| 1. | The skin effect of a conductor will reduce as the ? | |
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resistivity of conductor material increases
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permeability of conductor material increases
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diameter increases
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frequency increases
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Report Question| 2. | Series capacitors on transmission lines are of little use when the load VAR requirement is ? | |
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large
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small
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fluctuating
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any of the above
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| 3. | Aluminium bas a specific gravity of ? | |
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1.5
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2. 7
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4.2
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7.8
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| 4. | The voltage drop, for constant voltage transmission is compensated by installing ? | |
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inductors
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capacitors
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synchronous motors
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all of above
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| 5. | A circuit is disconnected by isolators, when ? | |
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line is energized
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there is no current in the line
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line is on full load
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circuit breaker is not open
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| 6. | By which of the following a bus-bar is rated ? | |
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Current Only
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Current and Voltage
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Current Voltage and frequency
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Current Voltage and frequency and short time current
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| 7. | For which of the following equipment current rating is not necessary ? | |
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Circuit breakers
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Isolators
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Load break switch
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Circuit breakers and load break switches
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| 8. | The current drawn by the line due to corona losses is ? | |
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non-sinusoidal
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sinusoidal
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triangular
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square
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| 9. | For transmission of power over a distance of 500 km, the transmission voltage should be in the range ? | |
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150 to 220 kV
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100 to 120 kV
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60 to 100 kV
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20 to 50 kV
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| 10. | The voltage regulation in magnetic amplifier type voltage regulator ts effected by ? | |
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electromagnetic induction
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varying the resistance
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varying the reactance
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variable transformer
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