| 1. | Which of the following D.C. distribution system is the simplest and lowest in first cost ? | |
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Radial system
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Ring system
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Inter-connected system
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None of the above
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Report Question| 2. | By which of the following systems electric power may be transmitted ? | |
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Overhead system
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Underground system
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Both (a) and (b)
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None of the above
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| 3. | The spacing between phase conductors of a 220 kV line is approximately equal to ? | |
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2 m
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3.5 m
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6 m
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8.5 m
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| 4. | Large industrial consumers are supplied electrical energy at ? | |
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400 V
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11 kV
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66 kV
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400 kV
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| 5. | Large industrial consumers are supplied electrical energy at ? | |
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400 V
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11 kV
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66 kV
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400 kV
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| 6. | Large industrial consumers are supplied electrical energy at ? | |
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400 V
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11 kV
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66 kV
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400 kV
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| 7. | Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is ? | |
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25 percent
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75 percent
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50 percent
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100 percent
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| 8. | In context of corona, if the conductors are polished and smooth, which of the following statements is correct ? | |
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Hissing sound will be more intense
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Power loss will be least
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Corona glow will be uniform along the length of the conductor
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Corona glow will not occur
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| 9. | On which of the following does the size of a feeder depend ? | |
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Voltage drop
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Voltage
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Frequency
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Current carrying capacity
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| 10. | Basically the boosters are ? | |
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synchronous motors
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capacitors
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inductors
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transformers
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