Which of the above statements are correct?
A. (i),(iii),(vi)
B. (ii),(iv),(v)
C. (i),(ii),(iii)
D. (iv),(v),(vi)
Answer:A
Which of the above statements are correct?
A. (i),(iii),(vi) B. (ii),(iv),(v) C. (i),(ii),(iii) D. (iv),(v),(vi)
Explanation: The machine efficiency rises with load. but at a particular load, efficiency is maximum and beyond this load, efficiency diminishes. Also, for both motors and generators, machine efficiency is maximum when variable loss = constant loss. 11. The electromechanical energy conversion devices used in power systems are never operated to deliver maximum power output, because at maximum power output, _____________