Rated making capacity of a ciruit breaker is equal to

DGVCL Exam Paper (11-12-2011)
Rated making capacity of a ciruit breaker is equal to

2.55 X rated symmetrical breaking capacity

√2 X rated symmetrical breaking capacity

1.11 X rated symmetrical breaking capacity

Rated symmetrical breaking capacity

2.55 X rated symmetrical breaking capacity

√2 X rated symmetrical breaking capacity

1.11 X rated symmetrical breaking capacity

Rated symmetrical breaking capacity

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DGVCL Exam Paper (11-12-2011)
Which of the following correctly represents the sequence of operations of isolator, circiut breaker and earthing switch while opening a circuit?

Open circuit breaker-open isolator-close earthing switch

Close earthing switch - open ciruit- breaker-open islotor

Open isolator close circuit breaker-open earthing switch

Close circuit breaker-close isolator - open earthing switch

Open circuit breaker-open isolator-close earthing switch

Close earthing switch - open ciruit- breaker-open islotor

Open isolator close circuit breaker-open earthing switch

Close circuit breaker-close isolator - open earthing switch

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DGVCL Exam Paper (11-12-2011)
If the fault current is 2000 A, the relay plug setting is 50% and the CT ratio is 400/5, the plug setting multiple will be

10

15

25

50

10

15

25

50

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DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

Cost of the machine

Harmonics in the generated emf

Amount of copper in the winding

Size of the machine

Cost of the machine

Harmonics in the generated emf

Amount of copper in the winding

Size of the machine

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DGVCL Exam Paper (11-12-2011)
In which of the following motors, the stator and rotor magnetic fields rotate at the same speed?

Synchronous motor

Universal motor

Induction motor

Reluctance motor

Synchronous motor

Universal motor

Induction motor

Reluctance motor

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DGVCL Exam Paper (11-12-2011)
If the voltage at the two ends of a line are 132 kV, and its reactance is 40 Ω, the stability limit of the line is

500 MW

435.6 MW

251.5 MW

217.8 MW

500 MW

435.6 MW

251.5 MW

217.8 MW

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) Rated making capacity of a ciruit breaker is equal to

DGVCL Exam Paper (11-12-2011) Which of the following correctly represents the sequence of operations of isolator, circiut breaker and earthing switch while opening a circuit?

DGVCL Exam Paper (11-12-2011) If the fault current is 2000 A, the relay plug setting is 50% and the CT ratio is 400/5, the plug setting multiple will be

DGVCL Exam Paper (11-12-2011) The main advantage of using fractional pitch winding is to refuce

DGVCL Exam Paper (11-12-2011) In which of the following motors, the stator and rotor magnetic fields rotate at the same speed?

DGVCL Exam Paper (11-12-2011) If the voltage at the two ends of a line are 132 kV, and its reactance is 40 Ω, the stability limit of the line is

DGVCL Exam Paper (11-12-2011)
Rated making capacity of a ciruit breaker is equal to

DGVCL Exam Paper (11-12-2011)
Which of the following correctly represents the sequence of operations of isolator, circiut breaker and earthing switch while opening a circuit?

DGVCL Exam Paper (11-12-2011)
If the fault current is 2000 A, the relay plug setting is 50% and the CT ratio is 400/5, the plug setting multiple will be

DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

DGVCL Exam Paper (11-12-2011)
In which of the following motors, the stator and rotor magnetic fields rotate at the same speed?

DGVCL Exam Paper (11-12-2011)
If the voltage at the two ends of a line are 132 kV, and its reactance is 40 Ω, the stability limit of the line is