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To reverse the direction of rotation of a capacitor start motor while it is running, we should
  • a)
    disconnect the motor from the supply till it stops then reconnect it to supply with the reversed connection of main or auxiliary winding
  • b)
    disconnect the motor from the supply and immediately reconnect it to supply with reversed connections of the main winding
  • c)
    reverse the direction of connection of the auxiliary winding and after motor comes to rest then connect auxiliary winding to the supply
  • d)
    reverse the direction of connections of the auxiliary winding and immediately connect it to supply
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
To reverse the direction of rotation of a capacitor start motor while...
The direction of rotation of a capacitor start motor can be reversed by reversing the connection of the main winding or auxiliary winding.
To reverse the direction of rotation of a capacitor start motor while it is running, we should disconnect the motor from the supply till it stops then reconnect it to supply with the reversed connection of main or auxiliary winding.
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To reverse the direction of rotation of a capacitor start motor while...
Explanation:

To reverse the direction of rotation of a capacitor start motor while it is running, the correct option is to disconnect the motor from the supply till it stops, and then reconnect it to the supply with the reversed connection of the main or auxiliary winding. Let's understand why this is the correct option:

Capacitor Start Motor:
A capacitor start motor is a type of single-phase induction motor that uses a capacitor to start rotating. It consists of a main winding and an auxiliary winding, both of which are connected to the capacitor. The main winding is designed for continuous operation, while the auxiliary winding is used only during the starting phase.

Reversing the Direction of Rotation:
To reverse the direction of rotation of a capacitor start motor, we need to reverse the direction of the magnetic field produced by the motor. This can be achieved by reversing the connection of either the main winding or the auxiliary winding.

Option A: Disconnect the Motor and Reconnect with Reversed Connection:
This option involves disconnecting the motor from the supply until it stops and then reconnecting it to the supply with the reversed connection of the main or auxiliary winding. Here's how it works:

1. When the motor is running, the main winding and the auxiliary winding are both energized, producing a rotating magnetic field.
2. By disconnecting the motor from the supply, the magnetic field will gradually decay, causing the motor to come to a stop.
3. Once the motor has stopped, the connection of either the main winding or the auxiliary winding can be reversed.
4. Reconnecting the motor to the supply with the reversed connection will result in a reversed magnetic field, effectively reversing the direction of rotation of the motor.

Other Options:
Option B suggests immediately reconnecting the motor to the supply with reversed connections of the main winding. This is not recommended as the motor needs time to come to a complete stop before reversing the winding connections.

Option C suggests reversing the direction of connection of the auxiliary winding and connecting it to the supply after the motor comes to rest. This option may not provide the desired result as the auxiliary winding alone may not be sufficient to start the motor in the reverse direction.

Option D suggests reversing the direction of connections of the auxiliary winding and immediately connecting it to the supply. This option is not recommended as it does not allow the motor to come to a complete stop before reversing the winding connections.

Therefore, the correct option is A, which involves disconnecting the motor from the supply till it stops and then reconnecting it to the supply with the reversed connection of the main or auxiliary winding.
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To reverse the direction of rotation of a capacitor start motor while it is running, we shoulda)disconnect the motor from the supply till it stops then reconnect it to supply with the reversed connection of main or auxiliary windingb)disconnect the motor from the supply and immediately reconnect it to supply with reversed connections of the main windingc)reverse the direction of connection of the auxiliary winding and after motor comes to rest then connect auxiliary winding to the supplyd)reverse the direction of connections of the auxiliary winding and immediately connect it to supplyCorrect answer is option 'A'. Can you explain this answer?
Question Description
To reverse the direction of rotation of a capacitor start motor while it is running, we shoulda)disconnect the motor from the supply till it stops then reconnect it to supply with the reversed connection of main or auxiliary windingb)disconnect the motor from the supply and immediately reconnect it to supply with reversed connections of the main windingc)reverse the direction of connection of the auxiliary winding and after motor comes to rest then connect auxiliary winding to the supplyd)reverse the direction of connections of the auxiliary winding and immediately connect it to supplyCorrect answer is option 'A'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about To reverse the direction of rotation of a capacitor start motor while it is running, we shoulda)disconnect the motor from the supply till it stops then reconnect it to supply with the reversed connection of main or auxiliary windingb)disconnect the motor from the supply and immediately reconnect it to supply with reversed connections of the main windingc)reverse the direction of connection of the auxiliary winding and after motor comes to rest then connect auxiliary winding to the supplyd)reverse the direction of connections of the auxiliary winding and immediately connect it to supplyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for To reverse the direction of rotation of a capacitor start motor while it is running, we shoulda)disconnect the motor from the supply till it stops then reconnect it to supply with the reversed connection of main or auxiliary windingb)disconnect the motor from the supply and immediately reconnect it to supply with reversed connections of the main windingc)reverse the direction of connection of the auxiliary winding and after motor comes to rest then connect auxiliary winding to the supplyd)reverse the direction of connections of the auxiliary winding and immediately connect it to supplyCorrect answer is option 'A'. Can you explain this answer?.
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