Connect 1 Semester Access Card For Electric Motors And Control Systems
2nd Edition
ISBN: 9781259550195
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Question
Chapter 4.1, Problem 11RQ
To determine
The manner in which the reversing action is accomplished when a drum switch is used for starting and reversing a three-phase squirrel cage motor.
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Students have asked these similar questions
The circuit shown below on the left has the following parameters:
V₁ = 5 V.
R₁ = 40,
R₂ = 40,
α = 0.1.
This circuit can be replaced by an equivalent circuit shown below on the right such that the voltage and current received by an arbitrary load resistor RL, are identical
when connected to either circuits.
Determine the value of the resistor R (in ) in the equivalent circuit.
R₁
Rx
R2
R₁
Vx
R₁
Vi
απ.
b
1. Consider the following a unity feedback control system.
R(s) +
E(s)
500(s+2)(s+5)(s+6)
s(s+8)(s+10)(s+12)
-Y(s)
Find the followings:
a) Type of the system
b) Static position error constant Kp, Static velocity error constant Ry and Static
acceleration error constant Ka
c) Find the steady-state error of the system for (i) step input 1(t), (ii) ramp input t 1(t),
(iii) parabolic input t² 1(t).
2. Repeat the above problem for the following system.
R(s) + E(s)
500(s + 2)(s + 5)
(s+8)(s+ 10)(s+12)
Y(s)
3. Repeat the above problem for the following system.
R(s) +
E(s) 500(s+2)(s+4)(s+5)(s+6)(s+7)
s²(s+8)(s+10)(s+12)
Y(s)
4. Consider a unity (negative) feedback control system whose open-loop transfer
function is given by the following.
2
G(s) =
s³ (s + 2)
Find the steady-state error of the system for each of the following inputs.
=
a) u(t) (t²+8t+5) 1(t)
b) u(t) = 3t³ 1(t)
c) u(t) (t+5t² - 1) 1(t)
=
Chapter 4 Solutions
Connect 1 Semester Access Card For Electric Motors And Control Systems
Ch. 4.1 - Prob. 1RQCh. 4.1 - Prob. 2RQCh. 4.1 - What do the terms normally open and normally...Ch. 4.1 - The types of enclosures used to house motor...Ch. 4.1 - Prob. 5RQCh. 4.1 - Compare the operation of momentary and maintained...Ch. 4.1 - What is the OSHA requirement for resetting...Ch. 4.1 - Prob. 8RQCh. 4.1 - Explain how a push-to-test pilot light operates.Ch. 4.1 - Compare the way in which pushbutton and selector...
Ch. 4.1 - Prob. 11RQCh. 4.2 - Define the term mechanically operated switch.Ch. 4.2 - In what way are limit switches normally actuated?Ch. 4.2 - A control application calls for an NC held open...Ch. 4.2 - List four common types of limit switch operator...Ch. 4.2 - Prob. 5RQCh. 4.2 - Prob. 6RQCh. 4.2 - For what types of machine control applications are...Ch. 4.2 - How does a fluid capillary tube temperature switch...Ch. 4.2 - Prob. 9RQCh. 4.2 - Prob. 10RQCh. 4.3 - In general, how do sensor pilot devices operate?Ch. 4.3 - What is the main feature of a proximity sensor?Ch. 4.3 - List the main component of an inductive proximity...Ch. 4.3 - Explain the term hysteresis as it applies to a...Ch. 4.3 - How is a two-wire sensor connected relative to the...Ch. 4.3 - In what way is the sensing field of a capacitive...Ch. 4.3 - For what type of target would a capacitive...Ch. 4.3 - Prob. 8RQCh. 4.3 - Name the three most common scan techniques for...Ch. 4.3 - What are the advantages of fiber optic sensing...Ch. 4.3 - Outline the principle of operation of a Hall...Ch. 4.3 - Outline the principle of operation of an...Ch. 4.3 - List the four basic types of temperature sensors...Ch. 4.3 - Compare the way in which a tachometer and magnetic...Ch. 4.3 - Outline the principle of operation of an optical...Ch. 4.3 - What approach is usually taken to measurement of...Ch. 4.3 - Prob. 17RQCh. 4.4 - Define the term actuator as it applies to an...Ch. 4.4 - In what ways are electromagnetic relays employed...Ch. 4.4 - Prob. 3RQCh. 4.4 - Prob. 4RQCh. 4.4 - Prob. 5RQCh. 4.4 - Prob. 6RQCh. 4.4 - Prob. 7RQCh. 4.4 - Prob. 8RQCh. 4.4 - Prob. 9RQCh. 4.4 - What is the basic difference between an open-loop...Ch. 4.4 - Prob. 11RQCh. 4.4 - Prob. 12RQCh. 4.4 - In what way docs a double-break contact differ...Ch. 4.4 - Prob. 14RQCh. 4.4 - Prob. 1TCh. 4.4 - Prob. 2TCh. 4.4 - Prob. 4TCh. 4.4 - Prob. 5TCh. 4.4 - A through-beam photoelectric sensor appears to be...Ch. 4.4 - Prob. 1DTCh. 4.4 - Prob. 2DTCh. 4.4 - Prob. 3DTCh. 4.4 - What does the range adjustment on a float switch...Ch. 4.4 - A stepper motor cannot be bench-checked directly...
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