A 50 Hz, 4 pole turbo alternator rated at 20 MVA, 13.2 kV has inertia constant H=4 kW sec/kVA. The KE stored in the rotor at synchronous speed is

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A: Sycronous speed=120×frequencypoles=120×608                   =900 r.p.m Given rotor rotates in…

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Q: Permanent-split capacitor motor is in effect a 2-phase motor and at no load could attain the…

A: True and false?  Permanent-split capacitor motor is in effect a 2-phase motor and at no load could…

Q: The number of stator poles produced in the rotating magnetic field of a 3-ϕ  induction motor having…

A: We can use the formula,P = 2n- P is the number of stator poles- n slots per pole per phase Given,n =…

Q: A 60 Hz alternator stator is wye connected with each phase winding having 24 turns of wire. The…

A: f=60HzT=24 turnsϕ=0.103 weber

Q: List 3 differences between how 3 phase induction motors and single phase induction motors work

A: Induction motor is a widely used machine in the industry and for commercial purposes. based on the…

Q: how does the rotor of a 3-phase induction motor get power a-  through brushes and commutador…

A: In this question we need to choose a correct option.

Q: A a Single phase 400W, 50 Hz motor takes Suply current of SOA at power factor of 0.6 Lagging The…

A:

Q: 8max : 0:5 T 0.ST, 1800 rpm O.5T In a two pole 3-p synchronous generator, the peak flux of rotor…

A: The solution can be achieved as follows.

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.