Machine Elements in Mechanical Design (6th Edition) (What's New in Trades & Technology)
Machine Elements in Mechanical Design (6th Edition) (What's New in Trades & Technology)
6th Edition
ISBN: 9780134441184
Author: Robert L. Mott, Edward M. Vavrek, Jyhwen Wang
Publisher: PEARSON
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Chapter 1, Problem 21P

For Problems15−28, perform the indicated conversion of units. (Refer to Appendix 16 for conversion factors.) Express the results with the appropriate prefix as illustrated in Tables1−3 and 1−4.

21. What standard steel equal leg angle would have a cross-sectional area closest to (but greater than) 750 mm 2 ? See Appendix15 .

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16q  A slip gauge setting height  of 65.215mm is observed and an angle of  480 is found during the precise angle measurement of a workpiece in a workshop. Find the length of the Sine Bar used in mm= (Enter at-least 4 digits after decimal points)
Suppose that the length of the steel bar is measured by a number of different observers and following set of 11 measurements is recorded as set A (units mm): 398, 420, 394, 416, 404, 408, 400, 420, 396, 413, 330. Next the measurements are taken using different ruler to produce measurement set B: 409, 406, 402, 407, 405, 404, 407, 404, 407, 407, 408. It can be shown that the mean values set A and B are 409 and 406 respectively. Which of the two measurement sets A and B, and the corresponding mean value, should have most confidence in? why? Text
Ex. Find 9 f- 120mm 125mm !30m

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Machine Elements in Mechanical Design (6th Edition) (What's New in Trades & Technology)

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