Materials Science And Engineering
Materials Science And Engineering
10th Edition
ISBN: 9781119405498
Author: Callister, William D., Jr, RETHWISCH, David G., Jr., 1940- Author.
Publisher: Wiley,
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Chapter 7, Problem 20QAP
To determine

Explain why small-angle grain boundaries are not as effective in interfering with the slip process as are high angle grain boundaries.

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A company invested an amount of $85,000 to implement a project, and the expected receipts from this project during the 5 years were as follows: End the year 1 $10,000 | (العائدات) Receipts | 2 $25,000 3 $35,000 $45,000 5 $30,000 Find I.R.R. and determine if the project is desirable or not If the MARR was 16%? Q: An investor bought a factory for an amount of $10 million, the estimated useful life is 40 years and the estimated salvage value is $1 million, the factory's annual revenues are $500,000. Use the Sum years' digits method and Straight line method to find: a) Annual depreciation charge at the end of the 25th year b) Total depreciation charge at the end of the 25th year c) Book value at the end of the 25th year
Q1: For the Diesel cycle (constant pressure cycle) shown in figure above show that: - 1 17th = 1- ρ (-)-1 [1] -1)] Where (n) is the thermal efficiency of the Diesel cycle. (y) is the adiabatic index. (r) is the compression ratio. (p) Is the cut-off ratio. عماد داود عبود
Q7 An engine having a compression ratio of (15:1) operates on the ideal Dual combustion cycle. At the beginning of compression the air in the cylinder is at (0.986 bar) and (21 °C). After compression the heat energy supplied at constant volume increases the temperature to (1100 °C), and the heat energy supplied at constant pressure takes place over (4%) of the stroke. Calculate the maximum pressure, the maximum temperature and the cycle efficiency. Answers [69.1bar, 1870 °C, 63.8 % ]
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