The speed of a synchronous motor Options: A . &nbspincreases as the load increases B . &nbspdecreases as the load decreases C . &nbspalways remains constant D . &nbspnone of the above

The speed of a synchronous motor

Question

The speed of a synchronous motor

Options:

A . increases as the load increases

B . decreases as the load decreases

C . always remains constant

D . none of the above

Answer: Option C

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Question 1. In a synchronous motor, the breakdown torque is....

Question 2. The angle between the rotating stator flux and rotor poles is called _____ angle.....

Question 3. A 3-phase synchronous motor is running clockwise. If the direction of its field current is reversed....

Question 4. Due to which of the following reasons a synchronous motor fails to pull into synchronism after applying D.C. field curre....fails to pull into synchronism after applying D.C. field current?

Question 5. When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars ....than the synchronous speed during hunting, the damper bars develop

Question 6. The working of a synchronous motor is similar to....

Question 7. Power factor of a synchronous motor is unity when....

Question 8. In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole number and load torque all are halved. The motor spee....load torque all are halved. The motor speed will be

Question 9. Which of the following motors is non-self starting ?....

Question 10. Which of the following losses, in a synchronous motor, does not vary with load?....

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