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SSC JE ELECTRICAL
ssc MCQs with answers - Part 12
1. The bedding of a cable consist of ? -jute -hessian cloth -Both jute and hessian cloth -None of these Answer: Both jute and hessian cloth Explanation: The bedding of a cable consist of Both jute and hessian cloth 2. Setting depth of poles is ? -1/4 part of the length of pole -1/5 part of the length of pole -1/8 part of the length of pole -1/2 part of the length of pole Answer: 1/5 part of the length of pole Explanation: 1/5 part of the length of pole 3. The protective device which will not open the circuit even after 4 h when the current is 1.5 times the excess of the rated current will be ? -HRC fuses HRC -cartridge fuses -circuit breakers -rewirable fuses Answer: rewirable fuses Explanation: The protective device which will not open the circuit even after 4 h when the current is 1.5 times the excess of the rated current will be rewirable fuses 4. Power factor of fluorescent lamp is about ? -zero -0.5 lead -unity -0.5 lag Answer: 0.5 lag Explanation: Power factor of fluorescent lamp is about 0.5 lag 5. Which type of fire extinguisher in not suitable for electric fire ? -foam extinguisher -carbon dioxide extinguisher -Soda acid extinguisher -dry powder extinguisher Answer: Soda acid extinguisher Explanation: Soda acid extinguisher type of fire extinguisher in not suitable for electric fire 6. Fuse is inserted series in the circuit and protect the equipment from ? -High voltage --High current -High power -High energy Answer: High current Explanation: Fuse is inserted series in the circuit and protect the equipment from High current 7. In which portion of the transmission system faults occur most frequently ? -under ground cables -transformers -over head lines -alternators Answer: over head lines Explanation: In over head lines portion of the transmission system faults occur most frequently 8. Which connect the consumer's terminals to the distribution ? --distributors -service mains -feeder -substation Answer: service mains Explanation: service mains connect the consumer's terminals to the distribution. 9. The earth pit should not be located near ? -roads -rail tracks -pavements -all option are correct Answer: all option are correct Explanation: The earth pit should not be located near roads, rail tracks & pavements. 10. What will happen if field winding is disconnected accidentally from rotating dc shunt motor ? -motor suddenly off -motor will run normally -motor will run dangerously -any of the above Answer: motor will run dangerously Explanation: if field winding is disconnected accidentally from rotating dc shunt motor motor will run dangerously. | ||
