7. A solid shaft of mild steel 200 mm in diameter is to be replaced by hollow shaft of alloy steel for which the allowable shear stress is 22% greater. If the power to be transmitted is to be increased by 20% and the speed of rotation increased by 6%, determine the maximum internal diameter of the hollow shaft. The external diameter of the hollow shaft is to be 200mm. a.145 mm b. 178 mm c. 104 mm d. 183 mm

7. A solid shaft of mild steel 200 mm in diameter is to be replaced by hollow shaft of alloy steel for which the allowable shear stress is 22% greater. If the power to be transmitted is to be increased by 20% and the speed of rotation increased by 6%, determine the maximum internal diameter of the hollow shaft. The external diameter of the hollow shaft is to be 200mm. a.145 mm b. 178 mm c. 104 mm d. 183 mm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

7. A solid shaft of mild steel 200 mm in diameter is to be replaced by hollow shaft of
alloy steel for which the allowable shear stress is 22% greater. If the power to be
transmitted is to be increased by 20% and the speed of rotation increased by 6%,
determine the maximum internal diameter of the hollow shaft. The external diameter of
the hollow shaft is to be 200mm.
a.145 mm
b. 178 mm
c. 104 mm
d. 183 mm

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