage and high current generator
b) high voltage and low current generator
c) medium voltage but high current generator
d) any of the mentioned
Q.7
Single core cables for an ac systems are not provided with armouring.
a) True
b) False
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