PART 1 The voltage across a 100+j25 Q impedance is 230230° V. The power factor of the load is 0.97 lagging. a) What is the real power absorbed by the load? Answer: W b) What is the reactive power absorbed by the load? VAR Answer: A generator is producing 2 kW at 0.85 pf lead. a) What is the reactive power produced by the generator? VAR Answer: b) What is the apparent power of the generator? Answer: VA c) If the voltage at the generator terminals is 440 Vrms, what is the current (in rms)? Answer: A

Q: Harmonic Frequency 50 Hz 250 Hz 350 Hz 450 Hz Current Amplitude 5A 2.1 A 1.5 A 0.8 A The current…

A: Given,

Q: The power triangle shown represents the characteristics of a 230 V 60 Hz ac motor. How much…

A: Add a capacitive reactive power to counteract the existing inductive reactive power.The formula to…

Q: The circuit shown in Figure Q1.2 is connected to a 1.6 Hz sinusoidal source. Calculate the total…

A: Given : frequency =1.6 hz ω=2Πf ω=2Π×1.6 ω=10.05 radian/second

Q: A 3 phase 10 pole 600 rpm delta connected alternator has 12 slots/pole with 8 conductors per slot.…

A: Determine the rms value of the phase, line voltage and circulating current.

Q: Instantaneous power output of a single phase 60 Hz generator will not be constant under following…

A: Instantaneous Power: Instantaneous power is defined as the electric power available at any given…

Q: power triangle shown below represents the characteristics of a 230 V 60 Hz ac motor. How much…

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Q: None

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

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Q: An alternating f.e.m generator has an effective value of 2000 V and a frequency of f=100 Hz. Find…

A: An alternator f.e.m generator has,The effective voltage of the generator, .The frequency of the…

Q: What is the calculated phase angle between the load voltage and current? Using the calculated phase…

A: V=10 V peak f=1 KhZ   For given load we have to find load phase angle  power factor apparent power,…

Q: A 1 kV, 50 Hz underground cable has a capacitance of 0.38 µF/km per/phase. How much reactive power…

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Q: A generator rated 75MVA is delivering 0.8pu power to a motor through a transmission line of…

A:

Q: What is the capacitance to be connected in parallel with the load to increase the power factor to…

A:

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.