| 1. | High voltages for transmitting power is economically available from ? | |
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d.c. currents
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a.c. currents
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carrier currents
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none of the above
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Report Question| 2. | A synchronous condenser is generally installed at the of the transmission line ? | |
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receiving end
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sending end
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middle
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none of the above
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| 3. | Power system stability is least affected by ? | |
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reactance of generator
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input torque
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losses
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reactance of transmission line
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| 4. | By using bundle conductors, the critical voltage for the formation of corona will ? | |
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remain same
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decrease
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increase
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not occur
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| 5. | System grounding is done so that ? | |
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inductive interference between power and communication circuits can be controlled
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the floating potential on the lower voltage winding for a transformer is brought down to an insignificant value
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the arcing faults to earth would not set up dangerously high voltage on healthy phases
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for all above reasons
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| 6. | The area of cross-section of the neutral in a 3-wire D.C. system is generally the area of cross-section of main conductor ? | |
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same as
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one-fourth
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one half
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double
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| 7. | For which of the following, the excitation control method is satisfactory ? | |
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Low voltage lines
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High voltage lines
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Short lines
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Long lines
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| 8. | Which of the following is neglected in the analysis of short transmission lines ? | |
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Series impedance
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Shunt admittance
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J2R loss
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None of the above
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| 9. | 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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| 10. | 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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