Q.3 A 3-phase load (3 + j3) Ohm on each phase) is to be supplied from 3-phase 210 - V source. The total reactive power consumed by the load is.

A load has a leading power factor. a) Is it a capacitive or inductive load? b) Is the reactive power positive or negative?  c) Repeat for a load with lagging power factor

The temperature of a noninductive heater unit is controlled by a reactor. The heater unit and the reactor are connected in series across a 250 V, 60 Hz source. The voltage across the heater unit is 200 V. The voltage across the reactor is 100 V. The current in the circuit is 10 A. Determine: the power factor of the series circuit. the power factor of the reactor. the impedance of the reactor. the effective resistance of the reactor. the inductive reactance of the reactor

A single-phase source has a terminal voltage V=1200volts and a currentI=1530, which leaves the positive terminal of the source. Determine the real and reactive power and state whether the source is delivering or absorbing each.

8. The total power supplied to a balance delta load is found in the same way as for a balance wye load. True False Either Neither 12. A load of 20 + j35 ohms is connected across a 220 V, 60 Hz supply. Find the reactive power of the load in var. 595 2420 1042 1382 13. A type of DC source where the characteristic output voltage has perfect unidirectional waveform and is based on electrochemical principle. Generator Inverter Converter Battery 14. Calculate the Rf of a circuit whose impedance is 20+j35 and current of 2A. 0.86 0.91 0.50 0.71 15. What capacitor shall be installed in parallel with a circuit to achieve a unity power factor if the reactive power of a circuit is 200VARS and the voltage is 100V. 80.45 microfarad 53.05 microfarad It's already in unity 62.45 microfarad

Which one of the following statements is true: The purpose of the power-factor correction is to add inductive elements to keep real power at a minimum level. The purpose of the power-factor correction is to add resistive elements (typically resistances) to improve the total reactive power. The purpose of the power-factor correction is to add reactive components (typically capacitive) to establish a system power factor closer to unity. The purpose of the power-factor correction is to add resistive elements (typically resistances) to establish a system power factor closer to zero.

Power factor correction is a method to do which of the following.

solve the circuit to determine the following parameters: active power P, reactive power Q, and apparent power S in each phase of the circuit, as well as the total active power Pt, the total reactive power Qt and the total apparent power St

A load is rated at 440V(rms), 7.5A(rms) and 3.3KW when connected to a 50HZ source. Find the load impedance.

Complete Solution: A 250 - kVA, 0.5 lagging power factor load is connected in parallel to a 180 - W, 0.8 leadingpower factor load and to a 300 - VA, 100 VAR inductive load. Determine the total apparentpower in kVA. Express your answer in polar form.