A three phase star connected motor, connected across a 3-phase star connected supply o 50HZ takes a current of 2OA at 0.8 power factor lagging. Determine the capacitance capacitors per phase that are to be connected in delta across the terminals of the motor the power factor to unity.

Q: Determine the RMS magnitude of Current I.

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A: As per our company guidelines we are supposed to answer only first question. Kindly repost other…

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Q: Question 1. An industrial load consisting of a set of induction motors connected to a 220 V 60 Hz…

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Q: Compute the amount of capacitive reactance  needed to correct  the power factor.

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A: The solution can be achieved as follows.

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Q: Question 9 (a) Three loads are connected in parallel to an ideal 50 Hz single phase AC supply of 230…

A: Given  f  = 50 h ; v = 230 v  1. load 1 = P1  = 23kv therefore I1  = P1 / V =     = 2.3x10-3230…

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Q: 31- Switching Overvoltage is an: a- Internal fault. b- External fault. C- Unbalance fault. d- All…

A: NOTE:- As per our company policy, experts are allowed to answer only 1 Question at a time, so only…

Q: A 220V single phase induction motor draws 2.76 kW at 220V and 0.8 pf. A 3 KVA capacitive load is…

A: Voltage is given V = 220 V. Initial active power P1=1.76 KW. Initial power factor cosϕ1=0.8.…

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A: Given data Motor ratings Power rating = 30 HP V=VL= 480 V I=IFL = 36 A True power =P= 22 kW Power…

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.