A. lkV
B. 33 kV
C. 100 kV
D. 330 kV
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Related Mcqs:
- The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer?
- A. Conservator B. Breather C. Bushings D. Buchholz relay...
- Gas is usually not liberated due to dissociation of transformer oil unless the oil temperature exceeds?
- A. 50°C B. 80°C C. 100°C D. 150°C...
- Which of the following is the main advantage of an auto-transformer over a two winding transformer?
- A. Hysteresis losses are reduced B. Saving in winding material C. Copper losses are negligible D. Eddy losses are totally eliminated...
- A transformer oil must be free from________________?
- A. sludge B. odour C. gases D. moisture...
- The transformer oil should have _______ volatility and _______ viscosity?
- A. low,low B. high,high C. low,high D. high,low...
- The efficiency of a transformer will be maximum when_____________?
- A. copper losses = hysteresis losses B. hysteresis losses = eddy current losses C. eddy current losses = copper losses D. copper losses = iron losses...
- The no load current in a transformer lags behind the applied voltage by an angle of about_____________?
- A. 180° B. 120″ C. 90° D. 75°...
- The main reason for generation of harmonics in a transformer could be_______________?
- A. fluctuating load B. poor insulation C. mechanical vibrations D. saturation of core...
- If the supply frequency to the transformer is increased,”the iron loss will__________?
- A. not change B. decrease C. increase D. any of the above...
- Part of the transformer which is most subject to damage from overheating is_____________?
- A. iron core B. copper winding C. winding insulation D. frame or case E. transformer tank...
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