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The power loss is an important factor for the design of

feeder
generator
transmission line
motor

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HRC fuses provide best protection against

open circuits
short circuits
overload
reverse current

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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

6.25 A
12.5 A
25 A
3.125 A

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A differential relay measures the vector difference between

two currents
two voltages
None of these
two or more similar electrical quantities

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Air blast circuit breaker is used for

intermittent duty
short duty
repeated duty
over currents

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The rated secondary current of current transformer for relays is generally

5 A
30 A
20 A
10 A

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