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The fuse rating is expressed in terms of
current
VAR
voltage
kVA
current
VAR
voltage
kVA
Answer
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An isolator is designed to open a circuit under
None of these
no load
full load
normal conditions
None of these
no load
full load
normal conditions
Answer
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The relay operating speed depends upon
armature core air gap
the spring tension
the rate of flux built up
All of these
armature core air gap
the spring tension
the rate of flux built up
All of these
Answer
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The time-current graph of a fuse
None of these
has inverse characteristic
has a linear characteristic
is a circle
None of these
has inverse characteristic
has a linear characteristic
is a circle
Answer
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The time of closing the cycle, in modern circuit breakers is
0.001 sec
0.10 sec
0.01 sec
0.003 sec
0.001 sec
0.10 sec
0.01 sec
0.003 sec
Answer
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The rate of rise of restriking voltage depends on
the inductance of the system only
the type of circuit breaker
both inductance and capacitance of the system
the capacitance of the system only
the inductance of the system only
the type of circuit breaker
both inductance and capacitance of the system
the capacitance of the system only
Answer
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