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)
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

15

25

50

10

15

25

50

10

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DGVCL Exam Paper (11-12-2011)
Under operating conditions, the secondary of a current transformer is always short ciruited because

It protects the primary ciruits

It avoids core saturation and high voltage induction

It is safe to human beings

It protects the secondary ciruits

It protects the primary ciruits

It avoids core saturation and high voltage induction

It is safe to human beings

It protects the secondary ciruits

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DGVCL Exam Paper (11-12-2011)
Due to skin effect

Portion of the conductor near the surface carries more current and the core of the conductor carries less current

Uniform current flows through the conductor

Current flows through the half cross section of the conductor

Portion of the conductor near the surface carries less current and the core of the conductor carries more current

Portion of the conductor near the surface carries more current and the core of the conductor carries less current

Uniform current flows through the conductor

Current flows through the half cross section of the conductor

Portion of the conductor near the surface carries less current and the core of the conductor carries more current

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DGVCL Exam Paper (11-12-2011)
The picture on the monitor of a computer is made up of tiny coloured dots called

Spots

Points

Icons

Pixels

Spots

Points

Icons

Pixels

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DGVCL Exam Paper (11-12-2011)
The efficiency of a transformer at full load, 0.8 p.f. lag is 90%. Its efficiency at full load, 0.8 p.f. lead will be

90 %

Less than 90%

More than 90%

80 %

90 %

Less than 90%

More than 90%

80 %

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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?

There is a repelling force between the conductors

The force increases when the distance between the conductors is decreased

There is an attracting force between the conductors

The force increases when the distance between the conductors is increased

There is a repelling force between the conductors

The force increases when the distance between the conductors is decreased

There is an attracting force between the conductors

The force increases when the distance between the conductors is increased

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DGVCL Exam Paper (11-12-2011)

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) Under operating conditions, the secondary of a current transformer is always short ciruited because

DGVCL Exam Paper (11-12-2011) Due to skin effect

DGVCL Exam Paper (11-12-2011) The picture on the monitor of a computer is made up of tiny coloured dots called

DGVCL Exam Paper (11-12-2011) The efficiency of a transformer at full load, 0.8 p.f. lag is 90%. Its efficiency at full load, 0.8 p.f. lead will be

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 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)
Under operating conditions, the secondary of a current transformer is always short ciruited because

DGVCL Exam Paper (11-12-2011)
Due to skin effect

DGVCL Exam Paper (11-12-2011)
The picture on the monitor of a computer is made up of tiny coloured dots called

DGVCL Exam Paper (11-12-2011)
The efficiency of a transformer at full load, 0.8 p.f. lag is 90%. Its efficiency at full load, 0.8 p.f. lead will be

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