5. Two 50 MVA, 3-phase alternators operate in parallel. The settings of governors are such that the rise in speed from full-load to no-load is 2 % in one machine and 3 % in the other; the characteristics being straight lines in both cases. If each machine is fully loaded when the total load is 100 MW, what would [26 MW; 34 MW] be the load on each machine when the total load is 60 MW?

Q: A 1200 kW,60 Hz synchronous alternator A identical governor droop of 0.0005 Hz/kW.Machine A takes…

A:

Q: Two shunt generators A and B operates in parallel and their load characteristics may be taken us…

A: GivenGenerated voltage of A EgA=240 vcurrent in generator A IA=200 AGenerated votage of B EgB=245…

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.