
Electric Machinery and Power System Fundamentals
1st Edition
ISBN: 9780072291353
Author: Stephen J. Chapman, Stepehn J. Chapman
Publisher: McGraw-Hill Companies, The
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Chapter 3, Problem 3.2Q
To determine
The reason for the reversal of the direction of the rotating magnetic field when the supply phases are reversed.
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P7.2
The capacitors in the circuit shown below have no energy stored in them and then switch "A"
closes at time t=0. Switch "B" closes 2.5 milliseconds later. Find v(t) across the 6 μF
capacitor for t≥ 0.
500 Ω
B
4 µF
20 V
6 µF 7
Σ2 ΚΩ
25 mA
+
· με
Q1: If x[n] is a discrete signal and represented by the following
equation, what is the value of x[0] and X[-2]
Q2:
{x[n]}={-0.2,2.2,1.1,0.2,-3.7,2.9,...}
a- Assuming that a 5-bit ADC channel accepts analog input ranging
from 0 to 4 volts, determine the following:
1- number of quantization levels;
2-step size of the quantizer or resolution;
3- quantization level when the analog voltage is 1.28 volts.
4- binary code produced by the ADC.
5- quantization error.
b- Determine whether the linear system is time invariant or not?
1 1
y(n) = x(n)
Q3: Evaluate the digital convolution of the following signals using
Graphical method. Find: y(0) to y(3)
Q4:
2, k = 0,1,2
2, k = 0
h(k)
0
1, k = 3,4 and x(k)
elsewhere
=
1,
k = 1,2
0
elsewhere
The temperature (in Kelvin) of an electronic component can be
modelled using the following approximation:
T(t) [293+15e-Ju(t)
A digital thermometer is used to periodically record the component's
temperature, taking a sample every 5 seconds.
1- Represent the…
Chapter 3 Solutions
Electric Machinery and Power System Fundamentals
Ch. 3 - What is the principal difference between a...Ch. 3 - Prob. 3.2QCh. 3 - Prob. 3.3QCh. 3 - What is the equation for the induced torque in an...Ch. 3 - The simple loop rotating in a uniform magnetic...Ch. 3 - Prob. 3.2PCh. 3 - The first ac power system in the United States ran...Ch. 3 - A three-phase, Y-connected, four-pole winding is...Ch. 3 - A three-phase, -connected, six-pole winding is...Ch. 3 - A three-phase, Y-connected, 60 Hz, two-pole...
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