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 14E
To determine
Calculate the average power absorbed by each passive element and supplied by each source in the circuit.
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Referring to the Figure 2, compute the following values, given that the operating frequency
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Sketch and illustrate the power triangle with proper labelling, units and values.
E
160 150 mH
Figure 2
11.85 A regular household system of a single-phase three-
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(b) the total complex power supplied
(c) the overall power factor of the circuit
120/0° V
120/0° V
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1₂
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10 Ω
15 mH
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Answer 11.30
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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- Q2) A three phase load (motor) draws 30 kW when connected to 440 V rms, 50 Hz line if the power factor is 0.85 lagging, Determine: a) The line current drawn by the motor. b) The KVAR rating of the three capacitors - connected in parallel with the motor that will raise the power factor to 0.95 lagging, and c) The capacitance of each capacitor.arrow_forward4. Three transformers each rated 100KVA, supplies it rated value to a load having a pf of 0.8 lagging. If an induction motor rated 10HP, 0.8 lagging and 90% efficient is added to the initial load, determine the kvar value of capacitor bank necessary to prevent the overloading of transformers.arrow_forward11.15 In the circuit of Fig. 11.46, find the value of Z, that will absorb the maximum power and the value of the maximum power. 120/0° V 192 wwwww --/12 V./19 V₂ 2V₂ ZLarrow_forward
- In Fig. 11.12, the resistor R, is adjusted until it absorbs the maximum average power. Calculate R, and the maximum average power absorbed by it. 80 42 j60 2 120/60° V -/30 2 Figure 11.12 For Practice Prob. 11.6. Answer: 300, 6.863 W. 90 £2 Practice Problem 11.6arrow_forwardSome parameters are given related to your student ID numbers. These are:V1 = XXX V (first 3 numbers, e.g. 170 V (RMS)) f1 = XXX Hz (assume that your last number is ‘y’, then f1 = (y+1)*10 Hz, e.g. if y=2 then f1=(2+1)*10=30Hz)1) A single-phase load has an active power of P = 2 kW at V1 V @f1Hz and the power factor is cosφ = 0.75. This motor iscompensated to cosφ = 0.85 using a parallel capacitor (the load is modelled as series RL). Determine:a. Reactive power and apparent power before compensation using power factorb. Current before compensationc. R, XL and L values of the loadd. Reactive power and apparent power after compensatione. Find the reactive power difference between compensated and uncompensated status (which will give thecapacitor power) and calculate XC and C using the power difference valuef. Simulate the uncompensated and compensated circuits. Plot voltage and current on components andcalculate the phase shift of the signals from Ving. Plot Vin and Iin comparison for…arrow_forwardGiven a series circuit comprised of the following element: 88.01-ohm resistor, practical inductor with internal resistance of 0.76 ohm and reactance of 25.96 ohms; and a capacitor with reactance of 9.53 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 answerarrow_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_forwardGiven a series circuit comprised of the following element: 77.03-ohm resistor, practical inductor with internal resistance of 0.16 ohm and reactance of 74.36 ohms; and a capacitor with reactance of 12.45 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.arrow_forwardSection 11.8 Power Factor Correction 11.69 Refer to the circuit shown in Fig. 11.88. (a) What is the power factor? (b) What is the average power dissipated? (c) What is the value of the capacitance that will give a unity power factor when connected to the load? 120 V rms Z 10 +j122 60 Hzarrow_forward
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