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 17P

For Problems 15−28, perform the indicated conversion of units. (Refer to Appendix 16 for conversion factors.) Express the results with the appropriate prefix as illustrated in Tables 1−3 and 1−4.

17. Convert the torque developed by a motor of 12550 lb·in toN·m.

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Please solve correctly, Show unit conversion (I don't know why there is conversion factor 1488 in the numerator)
Completely solve and box the final answer. Please show the units to show the unit cancellations. Write legibly 8. Calculate the brake thermal efficiency of a supercharged 4-cylinder, four stroke cycle Diesel engine with a bore and stroke of 3.94” x 5.91”. The compression ratio is 14. Using a brake torque analysis, the dynamometer reads a scale of 143.3 pounds with 13.8” arm at 440 rpm. For a period of 14 minutes of test, 1.433 pounds of fuel with 40,702 KJ/kg heating value are completely burned with air with fuel-air ratio of 0.07.
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Machine Elements in Mechanical Design (6th Edition) (What's New in Trades & Technology)

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