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Which of the following circuit breakers is prefered for EHT applications ?
low oil circuit breaker
Sf6 CB
bulk oil circuit breaker
air break circuit breaker
low oil circuit breaker
Sf6 CB
bulk oil circuit breaker
air break circuit breaker
Answer
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Related Question
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A fuse should have
low melting point
low cost
All of these
high conductivity
low melting point
low cost
All of these
high conductivity
Answer
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A three phase circuit breaker is rated at 2000 MVA, 33 kv. The symmetrical breaking current is
80 kA
60 kA
35 kA
20 kA
80 kA
60 kA
35 kA
20 kA
Answer
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A fuse is a
protective device
current limiting device
current controlling device
None of these
protective device
current limiting device
current controlling device
None of these
Answer
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The power loss is an important factor for the design of
feeder
transmission line
generator
motor
feeder
transmission line
generator
motor
Answer
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Which of the following is the least expensive protection for over current is low voltage system ?
isolator
rewireable fuse
oil circuit breaker
air break circuit breaker
isolator
rewireable fuse
oil circuit breaker
air break circuit breaker
Answer
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