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By connecting reactances at the slip-ring leads of a rotary convertor operating at a iead big power factor, the output dc voltage can he raised if | |
A. | the pf is made less leading by reducing tue excitation. [Wrong Answer] |
B. | the pf is made more leading by increasing the excitation, [Correct Answer] |
C. | the pf is made more leading by reducing the excitation. [Wrong Answer] |
D. | the pf is made less lagging by increasing the excitation. [Wrong Answer] |