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Electrical machines miscellaneous

Electrical Machines

  1. If hysteresis loop of a magnetic material has an area of 5 cm2 with the scales given as 1 cm = 2 AT and 1 cm = 50 mWb. At 50 Hz, then total hysteresis loss is _______ W .
    1. 2.5 W
    2. 5 W
    3. 15 W
    4. 25 W
Correct Option: D

Given : Area of the loop = 5 cm2
f = 50 Hz

∴ Hystirisis loss , Ph = 5 × 2 × 50 × f × 10– 3 W
= 5 × 2 × 50 × 50 × 10– 3 W = 25 W.



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