The synchronous speed of 4 pole, 50 Hz Induction Motor is: 750 RPM.
Keeping this in view, how do you calculate synchronous speed?
The synchronous speed of an AC motor is determined by the frequency of the source and the number of poles. The RPM is calculated by multiplying the frequency times 60 and dividing by the number of pairs of poles.
Similarly one may ask, what is synchronous speed and it’s formula?
The synchronous speed is given by the formula: N s = 120 f P. For f is the frequency. P is the number of poles. Ns is synchronous speed.
What is synchronous speed of 3-phase induction?
The 3-phase 4-pole (per phase) synchronous motor will rotate at 1800 rpm with 60 Hz power or 1500 rpm with 50 Hz power.
What is synchronous speed of motor?
Synchronous speed is the speed of rotation of the magnetic field in a rotary machine. An induction motor always runs at a speed less than synchronous speed. The rotating magnetic field which is produced in the stator will generate flux in the rotor which will make the rotor rotate.
What is the rpm of a 4 pole induction motor?
What is the supply frequency of a 4 pole induction motor has a synchronous speed of 1500 rpm?
For a 4 pole three phase induction motor having synchronous speed of 1500 rpm is operating at 1450rpm. The frequency of the induced emf in rotor is? Explanation: The induced frequency will be f = P(Ns-Nr)/2. f = 4(1500-1450)/2 = 100 Hz.
What is the synchronous speed of a AC 3-phase induction motor?
A 3-phase induction motor is wound for 8 poles and is supplied from 50 Hz source. Calculate (1) synchronous speed (2) slip of the motor when speed is 720 RPM.
Which of the following is preferred rpm for 4 pole induction motor?
The speed of a 4 pole induction motor is controlled by varying the supply frequency while maintaining ratio of Voltage to frequency constant(V/f). At rated frequency of 50Hz and rated voltage of 400 V its speed is 1440 rpm.