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MCQs 1: The usual spans with R.C.C. poles are_______________?

40—50 meters 60—100 meters 80—100 meters 300—500 meters
Answer Explanation

MCQs 2: Galvanised steel wire is generally used as______________?

stay wire earth wire structural components all of the above
Answer Explanation

MCQs 3: Which of the following materials is not used for transmission and distribution of electrical power________________?

Copper Aluminium Steel Tungsten
Answer Explanation

MCQs 4: The wooden poles well impregnated with creosite oil or any preservative compound have life_____________?

from 2 to 5 years 10 to 15 years 25 to 30 years 60 to 70 years
Answer Explanation

MCQs 5: If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as___________________?

Kelvin’s law Ohm’s law Kirchhoffs law Faraday’s law none of the above
Answer Explanation

MCQs 6: Overhead system can be designed for operation up to____________?

11 kV 33 kV 66 kV 400 kV
Answer Explanation

MCQs 7: The underground system cannot be operated above_________________?

440 V 11 kV 33 kV 66 kV
Answer Explanation

MCQs 8: _______________are the conductors, which connect the consumer’s terminals to the distribution?

Distributors Service mains Feeders None of the above
Answer Explanation

MCQs 9: By which of the following systems electric power may be transmitted ?

Overhead system Underground system Both A. and (b) None of the above
Answer Explanation

MCQs 10: When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?

Current will flow to earth Supply voltage will drop Supply voltage will increase No current will flow in the conductor None of the above
Answer Explanation

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