The mutual inductance between two unity coupled coils of 9 H and 4 H is

DGVCL Exam Paper (11-12-2011)
The mutual inductance between two unity coupled coils of 9 H and 4 H is

13 H

6 H

2.2 H

36 H

13 H

6 H

2.2 H

36 H

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DGVCL Exam Paper (11-12-2011)
In carrier current protection, the purpose of the wave trap is for

All of these

Trapping power frequency waves

Tripping fault current

Trapping high frequency waves entering into generator/transformer unit.

All of these

Trapping power frequency waves

Tripping fault current

Trapping high frequency waves entering into generator/transformer unit.

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DGVCL Exam Paper (11-12-2011)
Distribution transformers have good all day efficiency due to

Low copper as well as iron loss

Low voltage

Low iron loss

Low copper loss

Low copper as well as iron loss

Low voltage

Low iron loss

Low copper loss

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

Split phase motor

Capacitor start capacitor run motor

Universal motor

Capacitor start motor

Split phase motor

Capacitor start capacitor run motor

Universal motor

Capacitor start motor

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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

Magnetizing inrush current

Unbalanced protection

Lightning

Switching over voltages

Magnetizing inrush current

Unbalanced protection

Lightning

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

Minimum Oil CB

Vacuum CB

Air break CB

Bulk Oil CB

Minimum Oil CB

Vacuum CB

Air break CB

Bulk Oil CB

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) The mutual inductance between two unity coupled coils of 9 H and 4 H is

DGVCL Exam Paper (11-12-2011) In carrier current protection, the purpose of the wave trap is for

DGVCL Exam Paper (11-12-2011) Distribution transformers have good all day efficiency due to

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

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 circuit breaker generally used in railway traction is

DGVCL Exam Paper (11-12-2011)
The mutual inductance between two unity coupled coils of 9 H and 4 H is

DGVCL Exam Paper (11-12-2011)
In carrier current protection, the purpose of the wave trap is for

DGVCL Exam Paper (11-12-2011)
Distribution transformers have good all day efficiency due to

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

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 circuit breaker generally used in railway traction is