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The synchronous motor is:
- a)Not a self-starting machine and does not run at synchronous speed
- b)A self-starting machine and does not run at synchronous speed
- c)Not a self-starting machine and runs at synchronous speed
- d)A self-starting machine and runs at synchronous speed
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The synchronous motor is:a)Not a self-starting machine and does not ru...
The synchronous motor is a constant speed motor and it always runs as at synchronous speed.
Due to the magnetic locking between stator and rotor poles synchronous motor is not self-starting and there is no starting device to accelerate the rotor to near synchronous speed.
It can be made self-starting by providing damper windings on rotor poles or by using pony motors.
Most Upvoted Answer
The synchronous motor is:a)Not a self-starting machine and does not ru...
Explanation:
Synchronous Motor:
A synchronous motor is a type of AC motor that operates at a constant speed determined by the frequency of the power source.
Characteristics of a Synchronous Motor:
- A synchronous motor is not a self-starting machine. It requires some external means to bring it up to synchronous speed before it can start running.
- Once the motor is brought up to synchronous speed, it will continue to run at that speed as long as the frequency of the power source remains constant.
Running at Synchronous Speed:
- Synchronous speed is the speed at which the motor's rotor rotates in synchronism with the rotating magnetic field produced by the stator windings.
- In the case of a synchronous motor, once it is brought up to synchronous speed, it will run at that speed, making it ideal for applications where precise speed control is required.
Conclusion:
Therefore, the correct answer is option 'C': a synchronous motor is not a self-starting machine but runs at synchronous speed once brought up to that speed.
Synchronous Motor:
A synchronous motor is a type of AC motor that operates at a constant speed determined by the frequency of the power source.
Characteristics of a Synchronous Motor:
- A synchronous motor is not a self-starting machine. It requires some external means to bring it up to synchronous speed before it can start running.
- Once the motor is brought up to synchronous speed, it will continue to run at that speed as long as the frequency of the power source remains constant.
Running at Synchronous Speed:
- Synchronous speed is the speed at which the motor's rotor rotates in synchronism with the rotating magnetic field produced by the stator windings.
- In the case of a synchronous motor, once it is brought up to synchronous speed, it will run at that speed, making it ideal for applications where precise speed control is required.
Conclusion:
Therefore, the correct answer is option 'C': a synchronous motor is not a self-starting machine but runs at synchronous speed once brought up to that speed.
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The synchronous motor is:a)Not a self-starting machine and does not run at synchronous speedb)A self-starting machine and does not run at synchronous speedc)Not a self-starting machine and runs at synchronous speedd)A self-starting machine and runs at synchronous speedCorrect answer is option 'C'. Can you explain this answer?
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