For the circuit shown, what is the average power, P, consumed by the 18+ j32 load impedance? (Assume the voltage source is in RM 30 j8 N a 18 Ω な= = 25 20° V j32 0 O 29.76 W O 5.51 W O 8.35 W O 7.47 W Question 17 The Inad 7 consumes an average power of 75 W and a reactive power of 125 VAR What component is needed to form impedar 1+

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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.