1. A 208-volt, 60Hz, 4-pole, three phase induction motor has a full-load speed of 1755 rpm. calculate: (a) Its Synchronous speed

Q: 9) Provide one general method to control the speed of an induction motor.

A: The rotor speed (Nr) of an induction motor is given by,𝑁𝑟=(1−𝑠)𝑁𝑠And the synchronous speed is…

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: The power input to the rotor of a 440 V, 50 Hz 6-pole, 3-phase induction motor is 80 kW. The rotor…

A: The given details:

Q: A 3-phase, 4-pole, 50Hz induction motor is running at 1455rpm. Find the slip speed and slip.

A:

Q: A 4-pole, 3-phase alternator drives at 1000 r.p.m. is supplying to an induction motor which has full…

A: Given: 3 Phase Alternator P = 4 Ns = 1000 RPM Full load Speed = 2880 RPM

Q: A 6-pole. 50-Hz 3-ϕ induction motor is running at 950 rpm and has rotor loss of 5 kW. Its rotor…

A: Thank you Reference,Concept and some relevant examples:

Q: A 125-hp, 480-V, 50-Hz, 6-pole, Y-connected induction motor has the per-phase equivalent circuit…

A: The given information about a Y-connected three phase induction motor is: Rated shaft output power…

Q: (a) A 3-phase induction motor is being supplied at constant voltage and frequency. It drives a load…

A: The answer is given below steps

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.