3. An industrial load is supplied through a transmission line that has a line impedance of 0.5 + j0.7 ohm. The 60Hz line voltage at the load is 48020° V rms. The load consumes 150kW at 0.75 pf lagging. What value of capacitance when placed in parallel with the load change the power factor to 0.95 lagging?
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- The instantaneous voltage across a circuit element is v(t)=400sin(t+30)volts, and the instantaneous current entering the positive terminal of the circuit element is i(t)=100cos(t+10)A. For both the current and voltage, determine (a) the maximum value, (b) the rms value, and (C) the phasor expression, using cos(t) as the reference.An industrial load consisting of a bank of induction motors consumes 50 kW at a power factor of 0.8 lagging from a 220-V,60-Hz, single-phase source. By placing a bank of capacitors in parallel with the load, the resultant power factor is to be raised to 0.95 lagging. Find the net capacitance of the capacitor bank in F that is required.Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor, and a 4 capacitor. (a) Draw the circuit diagram. (b) Compute the series impedance. (C) Determine the current I delivered by the source. Is the current lagging or leading the source voltage? What is the power factor of this circuit?
- An industrial installation has a power factor of 0.85 in backward. The demand is 150 KVA, and the operating voltage is 4800 V at 60 Hz. What should be done to bring the power factor to 0.95 in lagging? Indicate what you would connect and with what three-phase power. If the connection of the element to be added is in delta, indicate its reactance and the value of its capacitance or inductance. capacitance or inductance.Lance Smile operated two loads in parallel. The loads draw a total of 3kW at a 90% power factor lagging operating at a 230 Vrms 60-hz voltage source. Load 1 is taking 1000 W at 80% power factor lagging. Determine the following: a. The power factor of the second load. b. If a capacitor is connected in parallel with the loads, what is the value of the capacitance needed to correct the power factor to 95% lagging for the combined load.A 480-V rms source supplies a load that absorbs 100 kW at a 0.7 lagging power factor. A capacitor is then connected in parallel to this load to correct the overall power factor to 0.9 lagging. What reactive power must this capacitor produce to correct the power factor? What will be the resulting rms source current after connecting this capacitor?
- A load is connected across a 25,000 Volts, 60 Hz source and draws a current of 90 A rms. If the power factor of the load is to be corrected from 0.75 lagging to 0.9 lagging, find the capacitance of the capacitor to be connected in parallel with the load.. Determine the capacitance value that, when placed in parallel with this load, would produce a unity power factor. Assume that the source is 230 V at 60 Hz. The Q shown is a positive Inductive reactive power, which would have to be “offset” by the same value of Reactive Capacitance Power.. Given: An inductive load draws an apparent power of 5 kVA at a lagging power factor of 0.75. The load voltage is 1.2 KVRMS at 60 Hz. A 5-uF capacitor is connected in parallel to the load. Find: What is the new power factor of the system? -. Given: You have a complex inductive load that is dropping 240 VRMS. The operating frequency is 60 Hz. The current in the load is 9.615 ARMS. The load is dissipating 1.5 kW of average power. Find: Determine the value of a capacitor to attach in parallel with the load to change the load such that its power factor is 1.0.
- A single phase AC chopper supplies a pure inductive load of 0.02H from 220V, 50HZ AC supply. The triggering angle of the thyristors is 100°. (Assume the circuit is ideal.) a. Sketch the circuit b. Develop the load current expression and find the decay angle of the load current c. Sketch the load voltage and load current waveforms d. Calculate the RMS value of load voltage e. Calculate the RMS value of load current f. If the triggering angle of the thyristors is chosen as 60°. Explain the operation of the circuit.Where N=5 and the value of the capacitance C = 1.5 microfarad.. the average power supplied by the source in mWatt is?The single phase AC sinusoidal voltage then the rms value of the voltage v is .........