1. The apparent power of a load is 4300 VA with lagging power factor of 0.875. The magnitude of the rms voltage across the load is given by [Vms| = 795 V. Assume f=60 Hz. Find the (a) average power of the load. (b) reactive power of the load. (c) complex power of the load.

Two ac generators supply the same voltage. However, the first generator has a frequency of 1.2 kHz, and the second has a frequency of 5.7 kHz. When an inductor is connected across the terminals of the first generator, the current delivered is 0.15 A. How much current is delivered when this inductor is connected across the terminals of the second generator? Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise. Number i Units 1₂ L 0000 V sin 2π f₁t Circuit 1 12 L 0000 Vo sin 2x f₂t Circuit 2

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In an L-R-C series circuit the source voltage leading the current with the phase angle of 30°. The resistance of the resistor is 100 Ohm. If the average power delivered by the source is 100 W, what is the rms voltage of the source? 165 V O 115 V 30 V O 200 V 60 V

The output voltage waveform of a four quadrant chopper is shown in figure. In the waveform, Vdc is input voltage, D is duty cycle ratio and T is cycle time. DT T. The RMS value of ripple component in output voltage is (A) Vác 2V VD-D (В) V(2D-1) (C) de de (D) V de VD- D? yd

Find the RMS value..

For the following voltage and current phasors in rms Voltage magnitude in (V) is 136 and phase angle in degree is 18 Current magnitude in (A) is 0.7 and phase angle in degree is 69 The power factor is: O 0.052 (lagging) O 0.951 (leading) O 0.777 (lagging) O 0.629 (lagging) O 0.629 (leading) O0.777 (leading)

Shown in the figure below is an "RC" circuit drive by an AC power source. The AC power source has an RMS voltage of Vps (RMS) = 11.58 Volts and is running at a frequency of f = 1.326e+04 Hz. resistor has a resistance of R = 3750 2 and the capacitor has an capacitance of C = 3.17e-09 Farads. Vps R ww Write the FORMULA for the total impedance of the circuit Ztot = Write the FORMULA for the phase of the total impedance of the circuit tot = Determine the numerical value of Ztot = Determine the numerical value of Pztot= Determine the current through the circuit: • I(PEAK) = • I(RMS) = Determine the voltage across the resistor: Amps Amps S2 C degrees

A series RL circuit connected to an AC voltage sinusoidal source of 100 V peak voltage and 1 kHz frequency. If R = 1 ohm and L = 1 mH, then... a) The rms current through the circuit leads the source voltage b) The rms current through the circuit is 11.114 A 279.043° c) The rms current through the circuit is 15.718 A z-80.96° O d) The rms current through the circuit is 15.718 A 270.56°

RMS Value of sinusoidal current is given by O a. Im//2 b. I,x2 Ос. c. ImX/2 O d. I/2 m