EBK ELECTRICAL ENGINEERING
7th Edition
ISBN: 8220106714201
Author: HAMBLEY
Publisher: YUZU
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Chapter 5, Problem 5.81P
Two loads. A and B, are connected in parallel across a 1-kV-rms 60-Hz line, as shown in Figure P5.81. Load A consumes 10 kW with a 90 percent lagging power facto. Load B has an apparent power of 15 ICVA with an 80 percent lagging power factor. Find the power, reactive power, and apparent power delivered by the source. What is the power factor seen by the source?
Figure P5.81
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P5.16. Two loads, A and B, are connected in parallel across a 1-kV-rms
60-Hz line, as shown in Figure P5.16. Load A consumes 10 kW with
a 90 percent lagging power factor. Load B has an apparent power of
15 kVA with an 80 percent lagging power factor. Find the power, re-
active power, and apparent power delivered by the source. What is the
power factor seen by the source?
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*P5.75. Two loads-A and B - are connected in par-
allel across a 1-kV rms 60-Hz line, as shown in
Figure P5.75. Load A consumes 10 kW with a
90-percent-lagging power factor. Load B has
an apparent power of 15 kVA with an 80-
percent-lagging power factor. Find the power,
reactive power, and apparent power deliv-
ered by the source. What is the power factor
seen by the source?
1 kV rms
60 Hz
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Figure P5.75
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Determine the complex power, power, reactive power, and apparent power absorbed by the load in Figure T5.6. Also, determine the power factor for the load.
Chapter 5 Solutions
EBK ELECTRICAL ENGINEERING
Ch. 5 - Consider the plot of the sinusoidal voltage...Ch. 5 - Repeat Problem P5.3 for v(t) = 50 sin (500t+120) .Ch. 5 - A sinusoidal voltage v(t) has an rms value of 20...Ch. 5 - A current i(t)=10cos(2000t) flows through a 100...Ch. 5 - We have a voltage v(t)=1000sin(500t) across a 500...Ch. 5 - Calculate the rms value of the half-wave rectified...Ch. 5 - We have v1(t)=10cos(t+30) . The current i1(t)has...Ch. 5 - Solve for the mesh currents shown in Figure P5.55.Ch. 5 - Two loads. A and B, are connected in parallel...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 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?arrow_forwardP5.94. A delta-connected source delivers power to a delta-connected load, as shown in Figure P5.94. The rms line-to-line voltage at the source is Vabrms = 440 V. The load impedance is ZA = 12 + j3. Find IaA, VAB, IAB, the total power delivered to the load, and the power lost in the line. a Vm/150 Vm/30° + + с + b 1Ω M 1Ω M Vm/-90° +j2 Ω 0000 +j2 Ω 0000 192 +j2 Ω M 0000 Figure P5.94 B ZA ZA с A ZAarrow_forwardP5.94. A delta-connected source delivers power to a delta-connected load, as shown in Figure P5.94. The rms line-to-line voltage at the source is Vabrms = 440 V. The load impedance is ZA = 12 + j3. Find IaA, VAB,IAB, the total power delivered to the load, and the power lost in the line. 12 +j2 2 Vm 30° 12 +j2 2 ZA a +) В b. ZA Vm -90° Vm /150° 1Ω +j2 Q Figure P5.94 15arrow_forward
- Show solutions.arrow_forwarda. Find the Thévenin and Norton equivalent circuits for the circuit shown in Figure P5.89.b. Find the maximum power that this circuit can deliver to a load if the load can have any complex impedance. c. Repeat if the load is purely resistive.arrow_forwardConsider the situation shown in Figure P5.85. A 1000-V-rms source delivers power to a load. The load consumes 100 kW with a power factor of 25 percent lagging. a. Find the phasor I, assuming that the capacitor is not connected to the circuit. b. Find the value of the capacitance that must be connected in parallel with the load to achieve a power factor of 100 percent. Usually, power-systems engineers rate capacitances used for power-factor correction in terms of their reactive power rating. What is the rating of this capacitance in kVAR? Assuming that this capacitance is connected, find the new value for the phasor I. c. Suppose that the source is connected to the load by a long distance. What are the potential advantages and disadvantages of connecting the capacitance across the load?arrow_forward
- What is the average power in ghe single phase ac circuit with the purely resistive load? It is sinusoidal steady state excitation.arrow_forwardA 230 V, 50 Hz a.c. supply is applied to a coil of 0.06 H inductance and 2.5 resistance connected in series with a 6.8 F capacitor. Calculate impedance and power consumption and power factor. Now ,In above a.c. circuit, A inductor of 0.2H is connected in parallel with the power supply, find new power factor and power consumption.arrow_forwardThe single phase AC sinusoidal voltage then the rms value of the voltage v is .........arrow_forward
- P5.43. Compute the complex impedance of the net- work shown in Figure P5.43 for w = 500. Repeat for w = 1000 and w = 2000. Give the answers in both polar and rectangular forms. 10 μ 100 mH 100 2 Figure P5.43arrow_forwardDraw the sinusoidal waveform of the AC voltage and current for the given loads below. Describe the characteristics of the waveform for each load. A. Pure resistor B. Pure inductor C. Pure capacitorarrow_forwardAnother name for the RMS value of current or voltage is ... O the effective value O the exact value O the true value O the reactance valuearrow_forward
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