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A polyphase induction motor of the slip ring or wound rotor type can be used ____________
  • a)
    for high start-up torque applications
  • b)
    as a frequency converter
  • c)
    any of the mentioned
  • d)
    none of the mentioned
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A polyphase induction motor of the slip ring or wound rotor type can b...
A polyphase induction motor can be used as a frequency converter (or changer) for changing the supply frequency f to other frequencies sf and (2-s)f at the slip ring terminals.
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Most Upvoted Answer
A polyphase induction motor of the slip ring or wound rotor type can b...


High start-up torque applications:
A polyphase induction motor of the slip ring or wound rotor type can be used for high start-up torque applications where the motor needs to overcome initial inertia and resistance. The ability to adjust the rotor resistance in these types of motors allows for higher torque production during start-up, making them suitable for applications like conveyor belts, crushers, and pumps.

Frequency converter:
These types of motors can also be used as frequency converters by varying the rotor resistance to control the speed of the motor. By changing the frequency of the input power and adjusting the rotor resistance, the speed of the motor can be controlled to match the requirements of the specific application. This makes them suitable for applications like crane drives, wind turbines, and rolling mills.

Conclusion:
In conclusion, a polyphase induction motor of the slip ring or wound rotor type can be used for a variety of applications that require high start-up torque or frequency conversion capabilities. Their ability to adjust rotor resistance makes them versatile and suitable for a wide range of industrial applications.
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A polyphase induction motor of the slip ring or wound rotor type can be used ____________a)for high start-up torque applicationsb)as a frequency converterc)any of the mentionedd)none of the mentionedCorrect answer is option 'C'. Can you explain this answer?
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