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The power loss is an important factor for the design of

transmission line
generator
feeder
motor

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Air blast circuit breakers for 400 kV power system are designed to operate in

50 milli-second
0.1 sec
0.5 sec
100 micro-second

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To reduce short circuit fault currents......... are used.

resistors
capacitors
None of these
reactors

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An overcurrent relay having current settling of 125% is connected to a supply circuit through a current transformer of 400/5 A. The pick-up current is

12.5 A
25 A
3.125 A
6.25 A

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The fuse rating is expressed in terms of

voltage
kVA
VAR
current

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Outdoor switchgear is generally used for voltage beyond

33 kV
66 kV
132 kV
11 kV

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