railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Alternator and Synchronous Motors
Which statements about the maximum power output of a cylindrical rotor synchronous generator are correct?
I. Maximum power output occurs when the load angle (δ) is 90°.
II. Maximum power is proportional to the square of the terminal voltage (V).
III. Over-excitation increases the generator’s maximum power capability.
IV. Maximum power is independent of the synchronous reactance (Xs).
1
Statements I and III only are correct.
2
Statements II and IV only are correct.
3
Statements II and III only are correct.
4
Statements I and IV only are correct.