A load is plugged into a normal 230V power outlet. The power is 1.5 kW, and the power angle is 35⁰. How large is the RMS current which is drawn from the outlet? 7A, 8A, 9A, 10A or 11A?
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- You are an electrician working in an industrial plant. A 30-hp three-phase induction motor has a current draw of 36 amperes at full load. The motor is connected to a 480-volt line. A three-phase wattmeter indicates a true power of 22 kW. Determine the power factor of the motor and the amount of capacitance needed to correct the power factor to 95. Also determine the minimum voltage rating of the capacitors. The capacitors are to be connected in wye.A series RL is supplied by a voltage source of 10 Volts. If the R = 5 Ω and XL = 5 Ω , what is the rms value of the resistor voltage in Volts.A plant has a load of 290 kilowatt with an average power factor of 70%. The owner requests you to correct the power factor to reduce its power consumption. How much capacitor kVAR is required to increase the power factor to 95%?
- Assume you are working on sinusoidal ac supply voltage which is in the form of 150 sin 220 t. So apply this voltage find out following parameters. Analyze the average value of voltage. Options: A)89.85volt B)90.75volt C)86.45volt D)95.55voltDetermine the power and the rms value of the following signals: a) 10cos(100t + π/3) + 16 sin(150t + π/5) b) 10 cos(5t)cos(10t) c) ejαt cos(ω0t)When connected to a 120 V (rms). 60 Hz power line, a load absorbs 4 kW at a lagging power factor of 0.8. Find the value of capacitance necessary to raise the power factor to 0.95
- Referring to figure 3, determine the rms current at j5Ω reactance (inductor) using KCL(Answer must be in polar formand should be in 4 decimal places).In a system with a power factor of 0.87 and P = 225 kW, determine the apparent power.A 240-V rms 60-Hz supply serves a load that is 10 kW (resistive), 15 kVAR (capacitive), and 22 kVAR (inductive). What is the current drawn from the supply in amperes? And what is the required capacitor rating in microfarads required to improve the power factor to 0.96 ?
- Assume you are working on sinusoidal ac supply voltage which is in the form of 150 sin 220 t. So apply this voltage find out following parameters. Analyze the rms value of voltage. Options. A) 106.05 volt B) 150 volt C) 135 volt D) 130.5 volt23. If the impedance of the circuit is 50ohm and the resistance is 8ohm. Find the power factor A. 0.65 B. 0.12 C. 0.87 D. 0.16 24. Find the average value of a sine wave current if the maximum voltage is 415V A. 221.12 B. 254.12 C. 212.02 D. 264.36What is RMS voltage in a factory from an outlet that has a nominal voltage of 230 VAC