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

Increase in size

Decrease in size

Extinguish

Restrike

Increase in size

Decrease in size

Extinguish

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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 directional proporational to torque

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

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 directional proporational to torque

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

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

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DGVCL Exam Paper (11-12-2011)
Buchholz relay causes

Tripping for both major and minor faults

Tripping for major faults and alarm for minor faults

Tripping for minor faults and alarm for major faults

Alarm for both major and minor faults

Tripping for both major and minor faults

Tripping for major faults and alarm for minor faults

Tripping for minor faults and alarm for major faults

Alarm for both major and minor faults

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DGVCL Exam Paper (11-12-2011)
In the protection of transformers, harmonic restraint is used to guard against

Switching over voltages

Unbalanced protection

Magnetizing inrush current

Lightning

Switching over voltages

Unbalanced protection

Magnetizing inrush current

Lightning

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DGVCL Exam Paper (11-12-2011)
The advantage of slipring induction motor over the squirrel cage induction motor is

It is suitable for higher speeds

It has a higher efficiency

It's power factor is higher

It can be started with the help of rotor resistances

It is suitable for higher speeds

It has a higher efficiency

It's power factor is higher

It can be started with the help of rotor resistances

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DGVCL Exam Paper (11-12-2011)
Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

The force increases when the distance between the conductors is increased

There is an attracting force between the conductors

There is a repelling force between the conductors

The force increases when the distance between the conductors is decreased

The force increases when the distance between the conductors is increased

There is an attracting force between the conductors

There is a repelling force between the conductors

The force increases when the distance between the conductors is decreased

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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) Buchholz relay causes

DGVCL Exam Paper (11-12-2011) In the protection of transformers, harmonic restraint is used to guard against

DGVCL Exam Paper (11-12-2011) The advantage of slipring induction motor over the squirrel cage induction motor is

DGVCL Exam Paper (11-12-2011) Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

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)
Buchholz relay causes

DGVCL Exam Paper (11-12-2011)
In the protection of transformers, harmonic restraint is used to guard against

DGVCL Exam Paper (11-12-2011)
The advantage of slipring induction motor over the squirrel cage induction motor is

DGVCL Exam Paper (11-12-2011)
Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?