A. core
B. windings
C. tank
D. any of the above
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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...
- For a transformer, operating at constant load current, maximum efficiency will occur at______________?
- A. 0.8 leading power factor B. 0.8 lagging power factor C. zero power factor D. unity power factor...
- 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...
- Losses which occur in rotating electric machines and do not occur in transformers are___________?
- A. friction and windage losses B. magnetic losses C. hysteresis and eddy current losses D. copper losses...
- 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 maximum efficiency of a distribution transformer is____________?
- A. at no load B. at 50% full load C. at 80% full load D. at full load...
- Hysteresis loss in a transformer varies as CBmax = maximum flux density) ?
- A. Bmax B. Bmax1-6 C. Bmax1-83 D. B max...
- An ideal transformer will have maximum efficiency at a load such that?
- A. copper loss = iron loss B. copper loss iron loss D. none of the above...
- The maximum load that a power transformer can carry is limited by its________________?
- A. temperature rise B. dielectric strength of oil C. voltage ratio D. copper loss...
- 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...
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