Two loads are connected in parallel to a 2000 V(rms) 50Hz source. one of the loads Each of them has 500KVAR reactive power and 0.6 reverse power factor. Other load 300KW since it has absorbing power and 100KVAR dissipating power a) Draw the equivalent circuit of the system b) Find the common power factor of the system c) In order for the power factor to be 0.98 back, the capacitor to be connected in parallel with the loads find its value

A 15µF capacitor and a 470 ohm resistor are connected in series with a function generator. The supply voltage is 50V RMS 40Hz. Find the reactive power for this circuit.

An emergency power supply is required to provide a three-phase sinusoi- dal voltage source of 208 V (L-L) at a frequency of 400 Hz. The power is to be obtained from a battery consisting of cells in series, each cell hav- ing an internal voltage of 2.2 V and an internal resistance of 0.006 m. The load on the three-phase, 400-Hz system requires a fundamental fre- quency apparent power of 7.2 kVA at 0.9 power factor lagging. The in- ductance of the load is such that harmonic currents are negligible. How many cells should be connected in series to provide the required output? The switches may be regarded as ideal.

If a Load absorbs 20 kVA at a leading power factor of 0.6. Then the complex power is: Select one: O a. 12000 - j16000 VA O b. -12000 + j16000 VA Oc. 12000 + j16000 VA O d. None of these

QUESTION 5 A resistor, a capacitor, an inductor, and a mystery component are connected in parallel. The resistor has a resistance of 300N, the capacitor has a reactance of 2500, and the inductor has a reactance of 6000. The total impedance of the circuit is 59.52-j119.640. What is the mystery component? O there is no mystery component O resistor O inductor O capacitor

An impedance oil takes 144 watts at a lagging factor of 0.6. What values of capacitance and resistance should be connected in series with the coil if the power input to the latter is to remain unchanged and the overall circuit is to be unity? The circuit is energized by a Voltage of 120 v and frequency is 60Hz