The maximum speed variation in a 3-phase synchronous motor is Options: A . &nbsp10 per cent B . &nbsp6 per cent C . &nbsp4 per cent D . &nbsp2. per cent E . &nbspzero

The maximum speed variation in a 3-phase synchronous motor is

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The maximum speed variation in a 3-phase synchronous motor is

Answer: Option E

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Question 1. When load on an over-excited or under excited synchronous motor is increased, rate of change of its armature current as ....armature current as compared with that of power factor is

Question 2. A synchronous motor can be made self starting by providing....

Question 3. A synchronous machine with large air gap has....

Question 4. In a synchronous motor, the maximum power developed depends on all of the following except....

Question 5. By which of the following methods the constant speed of a synchronous motor can be changed to new fixed value ?....

Question 6. The duration of sudden short-circuit test on a synchronous motor is usually about....

Question 7. Hunting in a synchronous motor cannot be due to....

Question 8. In a 3-phase synchronous motor, the negative phase sequence exists when the motor is....

Question 9. As the load is applied to a synchronous motor, the motor takes more armature current because....

Question 10. An important advantage of a synchronous motor over wound round induction motor is that....

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