Over voltage protection is recommended for
A. hydro-electric generators
B. steam turbine generators
C. gas turbine generators
D. all of the above
E. none of the above
Answer: Option D
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Related Questions on Switchgear Protections
Magnetic circuit breaker has ______ trip action.
A. delayed
B. instantaneous
C. both of the above
D. none of the above
In a circuit breaker the basic problem is to
A. maintain the arc
B. extinguish the arc
C. transmit large power
D. emit the ionizing electrons
The arcing contacts in a circuit breaker are made of
A. copper tungsten alloy
B. porcelain
C. electrolytic copper
D. aluminium alloy
Air blast circuit breaker is used for
A. over currents
B. short duty
C. intermittant duty
D. repeated duty
over voltage protection not recommanded in steam turbine bcz its control governor are very sensitive
over voltage protection used in hydro and gas turbine.
ref. switch gear and protection by J.B.GUPTA
chapter 11(part iii) topic 11.5 page no 246