Find the kVAR rating and capacitance required to improve the power factor to 0.96 (lagging)
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Find the kVAR rating and capacitance required to improve the power factor to 0.96 (lagging)
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- Consider the circuit shown in Figure 2.23 in time domain. Convert the entire circuit into phasor domain.Consider the load convention that is used for the RLC elements shown in Figure 2.2 of the text. A. If one says that an inductor absorbs zero real power and positive reactive power. is it (a) True (b) False B. If one says that a capacitor absorbs zero real power and negative reactive power (or delivers positive reactive power), is it (a) False (b) True C. If one says that a (positive-valued) resistor absorbs (positive) real power and zero reactive power, is it (a) True (b) FalseTwo equal voltages are out of phase with respect to each other by 90 electrical degrees. If the resultant is 311 Volts, what is RMS value of each one?-write legibly-show the complete solution
- COURSE: Electrical EngineeringSUBJECT: Electrical ApparatusINSTRUCTIONS:• Write the GIVEN with their respective symbols and units.• Do not skip the SOLUTIONS, do it step-by-step with their respective symbols and units• Round up to 3 three decimal places the FINAL ANSWERS and BOX it. PROBLEM: Determine the complex power for the following cases:a. Q = 2000 VAR, pf = 0.9 (leading)b. ????=220 ?,?=1 ??,|?|=40 Ω (inductive)DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: AC CIRCUITS NOTE: Please solve in this way. 1. Please have a good handwriting, some of the answers are not readable. Thank you! 2. GIVEN.(include symbols and units) 3. REQUIRED/FIND/MISSING (with symbol/s) 4. ILLUSTRATION (Required). 5. STEP-by-STEP SOLUTION with Formulas and Symbols. No Shortcut, No skipping, and detailed as possible 6. FINAL ANSWERS must be rounded up to three decimal places PROBLEM: • A 4200 V, three-phase transmission line has an impedance of 4+j1 Ω per phase. If it supplies a load of 1MVA at 0.75 power factor lagging. Find: a. The complex power b. The powerloss in the line c. The voltage at the sending endTOPIC: Power Systems, Power Plants & IlluminationINSTRUCTIONS:- Answer in this format: Given, Illustration, Required Conversion, Solution, Final Answer.- Step-by-step solution, do not skip even simple calculations to avoid confusion.- If answered in written form, make sure it is readable.PROBLEM: A generating station has two 50 MW units each running for 8,500 hours in a year and one 30 MW unit running for 1,250 hours in one year. The station output is 650 x 106 kWh per year. Calculate the utilization factor. 0.732 0.653 0.811 0.795
- 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 ?An industrial assembly hall is continuously lightedby one hundred 40-W mercury vapor lamps suppliedby a 120-V and 60-Hz source with a power factor of0.65. Due to the low power factor, a 25 percent penaltyis applied at billing. If the average price of 1 kWh is$0.01 and the capacitor’s average price is $50 permillifarad, compute after how many days of operationthe penalty billing covers the price of the power factorcorrection capacitor. (To avoid penalty, the powerfactor must be greater than 0.85.)A wind turbine gives maximum output power of 1MW at a wind speed of 15m/s. Refer to the above wind turbine choose the correct statement a. The wind rotor swept area is 400square meters. b. The wind rotor swept area is 835 square meters. c. The wind rotor swept area is 700 square meters d. The wind rotor swept area is 638 square meters.
- Short Problem: Given a series circuit comprised of the following element: 90.53-ohm resistor, practical inductor with internal resistance of 0.58 ohm and reactance of 43.58 ohms; and a capacitor with reactance of 5.1 ohms. Compute for the magnitude of its equivalent impedance in ohms. Note: Follow this reminder carefully. Compute to the nearest 4 decimal places. No Scientific notation. Do not round off in the middle of calculation. Use stored values. Write the numerical values only. No units in your final answer. Spaces are not allowed. Excessive number of decimals as compared to the required number of decimals may result to an incorrect answer.q13/ choose the correct answer The variation of the load is considered over a period of one year in an annual load curve. Select one: True FalseThe R, L and C circuit has resistance, R=10Ω, inductance, L= 107 milli-Henry and Capacitance, C=80 micro-farad. The supply voltage is 120 Volts-RMS with a frequency of 60 HZ. What is the power dissipated, across the resistor of the circuit in units of Watts?