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1. |
If φsh is flux of shunt magnet, φse is flux of series magnet, ish is eddy current due to φse, the torque in an induction wattmeter is proportional to |
A. | φse ise + φsh ish |
B. | φsh ise - φse ish |
C. | φsh ish - φse ise |
D. | φsh ish + φse ise |
Answer» C. φsh ish - φse ise | |