If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

DGVCL Exam Paper (11-12-2011)
If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

Under reach

Over reach

Reach

Pick up

Under reach

Over reach

Reach

Pick up

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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

10

50

15

25

10

50

15

25

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

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

Low copper loss

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DGVCL Exam Paper (11-12-2011)
A fuse is inserted in

Both phased and neutral wire

Phase wire

Earth continuity conductor

Neutral wire

Both phased and neutral wire

Phase wire

Earth continuity conductor

Neutral wire

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DGVCL Exam Paper (11-12-2011)
Buchholz relay causes

Tripping for major faults and alarm for minor faults

Alarm for both major and minor faults

Tripping for both major and minor faults

Tripping for minor faults and alarm for major faults

Tripping for major faults and alarm for minor faults

Alarm for both major and minor faults

Tripping for both major and minor faults

Tripping for minor faults and alarm for major faults

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DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

Amount of copper in the winding

Harmonics in the generated emf

Size of the machine

Cost of the machine

Amount of copper in the winding

Harmonics in the generated emf

Size of the machine

Cost of the machine

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

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) Distribution transformers have good all day efficiency due to

DGVCL Exam Paper (11-12-2011) A fuse is inserted in

DGVCL Exam Paper (11-12-2011) Buchholz relay causes

DGVCL Exam Paper (11-12-2011) The main advantage of using fractional pitch winding is to refuce

DGVCL Exam Paper (11-12-2011)
If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

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)
Distribution transformers have good all day efficiency due to

DGVCL Exam Paper (11-12-2011)
A fuse is inserted in

DGVCL Exam Paper (11-12-2011)
Buchholz relay causes

DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce