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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Textbook Question
Chapter 6, Problem 19RQ
The compressor and condenser fan motor start __________.
- a. at separate times
- b. at the same time
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25 mm
10 mm
250 mm
a
15 mm
250 mm
0.3 m
(300 mm)
A
n
65 kN 90 kN 65 kN
B
PROBLEM 6.11
For the beam and loading shown,
consider section n-n and determine (a)
the largest shearing stress in that section,
(b) the shearing stress at point a.
15 mm
0.6 m
0.6 m
0.6 m 0.6 m
A
000
RA 1.8 m
P
W610 X 155
C
B
2.7 m-
RC
PROBLEM 6.17
For the wide-flange beam with the loading shown, determine the
largest load P that can be applied, knowing that the maximum
normal stress is 165 MPa and the largest shearing stress using the
approximation T = VIA web is 100 MPa.
PROBLEM 6.31
The built-up beam shown is made up by gluing together five
planks. Knowing that the allowable average shearing stress in the
glued joints is 400 kPa, determine the largest permissible vertical
shear in the beam.
50 mm
100 mm
50 mm
125 50 125
mm mm mm
Chapter 6 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 6 - Why should an air-conditioning technician learn to...Ch. 6 - Briefly explain the layout of a schematic diagram.Ch. 6 - Most schematic diagrams are made up of _____. a....Ch. 6 - Schematic diagrams break the wiring of control...Ch. 6 - Draw the symbols for the following components. a....Ch. 6 - What is the name of an appliance that is used to...Ch. 6 - What is the position of the control switch if the...Ch. 6 - Prob. 8RQCh. 6 - True or False: The evaporator fan motor is...Ch. 6 - What electrical component initiates the defrost...
Ch. 6 - The thermostat of the commercial freezer in Figure...Ch. 6 - What is the purpose of the fan switch in Figure...Ch. 6 - If the temperature in the furnace schematic shown...Ch. 6 - What is the purpose of the transformer in Figure...Ch. 6 - True or False: The system in Figure 6.28 is using...Ch. 6 - The HP and LP switches are connected in __________...Ch. 6 - The contactor is controlled by __________. a. the...Ch. 6 - With the fan switch in the on position, the indoor...Ch. 6 - The compressor and condenser fan motor start...Ch. 6 - The compressor and condenser fan motor are...Ch. 6 - Prob. 21RQCh. 6 - Prob. 22RQCh. 6 - Explain why the lockout relay coil energizes...Ch. 6 - True or False: The first- and second-stage cooling...Ch. 6 - True or False: A two-stage cooling thermostat...Ch. 6 - What is the purpose of the defrost cycle of a heat...Ch. 6 - What two factors initiate the defrost mode in the...Ch. 6 - What type of thermostat is used with the heat pump...Ch. 6 - Explain the operation of the switchover valve and...Ch. 6 - The reversing-valve solenoid is energized on the...Ch. 6 - The defrost cycle of the heat pump schematic in...Ch. 6 - What is a pump-down system and why is it used in...
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- 32 mm 32 mm с b 32 mm 32 mm a PROBLEM 6.40 The extruded beam shown has a uniform wall thickness of 3 mm. Knowing that the vertical shear in the beam is 9 kN, determine the shearing stress at each of the five points indicated.arrow_forwardPROBLEM 6.39 6.39 The vertical shear is 5.3 kN in a beam having the cross section shown. Determine (a) the distance d for which Ta Tb, (b) the corresponding shearing stress at points a and b. = 12 mm |d→←125. mm 200 mm 12 mm b d. 100 mmarrow_forward100 kN 100 kN In A In 500 m 250 m 500 m B ΤΟΠΟΙΟΣ 180 mm 20 mm b 38 mm a -200 mm $381 mm 20 mm PROBLEM 6.23 For the beam and loading shown in Problem 6.22, determine the largest shearing stress in section n-n. PROBLEM 6.22 For the beam and loading shown, consider section n-n and determine the shearing stress at (a) point a, (b) the shearing stress at point b. 20 mm→ karrow_forward
- 100 kN In A n 100 kN 0.5 m 0.5 m 0.25 m 20 mm 180 mm b B a 000 20 mm- 38 mm 38 mm PROBLEM 6.21 For the beam and loading shown, consider section n-n and determine the shearing stress at (a) point a, (b) the shearing stress at point b. 20 mm -200 mmarrow_forward450 mm In 600 mm. a 72 mm 72 mm 125 kN 72 mm 192 mm t = 6 mm PROBLEM 6.10 For the beam and loading shown, consider section n-n and determine (a) the largest shearing stress in that section, (b) the shearing stress at point a.arrow_forwardPROBLEM 6.38 = 6.38 The vertical shear is 5.3 kN in a beam having the cross section shown. Knowing that d 100 mm, determine the shearing stress (a) at point a, (b) at point b. 12 mm d→ 125 mm 200 mm 12 mm b 100 mmarrow_forward
- 1. (6%) Please sketch the distribution of shear stresses in a rectangular beam and determine where the maximum shear stress occurs. !! C りarrow_forward1. (15%) (a) Consider a narrow rectangular beam subjected to a shear force V. Determine where the maximum shearing stress will be occurred. (b) Give an example for which plane stress condition can be used (c) Fixed supports only prevent rotation. (True/False) (d) Roller supports only prevent translation in vertical direction. (True/False) (e) Ely"=-q (True/False)arrow_forwardA horizontal pipe network has a connection of three pipes of different diameters, where the flow in section 3 exits to the atmosphere. The following requirements are required: a) Outlet flow rate at point 3. b) Pressure at point 2. c) x and y components of the force the flow exerts on the connection. Continuity, momentum, and energy equationarrow_forward
- The expression "flush" comes from the fact that the first toilet tanks were quite high, and you literally had to flush the toilet to move the stopper and flush the water. If the water level inside the tank is 1.8 m high and the pipe diameter is 5 cm, determine the following: a) The velocity of the water entering the toilet. b) The force at the junction of the pipe and the toilet, which is required to prevent the pipe from coming out and spilling water onto the floor. (Continuity, momentum, and energy equation)arrow_forwardPlease help me with this question, show step by step this is an application of a dynamic engineering problem this problem is quite longarrow_forwardPlease help me with this question, show step by step this is an application of a dynamic engineering problem.arrow_forward
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