Q11. | In a D.C. 3-wire distribution system, balancer fields are cross-connected in order to |
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A. | boost the generated voltage [Wrong Answer] |
B. | balance loads on both sides of the neutral [Wrong Answer] |
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C. | make both machines run as unloaded motors [Wrong Answer] |
D. | equalize voltages on the positive and negative outers [Correct Answer] |
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Q12. | The power transmitted will be maximum when |
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A. | corona losses are minimum [Wrong Answer] |
B. | reactance is high [Wrong Answer] |
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C. | sending end voltage is more [Correct Answer] |
D. | receiving end voltage is more [Wrong Answer] |
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Q13. | Transmission voltage of 11 kV is normally used for distances upto |
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A. | 20-25 km [Correct Answer] |
B. | 40-50 km [Wrong Answer] |
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C. | 60-70 km [Wrong Answer] |
D. | 80-100 km [Wrong Answer] |
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Q14. | By which of the following a bus-bar is rated ? |
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A. | Current only [Wrong Answer] |
B. | Current and voltage [Wrong Answer] |
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C. | Current, voltage and frequency [Wrong Answer] |
D. | Current, voltage, frequency and short time current [Correct Answer] |
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Q15. | Aluminium has a specific gravity of | ||||||
A. | 1.5 [Wrong Answer] |
B. | 2.7 [Correct Answer] |
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C. | 4.2 [Wrong Answer] |
D. | 7.8 [Wrong Answer] |
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Q16. | In the analysis of which of the following lines shunt capacitance is neglected ? |
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A. | Short transmission lines [Correct Answer] |
B. | Medium transmission lines [Wrong Answer] |
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C. | Long transmission lines [Wrong Answer] |
D. | Medium as well as long transmission lines [Wrong Answer] |
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Q17. | The following system is not generally used |
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A. | 1-phase 3 wire [Wrong Answer] |
B. | 1-phase 4 wire [Correct Answer] |
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C. | 3-phase 3 wire [Wrong Answer] |
D. | 3-phase 4 wire [Wrong Answer] |
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Q18. | The top most conductor in a high transmission line is | ||||||
A. | earth conductor [Correct Answer] |
B. | R-phase conductor [Wrong Answer] |
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C. | Y-phase conductor [Wrong Answer] |
D. | B-phase conductor [Wrong Answer] |
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Q19. | In which of the following voltage regulators the effect of dead zero is found ? |
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A. | Electromagnetic type [Correct Answer] |
B. | Magnetic amplifier [Wrong Answer] |
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C. | Electronic type using integrated circuits [Wrong Answer] |
D. | All of the above [Wrong Answer] |
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Q20. | If string efficiency is 100 percent it means that |
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A. | potential across each disc is zero [Wrong Answer] |
B. | potential across each disc is same [Correct Answer] |
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C. | one of the insulator discs is shorted [Wrong Answer] |
D. | none of the above [Wrong Answer] |
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