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SF 6 gas
has pungent small
Is nontoxic
is lighter than air
is yellow in colour
has pungent small
Is nontoxic
is lighter than air
is yellow in colour
Answer
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Related Question
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Arc in a circuit breaker behaves as
a resistance decreasing with voltage rise across the arc
a capacitive reactance
an inductive reactance
a resistance increasing with voltage rise across the arc
a resistance decreasing with voltage rise across the arc
a capacitive reactance
an inductive reactance
a resistance increasing with voltage rise across the arc
Answer
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Directional relay are based on flow of
current
voltage wave
All of these
power
current
voltage wave
All of these
power
Answer
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When the circuit breaker operates under fault conditions, the greatest noise is produced in
sf6 circuit breaker
oil circuit breaker
vaccum circuit breaker
air-blast circuit breaker
sf6 circuit breaker
oil circuit breaker
vaccum circuit breaker
air-blast circuit breaker
Answer
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Most of the relays on service on electric power system are
electro-mechanical relays
None of these
thermal relays
electronic relays
electro-mechanical relays
None of these
thermal relays
electronic relays
Answer
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The rating of a circuit breaker is generally determined on the basis of
double line to ground fault current
single line to ground fault current
line to line fault current
symmetrical fault current
double line to ground fault current
single line to ground fault current
line to line fault current
symmetrical fault current
Answer
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