The corona effect can be minimized by increasing

DGVCL Exam Paper (11-12-2011)
The corona effect can be minimized by increasing

Spacing between the conductors

Diameter of the conductor

The length of the conductor

Both spacing between the conductors and diameter of the conductor

Spacing between the conductors

Diameter of the conductor

The length of the conductor

Both spacing between the conductors and diameter of the conductor

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DGVCL Exam Paper (11-12-2011)
A 3 phase, 6 pole induction motor operates on 440 V, 50 Hz, supply. If the actual speed of the motor is 960 rpm the slip will be

4 %

0.4 %

6 %

5 %

4 %

0.4 %

6 %

5 %

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DGVCL Exam Paper (11-12-2011)
Transposition of transmission line is done to

Reduce skin effect

Reduce corona

Reduce line loss

Balance line voltage drop

Reduce skin effect

Reduce corona

Reduce line loss

Balance line voltage drop

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DGVCL Exam Paper (11-12-2011)
The purpose of skewing of rotor slots in an induction motor is

To reduce the locking tendency of the rotor

To reduce the magnetic hum of the motor

To increase the breadth factor

To increase the distributuion factor

To reduce the locking tendency of the rotor

To reduce the magnetic hum of the motor

To increase the breadth factor

To increase the distributuion factor

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DGVCL Exam Paper (11-12-2011)
Which type of back up protection is widely used for the protection of transmission lines?

Breaker backup

Remote backup

Relay backup

Control backup

Breaker backup

Remote backup

Relay backup

Control backup

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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

Extinguish

Increase in size

Restrike

Decrease in size

Extinguish

Increase in size

Restrike

Decrease in size

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) The corona effect can be minimized by increasing

DGVCL Exam Paper (11-12-2011) A 3 phase, 6 pole induction motor operates on 440 V, 50 Hz, supply. If the actual speed of the motor is 960 rpm the slip will be

DGVCL Exam Paper (11-12-2011) Transposition of transmission line is done to

DGVCL Exam Paper (11-12-2011) The purpose of skewing of rotor slots in an induction motor is

DGVCL Exam Paper (11-12-2011) Which type of back up protection is widely used for the protection of transmission lines?

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)
The corona effect can be minimized by increasing

DGVCL Exam Paper (11-12-2011)
A 3 phase, 6 pole induction motor operates on 440 V, 50 Hz, supply. If the actual speed of the motor is 960 rpm the slip will be

DGVCL Exam Paper (11-12-2011)
Transposition of transmission line is done to

DGVCL Exam Paper (11-12-2011)
The purpose of skewing of rotor slots in an induction motor is

DGVCL Exam Paper (11-12-2011)
Which type of back up protection is widely used for the protection of transmission lines?

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