EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 19.1, Problem 16R
What is the maximum ampere setting permitted for running overload protection of the 1-horsepower, 240-volt pump motor? ____________________
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Q1
Q2
A control system is described by the block diagram in Figure 1 where R(s) is reference
input and Y(s) is system output.
(a)
Find the transfer function Y(s)/R(s) using block diagram reduction.
(b) Determine the steady state output in response to the unit step input.
R(s) +
+
S
5
-~
$2
1
Y(s)
2s
s² +2
Figure 1
A PID controller is designed to control the robot leg, and the control system is shown
in Figure 2 where K is a positive gain.
(a)
Find the closed-loop transfer function (s)/R(s).
(b)
Use the Routh-Hurwitz stability criterion to determine the range of the parameter
K such that the closed-loop system is stable.
(s)
2
K
1+-+s
s² + 3s+2
S
R(s)
PID Controller
Robot Leg dynamics
Figure 2
Q3
(a)
For the digital control system given in Figure 3, by adding phantom samplers to
show that the z transfer function of the closed-loop system is given by
C(z)
R(z)
G(z)
1+ G(z) H₁H₂(z)
+
R(s)
G(s)
C(s)
H₂(s)
H₁(s)
Figure 3
(b)
The analogue compensator
5s + 1
D(s) =
0.4s +1
is implemented digitally with sampling period 0.2 seconds to control the depth of
a submarine system. Use the pole-zero mapping method to find a digital
approximation to the analogue compensator.
Chapter 19 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 19.1 - Does a jet pump have any electrical moving parts...Ch. 19.1 - Prob. 2RCh. 19.1 - Where is the jet of the pump located?...Ch. 19.1 - Prob. 4RCh. 19.1 - Prob. 5RCh. 19.1 - Prob. 6RCh. 19.1 - Prob. 7RCh. 19.1 - What is compressed in the water storage tank?...Ch. 19.1 - Explain the difference between a 2-wire...Ch. 19.1 - Prob. 10R
Ch. 19.1 - Why is a 240-volt motor preferable to a 120-volt...Ch. 19.1 - How many amperes does a 1-horsepower, 240-volt,...Ch. 19.1 - What size are the conductors used for this branch...Ch. 19.1 - Prob. 14RCh. 19.1 - What provides the running overload protection for...Ch. 19.1 - What is the maximum ampere setting permitted for...Ch. 19.1 - Prob. 17RCh. 19.1 - Because the controller contains the motor starting...Ch. 19.1 - Prob. 19RCh. 19.1 - Proper pressure of the submersible pump system is...Ch. 19.1 - Fill in the data for a 16-ampere electric motor,...Ch. 19.1 - The NEC is very specific in its requirement that...Ch. 19.1 - Does the NEC allow submersible pump cable to be...Ch. 19.1 - Must the disconnect switch for a submersible pump...Ch. 19.1 - A metal well casing (shall) (shall not) be bonded...Ch. 19.2 - Prob. 1RCh. 19.2 - A major hazard involved with water heaters is that...Ch. 19.2 - Prob. 3RCh. 19.2 - The heating elements in electric water heaters are...Ch. 19.2 - An 80-gallon electric water heater is energized...Ch. 19.2 - Prob. 6RCh. 19.2 - For residential water heaters, the Consumer...Ch. 19.2 - An 80-gallon electric water heater has 60F...Ch. 19.2 - Approximately how long would it take to produce...Ch. 19.2 - Two thermostats are generally used in an electric...Ch. 19.2 - a. How many heating elements are provided in the...Ch. 19.2 - When does the lower heating element operate?...Ch. 19.2 - Prob. 14RCh. 19.2 - Prob. 15RCh. 19.2 - Prob. 16RCh. 19.2 - a. If both elements of the water heater in this...Ch. 19.2 - a. How much power in watts would the two elements...Ch. 19.2 - A condominium owner complains of not getting...Ch. 19.2 - For a single, nonmotor-operated electrical...Ch. 19.2 - A 7000-watt resistance-type heating appliance is...Ch. 19.2 - Prob. 22R
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