| 1. | The wooden poles well impregnated with creosite oil or any preservative compound have life ? | |
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from 2 to 5 years
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10 to 15 years
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25 to 30 years
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60 to 70 years
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Report Question| 2. | Low voltage cables are meant for use up to ? | |
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1.1 kV
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3.3kV
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6.6 kV
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11 kV
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| 3. | A booster is a ? | |
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series wound generator
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shunt wound generator
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synchronous generator
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none of the above
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| 4. | Distribution lines in India generally use ? | |
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wooden poles
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steel towers
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R.C.C. poles
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none of the above
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| 5. | The material generally used for armour of high voltage cables is ? | |
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aluminium
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steel
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brass
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copper
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| 6. | A uniformly-loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is ? | |
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one-fourth
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one-third
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one-half
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twice
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| 7. | The power transmitted will be maximum when ? | |
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corona losses are minimum
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reactance is high
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sending end voltage is more
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receiving end voltage is more
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| 8. | There is a greater possibility of occurence of corona during ? | |
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dry weather
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winter
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summer heat
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humid weather
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| 9. | Which of the following regulations is considered best ? | |
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50%
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20%
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10%
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2%
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| 10. | Which of the following bus-bar schemes has the lowest cost ? | |
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Ring bus-bar scheme
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Single bus-bar scheme
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Breaker and a half scheme
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Main and transfer scheme
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