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Switchgear Protections - Interview Questions and Answers

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86. A switchgear is device used for
A. interrupting an electrical circuit
B. switching an electrical circuit 111.
C. switching and controlling an electri�cal circuit
D. switching, controlling and protect�ing the electrical circuit and equipment
Explanation:
87. The power loss is an important factor for the design of
A. transmission line
B. motor
C. generator
D. feeder
Explanation:
88. Over voltage protection is recommended for
A. hydro-electric generators
B. steam turbine generators
C. gas turbine generators
D. all of the above
Explanation:
89. The arcing contacts in a circuit breaker are made of
A. copper tungsten alloy
B. porcelain
C. electrolytic copper
D. aluminium alloy
Explanation:
90. The fuse wire, in D.C. circuits, is inserted in
A. negative circuit only
B. positive circuit only
C. both (a) and (b)
D. either (a) or (b)
Explanation:
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