| 1. | The charging current in the cables ? | |
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leads the voltage by 180º
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leads the voltage by 90º
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lags the voltage by 90º
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lags the voltage by 180º
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Report Question| 2. | Which of the following short-circuits is most dangerous ? | |
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Dead short-circuit
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Line to ground short-circuit
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Line to line short-circuit
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Line to line and ground short-circuit
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| 3. | The effect of wind pressure is more predominant on ? | |
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supporting towers
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neutral wires
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transmission lines
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insulators
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| 4. | If the height of transmission tower is increased, which of the following parameters is likely to change ? | |
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Capacitance
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Inductance
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Resistance
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All of the above
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| 5. | Skin effect is noticeable only at frequencies ? | |
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audio
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low
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high
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all
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| 6. | The purpose of using a booster is to ? | |
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increase current
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reduce current
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reduce voltage drop
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compensate for voltage drop
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| 7. | With which of the following are step-up substations associated ? | |
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Concentrated load
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Consumer location
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Distributors
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Generating stations
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| 8. | In which of the following voltage regulators the effect of dead zero is found ? | |
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Electromagnetic type
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Magnetic amplifier
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Electronic type using integrated circuits
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All of the above
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| 9. | By which of the following methods voltage of transmission can be regulated ? | |
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Use of series capacitors to neutralise the effect of series reactance
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Switching in shunt capacitors at the receiving end during heavy loads
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Use of tap changing transformers
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Any of the above methods
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| 10. | The conductors are bundled primarily to ? | |
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increase reactance
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reduce reactance
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reduce radio interference
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none of the above
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