A. 6400 W
B. 1600 W
C. 800 W
D. 400 W
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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...
- Which of the following loss in a transformer is zero even at full load ____________?
- A. Core loss B. Friction loss C. Eddy current loss D. Hysteresis loss...
- 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...
- Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is_________________?
- A. approximately equal to one B. less than one C. great than one D. none of the above...
- If R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be___________?
- A. R2/VK B. R2IK2 C. R22!K2 D. R22/K...
- 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...
- The efficiency of two identical transformers under load conditions can be determined by_______________?
- A. short-circuit test B. back-to-back test C. open circuit test D. any of the above...
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