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

0.5 leading

0.6 lagging

0.8 lagging

0.6 leading

0.5 leading

0.6 lagging

0.8 lagging

0.6 leading

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DGVCL Exam Paper (11-12-2011)
A Mho relay is a

Voltage controlled over current relay

Directional restrained over voltage relay

Directional restrained over current relay

Voltage restrained directional relay

Voltage controlled over current relay

Directional restrained over voltage relay

Directional restrained over current relay

Voltage restrained directional relay

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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

More than 90%

90 %

80 %

Less than 90%

More than 90%

90 %

80 %

Less than 90%

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

Gauss-Siedal

De-coupled method

Approximate method

Newton-Raphson

Gauss-Siedal

De-coupled method

Approximate method

Newton-Raphson

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DGVCL Exam Paper (11-12-2011)
In a power plant, a reserve generating capacity which is not in service but is in operation is known as

Firm power

Cold reserve

Spinning reserve

Hot reserve

Firm power

Cold reserve

Spinning reserve

Hot reserve

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

Low copper loss

Low iron loss

Low voltage

Low copper as well as iron loss

Low copper loss

Low iron loss

Low voltage

Low copper as well as iron loss

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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) A Mho relay is a

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) Fot fast load flow calculations, the best method is

DGVCL Exam Paper (11-12-2011) In a power plant, a reserve generating capacity which is not in service but is in operation is known as

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

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)
A Mho relay is a

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)
Fot fast load flow calculations, the best method is

DGVCL Exam Paper (11-12-2011)
In a power plant, a reserve generating capacity which is not in service but is in operation is known as

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