In a series RLC circuit at resonance

DGVCL Exam Paper (11-12-2011)
In a series RLC circuit at resonance

Current is minimum and power factor is 0.5

Current is minimum and power factor is unity

Current is maximum and power factor is 0.5

Current is maximum and power factor is unity

Current is minimum and power factor is 0.5

Current is minimum and power factor is unity

Current is maximum and power factor is 0.5

Current is maximum and power factor is unity

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
Which lightning stroke is most dangerous?

Direct stroke on ground wire

Direct stroke on line conductor

Indirect stroke on conductor

Direct stoke on tower top

Direct stroke on ground wire

Direct stroke on line conductor

Indirect stroke on conductor

Direct stoke on tower top

ANSWER DOWNLOAD EXAMIANS APP

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

Low copper loss

Low iron loss

Low copper as well as iron loss

Low voltage

Low copper loss

Low iron loss

Low copper as well as iron loss

Low voltage

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

It is safe to human beings

It avoids core saturation and high voltage induction

It protects the secondary ciruits

It protects the primary ciruits

It is safe to human beings

It avoids core saturation and high voltage induction

It protects the secondary ciruits

It protects the primary ciruits

ANSWER DOWNLOAD EXAMIANS APP

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

50

25

10

15

50

25

10

15

ANSWER DOWNLOAD EXAMIANS APP

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

Less than 90%

80 %

90 %

More than 90%

Less than 90%

80 %

90 %

More than 90%

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) In a series RLC circuit at resonance

DGVCL Exam Paper (11-12-2011) Which lightning stroke is most dangerous?

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

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) 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) 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)
In a series RLC circuit at resonance

DGVCL Exam Paper (11-12-2011)
Which lightning stroke is most dangerous?

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

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)
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)
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