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The main function of a fuse is to
prevent excessive currents
protect the line
protect the appliance
open the circuit
None of these
prevent excessive currents
protect the line
protect the appliance
open the circuit
None of these
Answer
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The information to the circuit breaker under fault conditions is provided by
relay
All of these
rewirable fuse
H.R.'only
relay
All of these
rewirable fuse
H.R.'only
Answer
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The power loss is an important factor for the design of
generator
feeder
motor
transmission line
generator
feeder
motor
transmission line
Answer
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Which of the following circuit breakers is prefered for EHT applications ?
low oil circuit breaker
air break circuit breaker
bulk oil circuit breaker
Sf6 CB
low oil circuit breaker
air break circuit breaker
bulk oil circuit breaker
Sf6 CB
Answer
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The reflection co-efficient at the open circuited end of a transmission line
infinity
None of these
unity
zero
infinity
None of these
unity
zero
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Which of the following is the least expensive protection for over current is low voltage system ?
air break circuit breaker
isolator
rewireable fuse
oil circuit breaker
air break circuit breaker
isolator
rewireable fuse
oil circuit breaker
Answer
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