A 400 V, 3-phase, 4 pole slip ring induction motor is supplied at rated voltage and frequency. The actual rotor resistance per phase is 3 2 and the stand still rotor reactance per phase is 12 2. Neglect stator resistance, reactance and magnetizing reactance. 1. Determine the value of resistance to be added to the rotor circuit to get the maximum torque at starting. 2. Determine the value of resistance to be added to the rotor circuit to get 75% of the maximum torque at starting.

Q: What is the main difference between modern and classical induction motors?

A: Solution Induction Motors are generally utilized as a part of the modern application because of a…

Q: Discuss two ways of starting a single-phase induction moto

A: Single Phase Induction Motor: Single-phase induction motors are constructed in the same way as…

Q: 6. What should be done for an induction motor to be able to produce the highes possible torque?

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Q: A wound rotor, induction motor has a rotor resistance of 0.6 ohms per phase and a rotor leakage…

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Q: What are advantages and disadvantages of the induction motor?

A: Advantages of the induction motor: Since, the stator of the synchronous motor and the induction…

Q: The frequency of the supply to the stator of an 8-pole induction motor is 50 Hz and the rotor…

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Q: What is the reason of the high starting current in the 3-phase induction motor? Explain in short.

A: Solution: The approximated equivalent circuit of the three-phase induction motor is, From the…

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.