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DGVCL Exam Paper (11-12-2011)

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

Corona loss
Radio interference
Temperature rise
Voltage drop

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

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

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DGVCL Exam Paper (11-12-2011)
The positive and negative sequence impedance of a transmission line are

Equal
Zero
Infinite
Different

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

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

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DGVCL Exam Paper (11-12-2011)
Which motor is used to start heavy loads?

Series motor
Cumulatively compounded motor
Differentially compounded motor
Shunt motor

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Torque in d.c motor = k* φ * Ia
In series motor φ α Ia
Tα I²
starting torque of dc series motor is high

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

Vacuum CB
Bulk Oil CB
Minimum Oil CB
Air break CB

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

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