In an electro-mechanical energy conversion device, which of the following statements are correct regarding the coupling

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(i) electrical side is associated with emf and current
(ii) electrical side is associated with torque and speed
(iii) mechanical side is associated with emf and current
(iv) mechanical side is associated with torque and speed
Check this: Electrical Engineering MCQs | Electrical & Electronics Engineering MCQs
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a) (i) & (ii)
b) (ii) & (iii)
c) (iii) & (iv)
d) (i) and (iv)