Three coils connected in series across a 100 V, 50 Hz supply have the following parameters: R1 = 18 Ω, L1 = 0.012 H; R2 = 12 Ω, L2 = 0.036 H; R3 = 3.6 Ω, L3 = 0.072 H Determine the potential drop and phase angle for each coil.   USE SERIES AC CIRCUITS METHOD NOT KIRCHOFF LAWS. PLS SHOW COMPLETE SOLUTION AND ROUND OFF TO FOUR DECIMAL PLACES , WRITE LEGIBLY PLS INLUDE ALSO THE CIRCUIT DIAGRAM:

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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.