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Electrical Engineering : Switchgear Protections QUESTIONS AND ANSWERS :: part1 : 11 to 15
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.SF6 gas |
is yellow in colour |
is lighter than air |
is nontoxic |
has pungent small |
12.Circuit breakers usually operate under |
transient state of short-circuit current |
sub-transient state of short-circuit current |
steady state of short-circuit current |
after D.C. component has ceased |
13.D.C. shunt relays are made of |
few turns of thin wire |
few turns of thick wire |
many turns of thin wire |
many turns of thick wire |
14.Burden of a protective relay is the power |
required to operate the circuit breaker |
absorbed by the circuit of relay |
developed by the relay circuit |
none of the above |
15.In order that current should flow without causing excessive heating or voltage drop, the relay contacts should |
have low contact resistance |
be clean and smooth |
be of sufficient size and proper shape |
have all above properties |
More Switchgear Protections QUESTIONS AND ANSWERS available in next pages
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Health is the greatest gift, contentment is the greatest wealth -Buddha
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