If the dielectric strength of the medium between the contacts builds up more rapidly than the restriking voltage the arc will

DGVCL Exam Paper (11-12-2011)
If the dielectric strength of the medium between the contacts builds up more rapidly than the restriking voltage the arc will

Restrike

Extinguish

Increase in size

Decrease in size

Restrike

Extinguish

Increase in size

Decrease in size

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DGVCL Exam Paper (11-12-2011)
DC series motors are best suited for traction work because

Its torque is proportional to the square of the armature current and speed is inversely proportional to torque

Torque and speed are inversely proportional to the square of the armature current

Its torque is proportional to the square of the armature current and speed is directional proporational to torque

Torque and speed are proportional to the square of the armature current

Its torque is proportional to the square of the armature current and speed is inversely proportional to torque

Torque and speed are inversely proportional to the square of the armature current

Its torque is proportional to the square of the armature current and speed is directional proporational to torque

Torque and speed are proportional to the square of the armature current

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DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

Eliminate losses on account of fair friction

Reduce winding losses

Reduce bearing friction

Eliminate hunting and provide adequate starting torque

Eliminate losses on account of fair friction

Reduce winding losses

Reduce bearing friction

Eliminate hunting and provide adequate starting torque

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

Rated symmetrical breaking capacity

2.55 X rated symmetrical breaking capacity

1.11 X rated symmetrical breaking capacity

√2 X rated symmetrical breaking capacity

Rated symmetrical breaking capacity

2.55 X rated symmetrical breaking capacity

1.11 X rated symmetrical breaking capacity

√2 X rated symmetrical breaking capacity

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

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

The reactance voltage

The cross-magnetizing effect of armature mmf

Both the cross-magnetizing mmf and the reactance voltage

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DGVCL Exam Paper (11-12-2011)
An IDMT relay provides

A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current

An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current

An inverse time current characteristic

A definite time cuttent characteristic

A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current

An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current

An inverse time current characteristic

A definite time cuttent characteristic

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) If the dielectric strength of the medium between the contacts builds up more rapidly than the restriking voltage the arc will

DGVCL Exam Paper (11-12-2011) DC series motors are best suited for traction work because

DGVCL Exam Paper (11-12-2011) The purpose of embedding the damper winding in the pole face of a synchronous motor is to

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

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

DGVCL Exam Paper (11-12-2011) An IDMT relay provides

DGVCL Exam Paper (11-12-2011)
If the dielectric strength of the medium between the contacts builds up more rapidly than the restriking voltage the arc will

DGVCL Exam Paper (11-12-2011)
DC series motors are best suited for traction work because

DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

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

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

DGVCL Exam Paper (11-12-2011)
An IDMT relay provides