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Admittance relay is

None of these
impedance relay
non-directional relay
directional relay

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A fuse should have

low cost
All of these
high conductivity
low melting point

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SF 6 gas

has pungent small
Is nontoxic
is yellow in colour
is lighter than air

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The power loss is an important factor for the design of

motor
feeder
generator
transmission line

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The normal current in a power line is 100 A. If a short-circuit fault occurs on the line, then one can expect the short-circuit current to be

200 A
300 A
more than 1000 A
100 A

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A differential relay measures the vector difference between

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

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