EBK ELECTRIC CIRCUITS
10th Edition
ISBN: 8220100801792
Author: Riedel
Publisher: YUZU
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Chapter 5, Problem 18P
a.
To determine
Mention the configuration of the given op amp circuit.
b.
To determine
Calculate the value of voltage
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2- Sketch the circuits in the Block 1, Block 2
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Iov
Vout
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Vouts
20
t
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t
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Block 2
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P-50HZ
25
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Block 3-2
2.2V 22V
2. A 3-phase, 75 MVA, 11-8 kV star-connected alternator with a solidly earthed neutral point has the fol-
lowing p.u. impedances based on rated phase voltage and rated phase current :
Positive phase sequence impedance
Negative phase sequence impedance
Zero phase sequence impedance
=
j 2 p.u.
=
j 0.16 p.u.
=
j 0.08 p.u.
Determine the steady-state fault current for the following: (i) 3-phase symmetrical short-circuit (ii) one
line-to-earth fault (iii) two line-to-earth fault. The generated e.m.f. per phase is equal to the rated voltage.
[(i)1840 A (ii) 4920 A (iii) 3580 A]
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Q1. With the help of a well-drawn diagram, explain concept map of an electromechanical
system modelling.
[20]
Q2. Separately-excited generator develops a no load emf of 150V at an armature spend of 20
rev/s and a flux per pole of 0.1 Wb. determine the generated emf when
a. The spend increases to 25rev/s and the pole flux remains unchanged.
b. The speed remains at 20 rev/s and the pole flux is decreased to 0.08Wb.
c. The speed increases to 24 rev/s and the pole flux is decreased to 0.07 Wb
Write short notes on the following term
a. Copper loss
b. Iron loss
c. Friction and Windage losses.
[20]
Chapter 5 Solutions
EBK ELECTRIC CIRCUITS
Ch. 5.2 - Assume that the op amp in the circuit shown is...Ch. 5.3 - The source voltage vs in the circuit in Assessment...Ch. 5.4 - Find vo in the circuit shown if va = 0.1 V and vb...Ch. 5.5 - Assume that the op amp in the circuit shown is...Ch. 5.6 - In the difference amplifier shown, vb = 4.0 V....Ch. 5.7 - The inverting amplifier in the circuit shown has...Ch. 5 - Prob. 1PCh. 5 - Replace the 2 V source in the circuit in Fig. P5.1...Ch. 5 - Find iL (in milliamperes) in the circuit in Fig....Ch. 5 - The op amp in the circuit in Fig. P5.4 is...
Ch. 5 - Find io in the circuit in Fig. P5.3 if the op amp...Ch. 5 - The op amp in the circuit in Fig. P5.5 is ideal....Ch. 5 - Prob. 7PCh. 5 - Design an inverting amplifier with a gain of 4....Ch. 5 - Design an inverting amplifier with a gain of 2.5,...Ch. 5 - The op amp in the circuit shown in Fig. P5.11 is...Ch. 5 - The op amp in the circuit in Fig. P5.10 is...Ch. 5 - The op amp in Fig. P5.12 is ideal.
What circuit...Ch. 5 - Refer to the circuit in Fig. 5.12, where the op...Ch. 5 - The op amp in Fig. P5.14 is ideal. Find vo if va =...Ch. 5 - Prob. 15PCh. 5 - Design an inverting-summing amplifier using a 120...Ch. 5 - Design an inverting-summing amplifier so...Ch. 5 - Prob. 18PCh. 5 - The op amp in the circuit of Fig. P5.18 is...Ch. 5 - Prob. 20PCh. 5 - Prob. 21PCh. 5 - Prob. 22PCh. 5 - Prob. 23PCh. 5 - The circuit in Fig. P5.24 is a noninverting...Ch. 5 - Prob. 25PCh. 5 - The op amp in the circuit of Fig. P5.25 is...Ch. 5 - The resistors in the difference amplifier shown in...Ch. 5 - Prob. 28PCh. 5 - Prob. 29PCh. 5 - The op amp in the adder-subtracter circuit shown...Ch. 5 - Select the values of Rb and Rf in the circuit in...Ch. 5 - The op amp in the circuit of Fig. P5.34 is...Ch. 5 - Prob. 33PCh. 5 - In the difference amplifier shown in Fig. P5.34,...Ch. 5 - Prob. 36PCh. 5 - Show that when the ideal op amp in Fig. P5.38 is...Ch. 5 - Assume that the ideal op amp in the circuit seen...Ch. 5 - The two op amps in the circuit in Fig. P5.40 are...Ch. 5 - Assume that the ideal op amp in the circuit in...Ch. 5 - The op amps in the circuit in Fig. P5.39 are...Ch. 5 - The circuit inside the shaded area in Fig. P5.41...Ch. 5 - Derive Eq. 5.31.
(5.31)
Ch. 5 - Prob. 44PCh. 5 - Prob. 45PCh. 5 - Repeat Problem 5.45 assuming an ideal op...Ch. 5 - Prob. 47PCh. 5 - The op amp in the noninverting amplifier circuit...Ch. 5 - Suppose the strain gages in the bridge in Fig....Ch. 5 - For the circuit shown in Fig. P5.50, show that if...Ch. 5 - Prob. 51PCh. 5 - Prob. 52PCh. 5 - Prob. 53P
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