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- A 5-ohm resistor is connected in series with a 25 micro-farad capacitor. A source voltage of 158 volts, 50 Hz supplies the combination. Determine the following: a. Circulating current b. Voltage across the resistor c. Voltage across the capacitor d. Real power supplied by the source e. Reactive power supplied by the source f. Apparent power of the circuit g. Power factor of the entire circuitIf the voltage and current supplied to a circuit orload by a source are˜VS = 170∠(−0.157) V ˜IS = 13∠0.28 Adeterminea. The power supplied by the source which isdissipated as heat or work in the circuit (load).b. The power stored in reactive components in thecircuit (load).c. The power factor angle and power factor.Assume that the voltage applied to a load is V = 208- 30° V and the current flowing through the load is I = 5415° A a. Calculate the complex power S consumed by this load. b. Is this load inductive or capacitive? c. Calculate the power factor of this load. d. Calculate the reactive power consumed or supplied by this load. Does the load consume reactive power from the source or supply it to the source?
- Problem 4 An electric saw, a wood shaper, and a motor load of a workshop establish a 18 kVA power demand at 0.5 power factor lagging on a 208 V, 60 Hz supply. a) Establish the power triangle for the load. b) Determine the power-factor capacitor that must be place in parallel with the load to raise the power factor to 0.9 lagging. c) Determine the change in supply current from the uncompensated to the compensated system. d) Determine the power-factor capacitor that must be placed in parallel with the load to raise the power factor to unity.2)With reference to the waveform given below formulate the equation for the average value of DC voltage available across the load, if the load connected is a pure resistive load and if the circuit applicable tot his waveform is fed from a load having 180 volt 50 Hz start connected input with the value of resistance equivalent to 200 ohm solve and obtain the value of Dc power in the load (3 phase bridge) Van Vbn Vcn +Vm P 180° 210° 360° D3&D4 D5&D4 D5&D2 D1 & D2 D1&D6 D3 & D6 120° 120°2. A voltage applied to a load is V=208 4 20°V and current through load is I=10 a–10° A. Find the following [SO 1] o complex power consumed by load o Is the load inductive or capacitive? o the power factor of the load o the reactive power consumed or generated by the load. o Does the load consume or supply reactive power?
- d. 565.685 V 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 O c. 12000 + j16000 VA O d. None of these Given the circuit below and the associated set of voltages and currents, the reactive Power developed by im voltage source is FENG300 MINTERM3. A 12020⁰ Vrms is to supply power to a welder, heater and an induction motor. A welder is a coil of (4+j3) ohm, the induction motor draws 60KW with 0.8 power factor, and the heater is a resistor that draws 15KW power. Find the complex power, real power, reactive power and the total power factor that must be supplied by source. If a capacitor will be used to supply a reactive power in the circuit in order that the net load will have a unity power factor, what reactive power must be supplied by the capacitor? Draw the circuit.9. A noninductive load with a resistance of 30 Q2 is connected in series with a capacitor. The capacitor has a capacitive reactance of 25 Q and negligible resistance. The series circuit is energized from a 210 V, 60 Hz source. Determine: a. the impedance of the series circuit. b. the current, in amperes. c. the loss in volts across the noninductive resistance load. d. the loss in volts across the capacitor.
- A 5-ohm resistor is connected in series with a 25 micro-farad capacitor. A source voltage of 158 volts, 50 Hz supplies the combination. Determine the following: d. Real power supplied by the source e. Reactive power supplied by the source f. Apparent power of the circuit g. Power factor of the entire circuitQuestion 1 For the circuit shown in Figure Q1, determine the: (a) equivalent impedance, Zeq of the circuit, as seen from the source, (b) total voltage applied to the circuit, (c) input power factor and state whether it is leading or lagging with justification, and (d) total apparent power, active power and reactive power. 18245 A 100 -j4Q Figure Q1 100 j200A capacitor drawing 4 kvar is placed in parallel with the electro-magnet that draws 3 kW of active power and 4 kvar of reactive power.. a. Calculate the new value of apparent power b. What is the new value of reactive power? c. What is the value of active power? d. What is the new power factor?