three-phase induction motor

Q: If a 4-pole induction motor has a synchronous speed of 1500 r.p.m., then, supply frequency is

A: Given an induction motor with, Total number of poles, P = 4 Synchronous speed, Ns=1500 rpm Supply…

Q: If the voltage is 400v its 3 phase its frequency is 50hz it has 4 poles per phase its running speed…

A: Step 1:

Q: speed

A: In this question , generator frequency and pole is given..We have to calculate speed of generator...

Q: A 4-pole, 3-phase alternator running at 1500 rpm supplies to a 6-pole, 3-phase induction motor which…

A:

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.