Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 35P
Find the waveform for the voltage induced across a 5mH coil if the current through the coil is as shown in Fig. 11.100.
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For the circuit of Fig.11.78 composed of standard values:
A. Determine the time constant.
B. Write the mathematical expression for the current It after the switch is closed
C. Repeat part (b) for VL and VR
D. Determine il and VL at one three- and five-time constants.
E. Sketch the waveforms of iL,VL and VR.
For the circuit in fig .11.82
A. Write the mathematical expressions for the current IL and the voltage Vl following the closing of the switch.
B. Sketch the waveform of iL and VL for the entire period from initial value to steady-state level.
Please answer the problem below.
Give the waveform for the current of a 10-mH coil if the voltage acrossthe coil follows the pattern of the figure below if t = 0s and the curren IL = 4 mA
Chapter 11 Solutions
Introductory Circuit Analysis (13th Edition)
Ch. 11 - For the electromagnet in Fig. 11.75: a. Find the...Ch. 11 - For the inductor in Fig. 11.76, find the...Ch. 11 - a. Repeat Problem 2 with a ferromagnetic core with...Ch. 11 - For the inductor in Fig. 11.77, find the...Ch. 11 - An air-core inductor has a total inductance of 4.7...Ch. 11 - What are the inductance and the range of expected...Ch. 11 - If the flux linking a coil of 50 turns changes at...Ch. 11 - Determine the rate of change of flux linking a...Ch. 11 - How many turns does a coil have if 42 mV are...Ch. 11 - Find the voltage induced across a coil of 22 mH if...
Ch. 11 - For the circuit of Fig. 11.78 composed of standard...Ch. 11 - For the circuit in Fig. 11.79 composed of standard...Ch. 11 - For the network of Fig. 11.80. a. Write the...Ch. 11 - Give a supply of 18 V, use standard values to...Ch. 11 - For the circuit in Fig. 11.82: a. Write the...Ch. 11 - In this problem, the effect of reversing the...Ch. 11 - For the network of Fig. 11.84: a. Find the...Ch. 11 - Prob. 18PCh. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - For the network in Fig. 11.88: a. Determine the...Ch. 11 - For the network in Fig. 11.89: a. Write the...Ch. 11 - Prob. 23PCh. 11 - For Fig. 11.91: a. Determine the mathematical...Ch. 11 - For Fig. 11.92: a. Determine the mathematical...Ch. 11 - For the network in Fig. 11.93, the switch is...Ch. 11 - The switch in Fig. 11.94 has been open for a long...Ch. 11 - Prob. 28PCh. 11 - The switch for the network in Fig. 11.96 has been...Ch. 11 - The switch in Fig. 11.97 has been closed for a...Ch. 11 - Given iL=100mA(1e-t/20ms) a. Determine iLatt=1ms....Ch. 11 - a. If the measured current for an inductor during...Ch. 11 - The network in Fig. 11.98 employs a DMM with an...Ch. 11 - Find the waveform for the voltage induced across a...Ch. 11 - Find the waveform for the voltage induced across a...Ch. 11 - Prob. 36PCh. 11 - Find the total inductance of the circuit of Fig....Ch. 11 - Find the total inductance for the network of Fig....Ch. 11 - Reduce the network in Fig. 11.104 to the fewest...Ch. 11 - Reduce the network in Fig. 11.105 to the fewest...Ch. 11 - Reduce the network of Fig. 11.106 to the fewest...Ch. 11 - For the network in Fig. 11.107: a. Write the...Ch. 11 - For the network in Fig. 11.108: a. Write the...Ch. 11 - For the network in Fig. 11.109. a. Find the...Ch. 11 - Find the steady-state currents I1 and I2 for the...Ch. 11 - Find the steady-state currents and voltages for...Ch. 11 - Find the steady-state currents and voltages for...Ch. 11 - Find the indicated steady-state currents and...Ch. 11 - Prob. 49PCh. 11 - Using PSpice or Multisim, verify the results of...Ch. 11 - Using the PSpice or Multisim, find the solution to...Ch. 11 - Using PSpice or Multisim, find the solution to...Ch. 11 - Using PSpice or Multisim, verify the results of...
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- When a current of 1A flows in a coil having 1450 turns. If the coil inductance is 900 mH, the flux linking with the coil in mWb =arrow_forwardAn e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be (a) 64 A/s (b) 32 A/s (c) 16 A/s (d) 4 A/sarrow_forwardA capacitor drawing 4 kvar is placed in parallel with the electro-magnet that draws 3 kW of active power and 4 kvar of reactive power.. a. Calculate the new value of apparent power b. What is the new value of reactive power? c. What is the value of active power? d. What is the new power factor?arrow_forward
- ww A current of 10 A flows in a coil having 125 turns. If the coil inductance is 50 mH, the flux linking A10 with the coil isarrow_forward6. A coil draws 1875 watts when connected to a 150 V DC source. It consumes 3072 watts when used on 240 V, 60 Hz AC source. Find the inductance of the coil. Ans. 0.0239 Harrow_forward1. Calculate the coil inductance when a current of 4A in a coil of 800 turns produces a flux of 5mWebs linking with the coil.arrow_forward
- Determine the inductive reactance for the coil of 2mH used for DC supply.arrow_forwardA coil takes 2.5 A, when connected across 200V, 50 Hz main. The power consumed by the coil is found to be 400 W. Calculate resistance and inductance of the coil.arrow_forwardA coil rated 300 Watts, 230 Volts, 60 Hz has a resistance of 70 Ω. What is the inductance of the coil in mH?arrow_forward
- EXAMPLE 11.7 Switch S, in Fig. 11.51 has been closed for a long time. At 1 = 0 s, S, is opened at the same instant that S, is closed to avoid an interruption in current through the coil. a. Find the initial current through the coil. Pay particular attention to its direction. b. Find the mathematical expression for the current i, following the closing of switch S,. c. Sketch the waveform for i,. 486 ||| INDUCTORS S (t 0 s) (1 = 0 s) R2 8.2 k I kN 12 mA R, = 2.2 k2 680 mH E 6 V o 000arrow_forwardA coil has a resistance of 75 ohms and an inductance of 1.4H. When the applied voltage is 240V, at what frequency is the current 0.3A? 87.67Hz 93.25Hz 92.34Hz 90.55Hzarrow_forwardWhat will be the value of coupling factor between two coils, when the self inductnce of each coil is 30 mH and the mutual Inductance between them is 60 mH ?arrow_forward
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