Electrical Wiring Residential
19th Edition
ISBN: 9781337101837
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 19.1, Problem 20R
Proper pressure of the submersible pump system is maintained by a ______________
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Problem 1: Two-Force Equilibrium
A 12 kg traffic light is suspended by two cables
attached to a ceiling. Determine the force in Cable 1
(AB) and Cable 2 (AC). In other words, determine the
tension in each cable, assuming the system is in static
equilibrium.
B
If the Z-axis changes, what is the effect
A circularly polarized wave, traveling in the +z-direction, is received by an elliptically
polarized antenna whose reception characteristics near the main lobe are given approx-
imately by
E₁ = (2â, + jâ] f(r. 8. d)
Find the polarization loss factor PLF (dimensionless and in dB) when the incident wave
is
(a) right-hand (CW)
(b) left-hand (CCW)
An elliptically polarized wave traveling in the negative z-direction is received by a circularly polarized
antenna. The vector describing the polarization of the incident wave is given by Ei= 2ax + jay .Find the
polarization loss factor PLF (dimensionless and in dB) when the wave that would be transmitted by the
antenna is (a) right-hand CP (b) left-hand CP.
Medium 1 is a lossless dielectric (ε₁=ε,ε, μ₁=μ₁, σ₁=0)
Medium 2 is a lossless dielectric (ε=&&₂, μ=μ₁, σ₁=0)
[бг Мо о =
= 0]
[2 Mo σ₂ = 0]
E₁ (z) = Ele² + Пe+jB₁²]
E2 (z) = E Te² and
tot
= constant
1. For the case εr1 = 1, &r2= 16, E₁x=1 V/m and a frequency f = 750 MHz determine:
λι
=
n₁ =
22 =
n2=
r =
T=
2. The magnitude |E1 tot (z)| will show an interference pattern in region 1 as:
E˜(z)=E,{1+Te®®]e¯MS =E||{1+Te^^^^\]e=##} | = |E|+Texp(j)
For an incident field E₁x=1 V/m SKETCH the magnitude of E1 tot (z)| and |E20 (z) on the graph
below. Plot the values at 2/4 increments and sketch between. What is the SWR?
Chapter 19 Solutions
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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- 11-2) Now consider that white noise (i.e., noise with a PSD that is constant with frequency) is introduced in the channel of the system described in the previous problem. An ideal low pass filter is used at the receiver input to reduce the noise as much as possible, while transmitting the desired signal. (a) By what factor should the cutoff frequency of the noise reduction filter be reduced in the 16-PAM case, compared to binary? (b) By what factor will the noise power at the decision circuit be reduced in the 16-PAM case? (c) By what factor will the noise amplitude at the decision circuit be reduced in the 16-PAM case? (d) To obtain the same symbol error rate for 16-PAM as for binary, how should the minimum level spacing for 16-PAM compare to binary? (e) If the 16-PAM level spacing is adjusted according to part (d) above, by what factor will the average signal power be increased in the 16-PAM case, compared to binary?arrow_forward11-1) similar to Lathi & Ding, Prob. P.6.7-5 Data at a bit rate Rb must be transmitted using either binary NRZ polar signaling or 16-ary PAM NRZ polar signaling. (a) By what factor will the symbol rate be reduced in the 16-PAM case? (b) By what factor will bandwidth required from the (lowpass) channel be reduced in the 16-PAM case? (c) Assuming the minimum spacing between pulse levels must be the same in both cases, by what factor will the average power be increased in the 16-PAM case? [Hint: take the pulse amplitudes to be ±A in the binary case, and ±A, ±3A, ±5A,..., ±154, and recall that scaling pulse amplitude by a factor k scales the pulse energy by a factor R². Assume that the data is random, so that all 16 levels are equally likely, and that the same pulse shape is used in both cases.] Warning: Solutions to the textbook problem that are posted online are mostly wrong. Work it out for yourself.arrow_forward11-3) similar to Lathi & Ding, Prob. P.6.8-1 Consider the carrier modulator shown in the figure below, which transmits a binary carrier signal. The baseband generator uses polar NRZ signaling with rectangular pulses. The data rate is 8 Mbit/s. (a) If the modulator generates a binary PSK signal, what is the bandwidth of the modulated output? (b) If the modulator generates FSK with the difference fel - fco = 6 MHz (cf. Fig 6.32c), determine the modulated signal bandwidth. Binary data source Baseband signal generator Modulated output Modulator N-E---arrow_forward
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- For the transistor amplifier shown, R₁-11kQ, R2=6kQ, Rc=2kQ, RE-3kQ and R₁=2k0. (i) Draw d.c. load line (ii) Determine the DC operating point (iii) Draw a.c. load line. Assume V_BE = 0.7 V. and determine the new operating point + Vcc = 15 V RC Cc Cin R1 wwwwww wwwww R₁₂ RE CE RLarrow_forwardthe first part is the second part write your answer such as: (AND, OR, INVERTER, NAND, NOR) D₁ AK D, R₁ B K First Part? the third part is , and the total are R4 R7 Output R5 R₁ T R6 R3 -UBB Second Part? Third Part? Total?arrow_forwardA multistage amplifier has six stages each of which has a power gain of 40. what is the - Total gain of the amplifier in db ? ii- If the negative feedback of 15db is employed, find the resultant gainarrow_forward
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