A. Core loss
B. Friction loss
C. Eddy current loss
D. Hysteresis loss
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Related Mcqs:
- In an actual transformer the iron loss remains practically constant from no load to full load because:____________?
- A. value of transformation ratio remains constant B. permeability of transformer core remains constant C. core flux remains practically constant D. primary voltage remains constant C. secondary voltage remains constant...
- The full-load copper loss of a trans¬former is 1600 W. At half-load, the copper loss will be___________?
- A. 6400 W B. 1600 W C. 800 W D. 400 W...
- The no-load current drawn by transformer is usually what per cent of the full-load current ?
- A. 0.2 to 0.5 per cent B. 2 to 5 per cent C. 12 to 15 per cent D. 20 to 30 per cent...
- 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...
- 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...
- A transformer can have zero voltage regulation at______________?
- A. leading power factor B. lagging power factor C. unity power factor D. zero power factor...
- Hysteresis loss in a transformer varies as CBmax = maximum flux density) ?
- A. Bmax B. Bmax1-6 C. Bmax1-83 D. B max...
- 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...
- Iron loss of a transformer can be measured by____________?
- A. low power factor wattmeter B. unity power factor wattmeter C. frequency meter D. any type of wattmeter...
- 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...
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