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Outdoor switchgear is generally used for voltage beyond
132 kV
11 kV
33 kV
66 kV
132 kV
11 kV
33 kV
66 kV
Answer
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Related Question
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Which of the following circuit breakers is prefered for EHT applications ?
low oil circuit breaker
bulk oil circuit breaker
Sf6 CB
air break circuit breaker
low oil circuit breaker
bulk oil circuit breaker
Sf6 CB
air break circuit breaker
Answer
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The rate of rise of restriking voltage depends on
both inductance and capacitance of the system
the inductance of the system only
the capacitance of the system only
the type of circuit breaker
both inductance and capacitance of the system
the inductance of the system only
the capacitance of the system only
the type of circuit breaker
Answer
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The arc voltage produced in AC circuit breaker is always
In phase with the arc current
None of these
lagging the arc current by 90°
leading the arc current by 90°
In phase with the arc current
None of these
lagging the arc current by 90°
leading the arc current by 90°
Answer
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The rating of a circuit breaker is generally determined on the basis of
line to line fault current
double line to ground fault current
symmetrical fault current
single line to ground fault current
line to line fault current
double line to ground fault current
symmetrical fault current
single line to ground fault current
Answer
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For which of the following protection from negative sequence currents is provided ?
Transmission line
Motors
Transformers
Generators
Transmission line
Motors
Transformers
Generators
Answer
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