An AC series circuit has R = 6 Ω, XL = 20 Ω and Xc = 12 Ω. The ciruit power factor will be

DGVCL Exam Paper (11-12-2011)
An AC series circuit has R = 6 Ω, XL = 20 Ω and Xc = 12 Ω. The ciruit power factor will be

0.8 lagging

0.5 leading

0.6 leading

0.6 lagging

0.8 lagging

0.5 leading

0.6 leading

0.6 lagging

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DGVCL Exam Paper (11-12-2011)
The bus bar zone faults are generally

Single line to ground faults

Three phase short ciruits

Phase to phase faults

Double line to ground faults

Single line to ground faults

Three phase short ciruits

Phase to phase faults

Double line to ground faults

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

36 H

2.2 H

6 H

13 H

36 H

2.2 H

6 H

13 H

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

Low iron loss

Low copper loss

Low voltage

Low copper as well as iron loss

Low iron loss

Low copper loss

Low voltage

Low copper as well as iron loss

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

The cross-magnetizing effect of armature mmf

Both the cross-magnetizing mmf and the reactance voltage

The reactance voltage

The demagnetizing effect of armature mmf

The cross-magnetizing effect of armature mmf

Both the cross-magnetizing mmf and the reactance voltage

The reactance voltage

The demagnetizing effect of armature mmf

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DGVCL Exam Paper (11-12-2011)
Fot fast load flow calculations, the best method is

Gauss-Siedal

Approximate method

Newton-Raphson

De-coupled method

Gauss-Siedal

Approximate method

Newton-Raphson

De-coupled method

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) An AC series circuit has R = 6 Ω, XL = 20 Ω and Xc = 12 Ω. The ciruit power factor will be

DGVCL Exam Paper (11-12-2011) The bus bar zone faults are generally

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) Distribution transformers have good all day efficiency due to

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

DGVCL Exam Paper (11-12-2011) Fot fast load flow calculations, the best method is

DGVCL Exam Paper (11-12-2011)
An AC series circuit has R = 6 Ω, XL = 20 Ω and Xc = 12 Ω. The ciruit power factor will be

DGVCL Exam Paper (11-12-2011)
The bus bar zone faults are generally

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)
Distribution transformers have good all day efficiency due to

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

DGVCL Exam Paper (11-12-2011)
Fot fast load flow calculations, the best method is