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In a split phase motor
- a)the starting winding is connected through a centrifugal switch
- b)the running winding is connected through a centrifugal switch
- c)both starting and running windings are connected through a centrifugal switch
- d)centrifugal switch is used to control supply voltage
Correct answer is option 'A'. Can you explain this answer?
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In a split phase motora)the starting winding is connected through a ce...
Split Phase Motor and Centrifugal Switch
Split phase motors are single-phase induction motors that have two windings - a starting winding and a running winding. These windings are placed at right angles to each other and are connected to the main winding of the motor. The starting winding has more turns, and it is also smaller in size than the running winding.
Centrifugal switch is an electro-mechanical device that is used to open or close an electrical circuit based on the rotational speed of a shaft or rotor. In split phase motors, a centrifugal switch is used to disconnect the starting winding from the power supply once the motor has reached a certain speed.
Answer Explanation
The correct option is 'A' - the starting winding is connected through a centrifugal switch.
When a split phase motor is started, both the starting and running windings are energized. The starting winding produces a magnetic field that is shifted by 90 degrees from the magnetic field produced by the running winding. This results in a rotating magnetic field that causes the rotor to start rotating.
Once the motor has reached around 70-80% of its rated speed, the centrifugal switch opens and disconnects the starting winding from the power supply. This is necessary because if the starting winding remains energized, it will produce a magnetic field that will interfere with the magnetic field produced by the running winding. This will cause the motor to overheat and eventually fail.
Therefore, the centrifugal switch is used to prevent this from happening by disconnecting the starting winding once the motor is up to speed. The running winding then takes over and continues to produce the rotating magnetic field that drives the motor.
In summary, the correct option is 'A' because the centrifugal switch is used to connect and disconnect the starting winding from the power supply in a split phase motor.
Split phase motors are single-phase induction motors that have two windings - a starting winding and a running winding. These windings are placed at right angles to each other and are connected to the main winding of the motor. The starting winding has more turns, and it is also smaller in size than the running winding.
Centrifugal switch is an electro-mechanical device that is used to open or close an electrical circuit based on the rotational speed of a shaft or rotor. In split phase motors, a centrifugal switch is used to disconnect the starting winding from the power supply once the motor has reached a certain speed.
Answer Explanation
The correct option is 'A' - the starting winding is connected through a centrifugal switch.
When a split phase motor is started, both the starting and running windings are energized. The starting winding produces a magnetic field that is shifted by 90 degrees from the magnetic field produced by the running winding. This results in a rotating magnetic field that causes the rotor to start rotating.
Once the motor has reached around 70-80% of its rated speed, the centrifugal switch opens and disconnects the starting winding from the power supply. This is necessary because if the starting winding remains energized, it will produce a magnetic field that will interfere with the magnetic field produced by the running winding. This will cause the motor to overheat and eventually fail.
Therefore, the centrifugal switch is used to prevent this from happening by disconnecting the starting winding once the motor is up to speed. The running winding then takes over and continues to produce the rotating magnetic field that drives the motor.
In summary, the correct option is 'A' because the centrifugal switch is used to connect and disconnect the starting winding from the power supply in a split phase motor.
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In a split phase motora)the starting winding is connected through a ce...
The starting winding is connected through a centrifugal switch
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In a split phase motora)the starting winding is connected through a centrifugal switchb)the running winding is connected through a centrifugal switchc)both starting and running windings are connected through a centrifugal switchd)centrifugal switch is used to control supply voltageCorrect answer is option 'A'. Can you explain this answer?
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