By which of the following methods the constant speed of a synchronous motor can be changed to new fixed value ? Options: A . &nbspBy changing the supply frequency B . &nbspBy interchanging any two phases C . &nbspBy changing the applied voltage D . &nbspBy changing the load

By which of the following methods the constant speed of a synchronous motor can

Question

By which of the following methods the constant speed of a synchronous motor can be changed to new fixed value ?

Options:

A . By changing the supply frequency

B . By interchanging any two phases

C . By changing the applied voltage

D . By changing the load

Answer: Option A

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Question 1. The duration of sudden short-circuit test on a synchronous motor is usually about....

Question 2. Hunting in a synchronous motor cannot be due to....

Question 3. In a 3-phase synchronous motor, the negative phase sequence exists when the motor is....

Question 4. As the load is applied to a synchronous motor, the motor takes more armature current because....

Question 5. An important advantage of a synchronous motor over wound round induction motor is that....

Question 6. The power factor of a synchronous motor is better than that of induction motor because....

Question 7. In case one phase of a three-phase synchronous motor is short-circuited the motor will....

Question 8. An over excited synchronous motor is used for....

Question 9. Riunting in a synchronous motor takes place....

Question 10. The rotor copper losses, in a synchronous motor, are met by....

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