The circuit breaker generally used in railway traction is

DGVCL Exam Paper (11-12-2011)
The circuit breaker generally used in railway traction is

Air break CB

Vacuum CB

Minimum Oil CB

Bulk Oil CB

Air break CB

Vacuum CB

Minimum Oil CB

Bulk Oil CB

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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

251.5 MW

435.6 MW

217.8 MW

500 MW

251.5 MW

435.6 MW

217.8 MW

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DGVCL Exam Paper (11-12-2011)
It is difficult interrupt a capacitive current because

The restriking voltage can be high

Stored energy in the capacitor is very high

It has a leading power factor

Current magnitude is very small

The restriking voltage can be high

Stored energy in the capacitor is very high

It has a leading power factor

Current magnitude is very small

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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 isolator close circuit breaker-open earthing switch

Close earthing switch - open ciruit- breaker-open islotor

Open circuit breaker-open isolator-close earthing switch

Close circuit breaker-close isolator - open earthing switch

Open isolator close circuit breaker-open earthing switch

Close earthing switch - open ciruit- breaker-open islotor

Open circuit breaker-open isolator-close earthing switch

Close circuit breaker-close isolator - open earthing switch

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DGVCL Exam Paper (11-12-2011)
The purpose of interpoles in DC machines is to nullify

The reactance voltage

The cross-magnetizing effect of armature mmf

Both the cross-magnetizing mmf and the reactance voltage

The demagnetizing effect of armature mmf

The reactance voltage

The cross-magnetizing effect of armature mmf

Both the cross-magnetizing mmf and the reactance voltage

The demagnetizing effect of armature mmf

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DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is

Capacitor start capacitor run motor

Split phase motor

Universal motor

Capacitor start motor

Capacitor start capacitor run motor

Split phase motor

Universal motor

Capacitor start motor

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) The circuit breaker generally used in railway traction is

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) It is difficult interrupt a capacitive current because

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) The purpose of interpoles in DC machines is to nullify

DGVCL Exam Paper (11-12-2011) The motor used in celling fans is

DGVCL Exam Paper (11-12-2011)
The circuit breaker generally used in railway traction is

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)
It is difficult interrupt a capacitive current because

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)
The purpose of interpoles in DC machines is to nullify

DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is