EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 19.2, Problem 22R
To determine
State which article of Code provides the requirement of a hermetic refrigerant motor compressor in heat pump water heaters.
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Consider the following transformer circuit assuming an ideal transformer. In this circuit
the signal generator will provide a 10-Volt peak-to-peak sinusoidal signal at a frequency
of 1.0 kHz. Assume that L₁ = 0.65 H, L2 = 0.00492 H (=4.92 mH) and that the coupling
constant = 0.99925.
+
VG1(
R1 1k
N1:N2
11.5:1
12
V1 N1
N2
V2
R2 8.2
1) Find the following using the theory presented in the prelab reading:
a) Start with Equations (2) of the prelab reading and show that the input impedance
to an ideal transformer is given by the equation for Z1 (=V1/11) in Equations (4) of
the prelab reading.
Equations (2) are: V₁ = joLI₁ + jœMI₂ and V₂ = j@MI₁ +j@L₂I₂
The equation for the input impedance is: Z₁ = 1½ = jwL₁ +
(WM)²
jwL₂+ZL
b) Assuming that Z is a real impedance, find the equations for the real and
imaginary parts of Z1.
c) Use your equations from part (b) to calculate the value of the input impedance
(Z) at an operating frequency of 200 Hz. Assume that the load impedance is 8.2
Ohms…
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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