Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 23P
Using the DMM current reading and the oscilloscope measurement in Fig. 15.100:
- Determine the inductance L.
- Find the resistance R.
- Find the closest standard value for the inductance found in part (a).
Fig. 15.100
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Find Laplace transform and the corresponding ROC for
x(t) = e−3sin(2t) u(t)dt
Three similar coils, connected in star, take a total
power of 1.5 kW, at a power factor of 0.2, from a
three-phase, 400 V, 50 Hz supply. Calculate: (a) the
resistance and inductance of each coil; (b) the line
currents if one of the coils is short-circuited.
(a) Three 20 µF capacitors are star-connected across
a 400 V, 50 Hz, three-phase, three-wire supply.
Calculate the current in each line. (b) If one of the
capacitors is short-circuited, calculate the line cur
rents. (c) If one of the capacitors is open-circuited,
calculate: the line currents and the p.d. across each
of the other two capacitors.
ANS:
1.525 A; 2.64 A, 2.64 A, 4.57 A; 1.32 A, 1.32 A, 0;
210 V
Chapter 15 Solutions
Introductory Circuit Analysis (13th Edition)
Ch. 15 - For the resistive element in Fig. 15.81: Write the...Ch. 15 - For the resistive element in Fig. 15.82: Write the...Ch. 15 - For the inductive element of Fig. 15.83: a. Write...Ch. 15 - For the inductive element of Fig. 15.84: Calculate...Ch. 15 - For the inductive element of Fig. 15.85: Write the...Ch. 15 - For the capacitive element of Fig. 15.86: Write...Ch. 15 - For the capacitive element of Fig. 15.87:...Ch. 15 - For the capacitive element of Fig. 15.88: Write...Ch. 15 - Sketch the impedance diagram of a 120 k resistor.Ch. 15 - Sketch the impedance diagram of a 5 mH coil...
Ch. 15 - Sketch the impedance diagram of a 0.02 F capacitor...Ch. 15 - Calculate the total impedance of the circuits in...Ch. 15 - Calculate the total impedance of the circuits in...Ch. 15 - Find the type and impedance in ohms of the series...Ch. 15 - For the circuit in Fig. 15.92 Find the total...Ch. 15 - Repeat problem 15 for the circuit in Fig. 15.93,...Ch. 15 - For the circuit in Fig. 15.94: Find the total...Ch. 15 - Repeat Problem 17 for the circuit in Fig. 15.95...Ch. 15 - For the circuit of Fig. 15.96: Find the total...Ch. 15 - For the circuit of Fig. 15.97: Find the current...Ch. 15 - Prob. 21PCh. 15 - Using the oscilloscope reading in Fig. 15.99,...Ch. 15 - Using the DMM current reading and the oscilloscope...Ch. 15 - Using the oscilloscope reading in Fig. 15.101:...Ch. 15 - An electrical load has a power factor of 0.8...Ch. 15 - Find the series element or elements that must be...Ch. 15 - Calculate the voltages V1andV2 for the circuits in...Ch. 15 - Calculate the voltages V1andV2 for the circuits in...Ch. 15 - For the circuit in Fig. 15.105: Determine...Ch. 15 - For the circuit in Fig. 15.106: a. Plot ZT and T...Ch. 15 - Prob. 31PCh. 15 - For the series R-L-C circuit in Fig. 15.108: Plot...Ch. 15 - For the series R-C circuit in Fig. 15.109:...Ch. 15 - For the circuit in Fig. 15.110, determine the...Ch. 15 - For the oscilloscope traces in Fig. 15.111:...Ch. 15 - For the network in Fig. 15.92 (usef=1kHz):...Ch. 15 - For the network in Fig. 15.93: Plot the impedance...Ch. 15 - For the network in Fig. 15.105: Find the rms...
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