Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN: 9781337399128
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 4, Problem 25RQ
How many digits will the
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Table of Measurements and Results:
Reading m/s
Ji-
a (wh
Nu h
Re
Nu Error%
(C) (°C)
2
1
Discussion:
1-Estimate the heat transfer and experimental value of the heat transfer
coefficient hex with its unit and Nusselt number Nu expl
2- Find the percentage error for the value of the experimental Nusselt number.
3-Draw the graph showing a relationship between the temperatures difference
(T-T) and theoretical and experimental value of Nusselt number.
4-The forced convection heat transfer coefficient of a plate depends on which
of the following:
a-gravity.
b-velocity of fluid.
e-conductivity of fluid.
d-conductivity of plate material.
Experiment: Internal Forced convenction Heat trovate on now through t
objectives. Study the convection heat transfer of air flow through stage
Calculations.
Q & (T-T)
Vary Re
Q. heup A (TT)
(T. Te-T
ASPL
Nep
Re
117
RITT
14
'
14
If AE = 1.6 m, ED = CD = 1.9 m and F = 3.1 kN, then find the magnitude of the force acting in EB.
B
30°
30°
C
E
D
ED m
DC m
♥F KN
Assume multiple single degree of freedom systems with natural periods T ∈ [0.05, 2.00] seconds with in-
crement of period dT = 0.05 seconds. Assume three cases of damping ratio: Case (A) ξ = 0%; Case (B)
ξ = 2%; Case (C) ξ = 5%. The systems are initially at rest. Thus, the initial conditions are u(t = 0) = 0 and
̇u(t = 0) = 0. The systems are subjected to the base acceleration that was provided in the ElCentro.txt file
(i.e., first column). For the systems in Case (A), Case (B), and Case (C) and for each natural period compute
the peak acceleration, peak velocity, and peak displacement responses to the given base excitation. Please,
use the Newmark method for β = 1/4 (average acceleration) to compute the responses. Create three
plots with three lines in each plot. The first plot will have the peak accelerations in y-axis and the natural
period of the system in x-axis. The second plot will have the peak velocities in y-axis and the natural period
of the system in x-axis. The third plot…
Chapter 4 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 4 - What are the three most common electric meters...Ch. 4 - Prob. 2RQCh. 4 - What do most analog meters use to facilitate the...Ch. 4 - How does an ammeter work?Ch. 4 - What are the two types of ammeters? Which type is...Ch. 4 - Prob. 6RQCh. 4 - How can a very small ampere draw be measured with...Ch. 4 - If a conductor was wrapped around the jaws of a...Ch. 4 - Explain the operation of an analog voltmeter.Ch. 4 - Air-conditioning or refrigeration equipment can...
Ch. 4 - Prob. 11RQCh. 4 - What precaution should be taken when using an...Ch. 4 - Prob. 13RQCh. 4 - What is a short circuit?Ch. 4 - Prob. 15RQCh. 4 - What factors should be considered when purchasing...Ch. 4 - Match the following terms.Ch. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - An in-line ammeter must be connected to a circuit...Ch. 4 - What is the difference between an analog meter...Ch. 4 - Give three advantages of a digital electric meter.Ch. 4 - What basic concept is used in a digital meter to...Ch. 4 - What is the basic accuracy of most analog and...Ch. 4 - How many digits will the 312- and 412-digit...Ch. 4 - Prob. 26RQCh. 4 - The ohmmeter differs from other types of meters in...Ch. 4 - Compare the digital and analog types of electric...
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