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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
If the percentage reactance of the system upto the point of fault is 20% and the base kVA is 10,000 the short ciruit kVA is

50 MVA
10 MVA
60 MVA
20 MVA

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Short circuit kVA = Base kVA/%X

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

Direct stroke on ground wire
Indirect stroke on conductor
Direct stoke on tower top
Direct stroke on line conductor

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

Air break CB
Minimum Oil CB
Bulk Oil CB
Vacuum CB

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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

Over reach
Under reach
Pick up
Reach

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DGVCL Exam Paper (11-12-2011)
The main criterion for the design of a distributor is

Corona loss
Temperature rise
Radio interference
Voltage drop

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DGVCL Exam Paper (11-12-2011)
Permittivity is expressed in terms of

Weber /m
farad/sq. m.
Farad/m
N/m

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MORE MCQ ON DGVCL Exam Paper (11-12-2011)

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