Switchgear And Protection | Switchgear And Protection Objective Type Questions and answers
41. Hey switchgear is device used for
A. Interrupting an electrical circuit
B. Switching an electrical circuit
C. Reaching and controlling an electrical circuit
D. Switching, controlling and protecting the electrical circuit and equipment
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D. Switching, controlling and protecting the electrical circuit and equipment
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42. Switching over voltage arc are more hazardous than lighting surges in case of
A. Unbalanced systems
B. Low-voltages
C. 11 KV systems
D. EHV and UHV systems
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43. Least number of faults are generally reported for
A. Transmission lines
B. Cables
C. Switchgears
D. Transformers
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44. Minimum working voltage will be least in case of
A. Silver
B. Graphite
C. Carbon
D. Tungsten
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45. In a contactor, interrupting medium may be
A. Air
B. Oil
C. Sf6 gas
D. Any of the above
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