Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 14, Problem 10ASRQ
While diagnosing the cause of air bubbles in the coolant recovery tank: Technician A checks for a bad head gasket. Technician B checks the radiator cap. Who is correct?
- Technician A
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Question L: A chain drive has information per the table below. Use only this table for this question! You
will use Table 7-14 to select components for the chain drive.
What is the length of the chain in inches that you should purchase for this application? (First, round up to
an even number of pitches for the chain length. Then calculate the chain length in inches. (Type in an
integer.)
Chain pitch: p =
0.500
inches
Roller chain size number =
40
Motor speed n₁ =
500
rpm
Design power
3.50
hp
Speed ratio: VR =
2.0
Nominal Center Distance: C =
24.00
inches
TABLE 7-14 Horsepower Ratings-Single-Strand Roller Chain No. 40
No. of
0.500-in pitch
Rotational Speed of small sprocket in rpm
teeth
10
25
11
0.06 0.14
12
0.06 0.15
13
0.07 0.16
14
15
0.08 0.19
16
0.08 0.20
0.39 0.75
17
0.09 0.21
0.41 0.80
18
20
0.09 0.22
19 0.10 0.24
0.10 0.25 0.48
21
1.12
22 0.11 0.27 0.53 1.03 1.81 201
23 0.12 0.28 0.56 1.08 1.90 2.10
24 0.12 0.30 0.58
1.98 2.19
25 0.13 0.31 0.60 1.17 2.06 2.28 3.36 5.49
50 100 180…
Question K: A chain drive has information per the table below. Use only this table for this question! You
will use Table 7-14 to select components for the chain drive.
How many teeth are in the large sprocket? (Type in an integer.)
Chain pitch: p=
0.500
inches
Roller chain size number =
40
Motor speed n₁ =
500
rpm
Design power =
3.50
hp
Speed ratio: VR =
2.0
Nominal Center Distance: C =
24.00
inches
No. of
teeth
TABLE 7-14 Horsepower Ratings-Single-Strand Roller Chain No. 40
0.500-in pitch
Rotational Speed of small sprocket in rpm
10
25 50 100 180
200 300 500 700 900 1000
11
12
0.06 0.14 0.27 0.52 0.91 1.00
0.06 0.15
0.99
1.48
2.42
3.34 4.25 4.70
0.29 0.56
1.09
1.61
2.64
3.64 4.64 5.13
13
0.07 0.16 0.31 0.61
1.07
1.19 1.75
2.86
3.95 5.02 5.56
14
0.07 0.17 0.34 0.66
1.15
1.28
1.88
3.08
4.25 5.41 5.98
15
0.08 0.19
0.36 0.70
1.24 1.37
2.02
3.30
4.55
5.80 6.41
16
0.08 0.20 0.39
0.75
1.32 1.46 2.15 3.52
4.86 6.18 6.84
17
0.09 0.21 0.41 0.80 1.40 1.55
18
0.09 0.22 0.43 0.84
19
0.10 0.24 0.46…
Question D: Dimensions, material properties, and certain constants for a rod are shown in the table below.
Use only this table for this question! Other data can be obtained from the figures and tables shown below.
Input Data:
Shaft material specification:
Machined Steel
Type of Stress:
Reversed, repeated bending
Tensile strength: s₁ =
825
MPa
Reliability:
99.0%
Material factor: C
0.80
Type of stress factor: Cst
Shaft diameter: D=
1.00
Use 0.80 for cast steel
Use 1.00 for bending stress
45
mm
TABLE 5-3 Approximate Reliability
Desired reliability
Factors, CR
CR
0.50
1.0
0.90
0.90
0.99
0.81
0.999
0.75
Chapter 14 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 14 - What is the most efficient way to increase a...Ch. 14 - True or False? Oil pressure is determined by...Ch. 14 - Describe the simple test used to determine whether...Ch. 14 - Which of the following is a function of the...Ch. 14 - What is ECD and what can result from it?Ch. 14 - True or False? To eliminate the drain of engine...Ch. 14 - For every pound of pressure put on engine coolant,...Ch. 14 - Which is not a typical method of driving the water...Ch. 14 - Which of the following is not an effective way to...Ch. 14 - Explain why a pressure relief valve is needed in...
Ch. 14 - List five problems that can be caused by engine...Ch. 14 - Cooling system hoses should be replaced when they...Ch. 14 - True or False? The presence of air in the cooling...Ch. 14 - Which of the following is not a true statement...Ch. 14 - Describe the procedure for using air bleed valves...Ch. 14 - Technician A uses a feeler gauge and straightedge...Ch. 14 - Technician A says that excessive engine oil...Ch. 14 - While checking for conditions that might cause...Ch. 14 - When installing an oil pump in an engine...Ch. 14 - Technician A says that if the PCV valve or...Ch. 14 - While bleeding air from a cooling system:...Ch. 14 - While diagnosing an engine that overheats after...Ch. 14 - While performing a cooling system service on a...Ch. 14 - While discussing the causes of extreme engine...Ch. 14 - While diagnosing the cause of air bubbles in the...
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- Use only the following information for this question. The available V-belt sizes are given in Table 7-2 from the textbook as shown below. Your motor is running at 1160 rpm and your design power is 3 hp. Figure 7-13 is shown below to help you select a V-belt. The small V-belt pulley has a diameter of 8.00 inches, and the speed ratio between the driving and driven pulley is 1.50. Your machine needs a pulley center distance of roughly 26.0 inches. What is the maximum center distance in inches that you could use in this application, if the machine design warranted it? (Type in a one-decimal numberarrow_forwardDimensions, material properties, and certain constants for a rod are shown in the table below. Use only this table for this question! Other data can be obtained from the figures and tables shown belowarrow_forwardUse only the following information for this question. The available V-belt sizes are given in Table 7-2 from the textbook as shown below. Your motor is running at 1160 rpm and your design power is 3 hp. Figure 7-13 is shown below to assist you in selecting a V-belt. The small V-belt pulley has a diameter of 8.00 inches, and the speed ratio between the driving and driven pulleys is 1.40. Your machine needs a pulley center distance of roughly 24.0 inches. What is the belt length in inches that you should select from Table 7-2? (Type in an integer.) Note: Select a belt length from Table 7-2 that is closest to the one you calculated. Type in a number corresponding to the selected belt lengtharrow_forward
- Question G: Use only the following information for this question. A high-torque AC motor running a centrifugal pump is driving the small pulley of a V-Belt drive. The pump operates 10 hours per day. The motor is rotating at 3550 rpm, 70 lb-in torque, and the V-belt is moving at 3,800 feet/minute. The speed ratio between the driving and driven pulley is 1.80. Service Factors are shown in the table below. What is the design power of the system in horsepower? (Type in a two-decimal number) Note: To calculate the design power of the system, you need to use the service factor TABLE 7-1 V-Belt Service Factors' Driven machine type Smooth loading Agitators, light conveyors centrifugal pumps fans and blowers under 10 HP (7.5 kW) Driver type AC motors: Normal torque DC motors: Shunt-wound Engines: Multiple-cylinder AC motors: High torque³ DC motors: Series-wound, or compound-wound Engines: 4-cylinder or less 15h per day per day per day 15h per day 1.3 Light shock loading 1.1 1.2 1.3 1.2 1.3 1.4…arrow_forwardQuestion E: Imagine that the diving board at your local swimming pool is made of cold drawn steel, and that we model it as a cantilever beam. We model the cyclic loading as a person jumping off the diving boardarrow_forward: Use only the following information for this question. A bevel gear drive has the following attributes: The pinion has 20 teeth, the gear ratio is 3.250, the diametral pitch is 10, and the pressure angle is 20°. What is the pitch cone angle of the pinion in degrees? (Type in a one-decimal number.arrow_forward
- Question A: Use only the following information for this question. A solid circular link in a packaging machine mechanism has a diameter of 0.250 inches. It is subjected to a load that varies from a tensile force of 2100 lb to a tensile force of 1500 lb. What is the alternating stress in psi? (Type in an integer.)arrow_forwardUse only the following information for this question. A high-torque AC motor running a centrifugal pump is driving the small pulley of a V-Belt drive. The pump operates 10 hours per day. The motor is rotating at 1175 rpm, 150 lb-in torque, and the V-belt is moving at 2,770 feet/minute. The speed ratio between the driving and driven pulley is 1.75. Service Factors are shown in the table below. What is the diameter in inches of the larger pulley? (Type in a two-decimal numberarrow_forwardQuestion B: Use only the following information for this question. A solid circular link in a packaging machine mechanism has a diameter of 0.125 inches. It is subjected to a load that varies from a tensile force of 600 lb to a tensile force of 200 lb. What is the stress ratio? (Type in a two-decimal number.)arrow_forward
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