A three-phase, 60 Hz, 25 hp, wye-connected induction motor operates at a shaft speed of almost 1800 rpm at no load and 1650rpm at full load. Determine the following: (a) The number of poles of the motor (b) The per-unit and percent slip at full load (c) The slip frequency of the motor

Q: -Phase 50Hz 6 pole induction motor has rotor resistance of 0.1 ohm and reactance of 0.92. ignore…

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Q: A three-phase, four-pole, 208 V, 60 Hz, Y-connected, induction motor has the following parameters,…

A: Given data : 208 v , 60 hz R1 =0.22 X1=0.43Xm = 15 Rc=∞P = 4 R2=0.127X2=0.43Solution (a)rms value of…

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

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Q: 23. As load is increased from no load to full load on a 3-phase squirrel-cage induction motor, what…

A: " Since you have posted a question with multiple subparts, we will solve the first three subparts…

Q: A) Why is the power factor of a lightly loaded 3-phase squirrel-cage inductio a) most of the power…

A: A. At light loads power supplied to induction motor consists of magnetization or reactive power…

Q: If a 3-phase squirrel-cage induction motor were to run at synchronous speed, there would be no…

A: Induction motor is generally asynchronous motor means it run at below   it's synchronous speed . But…

Q: 2.. A three-phase 60 Hz asynchronous motor runs at 890 rpm at idle and 840 rpm at full load. ww w w…

A: Frequency f= 60Hz Speed 890rpm at idle  Find the number of poles Slip at nominal speed  What happed…

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.