Loose Leaf for Engineering Circuit Analysis Format: Loose-leaf
9th Edition
ISBN: 9781259989452
Author: Hayt
Publisher: Mcgraw Hill Publishers
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Chapter 11, Problem 63E
To determine
Find the capacitance to transfer maximum power transfer to the load with
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L3
12
teeet
1.25 mF
40 mH
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3Ω
30 mH
R3
Is
1 mF
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340 sin (200t)
Figure 2
3) As referred to Figure 2, determine these quantities:
a) Average power, P delivered by the voltage source.
b) Total reactive power, Q consumed by the inductors and capacitors.
c) Complex power of the circuit.
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A resistor of 50 ohms, a 200mH inductor, and a 1.5 x 10-4 F capacitor is connected in parallel to a 120-volt, 60 cps source.
Calculate:
a) the equivalent impedance
b) the current in each load
c) total current
d) the total real, reactive, and apparent powers
e) power factor.
Determine the values of the resistance and the series-connected inductance or capacitance for each of the following impedances: (a) (12 + j5) ohm (b) −j40 ohm (c) 30∠60◦ ohm (d) 2.20 × 106∠−30◦ ohm. Assume for each a frequency of 50 H
Chapter 11 Solutions
Loose Leaf for Engineering Circuit Analysis Format: Loose-leaf
Ch. 11.1 - A current source of 12 cos 2000t A, a 200 ....Ch. 11.2 - Given the phasor voltage across an impedance ,...Ch. 11.2 - Prob. 3PCh. 11.2 - Prob. 4PCh. 11.2 - A voltage source vs is connected across a 4...Ch. 11.3 - If the 30 mH inductor of Example 11.7 is replaced...Ch. 11.4 - Calculate the effective value of each of the...Ch. 11.5 - For the circuit of Fig. 11.16, determine the power...Ch. 11.6 - Prob. 10PCh. 11 - Prob. 1E
Ch. 11 - Determine the power absorbed at t = 1.5 ms by each...Ch. 11 - Calculate the power absorbed at t = 0, t = 0+, and...Ch. 11 - Three elements are connected in parallel: a 1 k...Ch. 11 - Let is = 4u(t) A in the circuit of Fig. 11.28. (a)...Ch. 11 - Prob. 6ECh. 11 - Assuming no transients are present, calculate the...Ch. 11 - Prob. 8ECh. 11 - Prob. 9ECh. 11 - Prob. 10ECh. 11 - The phasor current I=915mA (corresponding to a...Ch. 11 - A phasor voltage V=10045V (the sinusoid operates...Ch. 11 - Prob. 13ECh. 11 - Prob. 14ECh. 11 - Find the average power for each element in the...Ch. 11 - (a) Calculate the average power absorbed by each...Ch. 11 - Prob. 17ECh. 11 - Prob. 18ECh. 11 - Prob. 19ECh. 11 - The circuit in Fig. 11.36 has a series resistance...Ch. 11 - Prob. 21ECh. 11 - Prob. 22ECh. 11 - Prob. 23ECh. 11 - Prob. 24ECh. 11 - Prob. 25ECh. 11 - Prob. 26ECh. 11 - Prob. 27ECh. 11 - Prob. 28ECh. 11 - Prob. 29ECh. 11 - Prob. 30ECh. 11 - Prob. 31ECh. 11 - Prob. 32ECh. 11 - Prob. 33ECh. 11 - (a) Calculate both the average and rms values of...Ch. 11 - Prob. 35ECh. 11 - FIGURE 11.43 Calculate the power factor of the...Ch. 11 - Prob. 37ECh. 11 - Prob. 38ECh. 11 - Prob. 40ECh. 11 - Prob. 41ECh. 11 - Prob. 42ECh. 11 - Prob. 43ECh. 11 - Compute the complex power S (in polar form) drawn...Ch. 11 - Calculate the apparent power, power factor, and...Ch. 11 - Prob. 46ECh. 11 - Prob. 48ECh. 11 - Prob. 49ECh. 11 - Prob. 50ECh. 11 - Prob. 51ECh. 11 - Prob. 52ECh. 11 - FIGURE 11.49 Instead of including a capacitor as...Ch. 11 - Prob. 54ECh. 11 - A load is drawing 10 A rms when connected to a...Ch. 11 - For the circuit of Fig. 11.50, assume the source...Ch. 11 - Prob. 57ECh. 11 - A source 45 sin 32t V is connected in series with...Ch. 11 - Prob. 60ECh. 11 - FIGURE 11.51 The circuit in Fig. 11.51 uses a Pi...Ch. 11 - Prob. 62ECh. 11 - Prob. 63ECh. 11 - You would like to maximize power transfer to a 50 ...
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- (c) A 240 V rms 50 Hz supply serves four resistive loads that is 10 kW each, an inductive load of 75 kVAR and a 45 kVAR capacitive load. Calculate : (i) The current drawn from the supply. (ii) The KVAR rating and capacitance required to improve the power factor to 0.95 lagging. (iii) The current drawn from the supply after power factor correction.arrow_forwardA voltage, v = 120 sin(377t + 50° ) supplies a current, i= 10 cos( 377t – 600) to an impedance load. Determine the following: A.) The resistance of the load is ohms. (a) 4.1 (b) 11.28 (c) 12.5 (d) 7.5 B.) The inductance of the load is mH. a.) 10.9 b.) 4.1 c.) 9.10 d.) 1.4 C.) The real power supplied to the load.is watts (a) 260.47 (b) 975.35 (c) 1127.63 (d) 1135.27 D.) The power factor of the circuit is (a) 0.71 lagging (b) 0.17 leading (c) 0.94 leading (d) 0.94 laggingarrow_forwardCircuit Diagram Computed Values Compute the expected power factor of the circuit given the different capacitance. R1 V1 5002 220V (1 60Hz 0° 100μl It (RMS) Capacitance Real Power (₂F) (Watts) mag (A) 70 60 50 2 11 100mH Reactive Power (Vars) Power Factor HHarrow_forward
- 2. A resistor of 6Q and an unknown impedance coil in series draw 12 amps from a 120 volts, 60 Hz line. If the real power taken from the line is 1,152 watts, what is the coil inductance? Two spheres senarated from each other by 10 m have a chared of 0 001 Coulomh and 0 003arrow_forwardTwo loads are connected to your standard 110V(rms), 60HZ outlet; Load 1: R = 2002 in series with L= 0.5H Load 2: R = 1002 in parallel with C = 10µF Calculate: (i) Active and reactive power of load 1| (ii) Power factor of load 1 (iii) Active and reactive power of load 2 (iv) Power factor of load 2 (v) Active and reactive power supplied by the source (vi) Power factor of the sourcearrow_forwardA voltage of 10020° V(rms) is across an impedance of 5 + j2 №. a) What type of impedance is this (capacitive, inductive, or purely resistive)? b) Determine the current in the circuit; c) Draw the phasor diagram showing voltage and current; what is the phase relationship between current and voltage? Is this consistent with your answer to part a)? d) Determine the apparent, real, and reactive power delivered to the load; draw the power triangle; what is the power factor angle? What is the power factor (don't forget to include leading/lagging)?arrow_forward
- Example 11.8. An alternating current is given by; i = 10 sin 942 t Determine the time taken from t = 0 for the current to reach a value of + 6 A for a first and second time.arrow_forwardA source supplies power to the following three loads connected in parallel: (1) a lighting load drawing 10 kW, (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp 0.746 kW). Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.arrow_forwardA 240 V rms 50 Hz supply serves four resistive loads that is 10 kW each, an inductive load of 75 kVAR and a 45 kVAR capacitive load. Calculate : (i) The current drawn from the supply. (ii) The KVAR rating and capacitance required to improve the power factor to 0.95 lagging. (iii) The current drawn from the supply after power factor correction.arrow_forward
- PLEASE ANSWER LETTERS D & E A 25- W resistor, a 300-mH, and a 40-µF capacitor are connected in parallel across a 120-V, 50-Hz source. Determine the magnitude of the following: (a) admittance; (b) current through resistor, inductor, and capacitor; (c) the total current; (d) true power, inductive and capacitive reactive power; (e) apparent power, power factor, and power factor.arrow_forward11.4 There exists an L-C network with the same driving-point impedance as the network shown in the figure. This alternate network should contain only two elements. Find this network. Z(s) vor h lh ele 1f= 2harrow_forward4. A circuit is composed of a resistance of 22 ohms, an inductance of 0.11 henry and a capacitance of 12 microfarad, all connected in parallel to a 115-volt 60-Hz supply. Calculate the total reactive power 259.09 VARS 277.81 VARS 268. 02 VARS 212.18 VARSarrow_forward
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