61. |
Which of the following distribution system is not normally used?
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Answer:
Option (c) |
62. |
The approximate cost ration of 220 kV underground cable transmission and 220 kV over head transmission
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Answer:
Option (c) |
63. |
With the same maximum voltage to earth, which of the following AC system with 0.8 power factor will need more copper in comparison to DC 2-wire system
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Answer:
Option (d) |
64. |
With the same maximum voltage between conductor, the ratio of copper volumes needed in three phase, 3-wire system and single phase, 2-wire system is
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Answer:
Option (b) |
65. |
The main reason for using high voltage for long distance power transmission is
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Answer:
Option (a) |
66. |
The most economical voltage for transmission over given power for known distance by overhead transmission system is
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Answer:
Option (b) |
67. |
For transmission of power over a distance of 500 km, the transmission voltage should be
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Answer:
Option (d) |
68. |
66 kV is suitable for transmission power over
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Answer:
Option (b) |
69. |
3 MW power is transmitted over a distance of 30 km, the desirable transmission voltage is
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Answer:
Option (c) |