engineering recuitment MAHATRANSCO AE Electrical Mock Test Electrical Machines Alternator and Synchronous Motors
Consider the following statements with regard to the synchronous machine.
1. Damper windings are used to prevent hunting.
2. Synchronous reactance (Xs) calculated at higher exciting currents is larger than that at lower excitations.
3. Synchronous motors are preferred for driving loads requiring high power at low speeds.
4. Star delta starters are used to start synchronous motors.
The correct statements are
1
1, 3
2
1, 4
3
2, 3
4
2, 3, 4
5
1, 2, 3