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Quiz 3
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Q.1
Use of high speed circuit breaker will actually increase the system stability.
False
True
Q.2
Which one of the following device is used for improving the power factor of the system:
Synchronous Phase Modifier
Shunt Reactor
Series Reactor
Asynchronous Generator
Q.3
When a line to ground fault occurs,the current in faulted phase isA.The zero sequence current in this case will be
0 A
33.3 A
66.6 A
100 A
Q.4
For the single phase 2-wire system, the maximum voltage between the outer wires and earth is ______________
V/√2
√2V
V
2V
Q.5
Which among the following quantities are specified at the generator bus?
P and Q
P and |V|
Q and |V|
P and δ
Q.6
Which one of the following loads has the poorest power factor?
Electric fan Induction motor
Transformer
Induction motor
Induction furnace
Q.7
Phase advancers are used to improve the power factor of
Induction motors
Induction generators
Synchronous motors
Synchronous generators
Q.8
At what value of ‘δ’ the maximum power transfer takes place
90 degree
0 degree
45 degree
30 degree
Q.9
Which among these is related to the critical clearing timeof a fault in a power system?
Transient stability limit
Steady state stability limit
Frequency limit
All of these
Q.10
The Critical Clearance time of a fault in the power system is related to
Reactive power limit
Short Circuit limit
Steady state stability limit
Transient stability limit
0 h : 0 m : 1 s
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