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What does happen if tripled harmonics given to induction motor?
- a)Will results in short circuit
- b)Fail to start
- c)Nothing will happen
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
What does happen if tripled harmonics given to induction motor?a)Will ...
When a sinusoidal input is applied to electronic circuit the output is distorted wave form. This distorted wave is because of nonlinear characteristics of electronic circuit. Those distorted wave is called harmonics. The component having triple times of the fundamental are known as third harmonics. Generally all third harmonics are equal in all phases.
When these harmonics is applied to induction motor, it will fail to start because rotating magnetic field won’t develop.
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What does happen if tripled harmonics given to induction motor?a)Will ...
Understanding Tripled Harmonics in Induction Motors
Tripled harmonics can significantly impact the performance of an induction motor. Here's how:
What are Tripled Harmonics?
- Tripled harmonics refer to the frequencies that are three times the fundamental frequency.
- In a typical 60 Hz system, this would correspond to 180 Hz.
Effects of Tripled Harmonics on Induction Motors
- Induction motors are designed to operate efficiently at their rated frequency.
- Introducing tripled harmonics alters the voltage and current waveforms.
Reasons Induction Motors Fail to Start
- Increased Heating: Tripled harmonics lead to increased losses in the windings, generating excessive heat.
- Torque Ripple: The presence of these harmonics causes a non-uniform magnetic field, resulting in uneven torque production.
- Reduced Starting Torque: The motor may lack sufficient starting torque due to distorted current, making it unable to overcome inertia.
Conclusion
- While tripled harmonics do not directly cause a short circuit (a) or result in no effect (c), they can severely impair the motor's ability to start (b).
- Therefore, the correct answer is that the induction motor will fail to start when subjected to tripled harmonics.
Understanding these effects is crucial for preventing operational issues and ensuring the longevity of induction motors in industrial applications.
Tripled harmonics can significantly impact the performance of an induction motor. Here's how:
What are Tripled Harmonics?
- Tripled harmonics refer to the frequencies that are three times the fundamental frequency.
- In a typical 60 Hz system, this would correspond to 180 Hz.
Effects of Tripled Harmonics on Induction Motors
- Induction motors are designed to operate efficiently at their rated frequency.
- Introducing tripled harmonics alters the voltage and current waveforms.
Reasons Induction Motors Fail to Start
- Increased Heating: Tripled harmonics lead to increased losses in the windings, generating excessive heat.
- Torque Ripple: The presence of these harmonics causes a non-uniform magnetic field, resulting in uneven torque production.
- Reduced Starting Torque: The motor may lack sufficient starting torque due to distorted current, making it unable to overcome inertia.
Conclusion
- While tripled harmonics do not directly cause a short circuit (a) or result in no effect (c), they can severely impair the motor's ability to start (b).
- Therefore, the correct answer is that the induction motor will fail to start when subjected to tripled harmonics.
Understanding these effects is crucial for preventing operational issues and ensuring the longevity of induction motors in industrial applications.
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