EBK MATHEMATICS FOR MACHINE TECHNOLOGY
8th Edition
ISBN: 9781337798396
Author: SMITH
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 48, Problem 61A
To determine
(a)
The pitch diameter of the spur gear.
Expert Solution
Answer to Problem 61A
The pitch diameter is 117 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The pitch diameter is 117 mm.
To determine
(b)
The circular pitch of the spur gear.
Expert Solution
Answer to Problem 61A
The circular pitch is 20.4204 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The circular pitch is 20.4204 mm.
To determine
(c)
The outside diameter of the spur gear.
Expert Solution
Answer to Problem 61A
The outside diameter is 130 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The outside diameter is 130 mm.
To determine
(d)
The addendum of the spur gear.
Expert Solution
Answer to Problem 61A
The addendum is 6.5 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The addendum is 6.5 mm.
To determine
(e)
The working depth of the spur gear.
Expert Solution
Answer to Problem 61A
The working depth is 13 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The working depth is 13 mm.
To determine
(f)
The tooth thickness of the spur gear.
Expert Solution
Answer to Problem 61A
The thickness of the tooth is 10.21 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The thickness of the tooth is 10.21 mm.
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Habitat for Humanity International is a nonprofit organization dedicated to eliminating poverty housing worldwide. Suppose the following table contains estimates of activity times (in days) involved in the construction of a house that Habitat for Humanity is building.
Activity Optimistic Most Probable Pessimistic
A
6
7.0
8
B
7
8.0
9
C
7
7.5
11.5
D
7
9.0
10
E
6
7.0
9
F
3
4.0
5
(a) Compute the expected activity completion times and the variance for each activity. (Round your answers to two decimal places.)
Activity
Expected
Times
A
B
C
D
E
F
Variance
(b) An analyst determined that the critical path consists of activities B-D-F. Compute the expected project completion time and the variance of this path. (Round your answers to two decimal places.)
expected project completion time
variance of projection completion time
Chapter 48 Solutions
EBK MATHEMATICS FOR MACHINE TECHNOLOGY
Ch. 48 - Prob. 1ACh. 48 - Prob. 2ACh. 48 - Prob. 3ACh. 48 - Prob. 4ACh. 48 - Prob. 5ACh. 48 - Read the setting on the following 0.001-inch...Ch. 48 - Prob. 7ACh. 48 - Refer to the Decimal-Inch Spur Gears Table under...Ch. 48 - Prob. 9ACh. 48 - Prob. 10A
Ch. 48 - Prob. 11ACh. 48 - Refer to the Decimal-Inch Spur Gears Table under...Ch. 48 - Prob. 13ACh. 48 - Prob. 14ACh. 48 - Prob. 15ACh. 48 - Prob. 16ACh. 48 - Prob. 17ACh. 48 - Prob. 18ACh. 48 - Prob. 19ACh. 48 - Refer to the Decimal-Inch Spur Gears Table under...Ch. 48 - Prob. 21ACh. 48 - Prob. 22ACh. 48 - Prob. 23ACh. 48 - Prob. 24ACh. 48 - Prob. 25ACh. 48 - Prob. 26ACh. 48 - Prob. 27ACh. 48 - Refer to the Decimal-Inch Spur Gears Table under...Ch. 48 - Prob. 29ACh. 48 - Prob. 30ACh. 48 - Prob. 31ACh. 48 - Prob. 32ACh. 48 - Prob. 33ACh. 48 - Refer to the Decimal-Inch Spur Gears Table under...Ch. 48 - Refer to the Decimal-Inch Spur Gears Table under...Ch. 48 - Prob. 36ACh. 48 - Prob. 37ACh. 48 - Prob. 38ACh. 48 - Prob. 39ACh. 48 - Prob. 40ACh. 48 - Prob. 41ACh. 48 - Prob. 42ACh. 48 - Prob. 43ACh. 48 - Prob. 44ACh. 48 - Prob. 45ACh. 48 - Prob. 46ACh. 48 - Prob. 47ACh. 48 - Prob. 48ACh. 48 - Prob. 49ACh. 48 - Prob. 50ACh. 48 - Backlash is the amount that a tooth Space is...Ch. 48 - Prob. 52ACh. 48 - Prob. 53ACh. 48 - Prob. 54ACh. 48 - Prob. 55ACh. 48 - Prob. 56ACh. 48 - Prob. 57ACh. 48 - Prob. 58ACh. 48 - Prob. 59ACh. 48 - Prob. 60ACh. 48 - Prob. 61ACh. 48 - Prob. 62ACh. 48 - Prob. 63ACh. 48 - Prob. 64ACh. 48 - Prob. 65ACh. 48 - Prob. 66ACh. 48 - Prob. 67ACh. 48 - Prob. 68ACh. 48 - Prob. 69ACh. 48 - Prob. 70A
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