MATERIALS SCIENCE AND ENGINEERING: INTRO
MATERIALS SCIENCE AND ENGINEERING: INTRO
10th Edition
ISBN: 9781119571308
Author: Callister
Publisher: WILEY
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Chapter 7, Problem 3QAP
To determine

Is it possible for two screw dislocations of opposite sign to annihilate each other?

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H.W: 1-A Pitot tube is inserted in the pipe of 30 cm I.D. The static pressure head is 10 cm Hg vacuum, and the stagnation pressure at center of the pipe is 0.981 N/cm2 gauge. Calculate the discharge of water through the pipe if u/umax = 0.85. Take Cp = 0.98.
2- A Pitot tube is used to measure the air flow rate in a circular duct 60 cm I.D. The flowing air temperature is 65.5°C. The Pitot tube is placed at the center of the duct and the reading R on the manometer is 10.7 mm of water. A static pressure measurement obtained at the Pitot tube position is 205 mm of water above atmospheric. Take Cp = 0.98, = 2.03 x 10-5 Pa.s Calculate the velocity at the center and the average velocity. Calculate the volumetric flow rate of the flowing air in the duct.
2. A series of gears are mounted on a 40mm diameter steel shaft. Take G = 75 GPa. (i) Draw the torque load diagram. (ii) Determine the angle of twist of gear B relative to gear A. (iii) Determine the maximum shear stress and it's location along the shaft. 600 N-m 900 N-m 200 mm 200 mm 200 mm 500 Nm 300 N·m 200 mm 500 N-m
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