10. A 100 mm steel shaft develops a 3.75 kN - m torque and using a square key to fasten a 250 mm pulley. The crushing stress of the key is 50 MPa. The key has a width of 20 mm and length of 150 mm. Determine the key thickness. A. 35 mm B. 25mm C. 20 mm D. 40 mm

10. A 100 mm steel shaft develops a 3.75 kN - m torque and using a square key to fasten a 250 mm pulley. The crushing stress of the key is 50 MPa. The key has a width of 20 mm and length of 150 mm. Determine the key thickness. A. 35 mm B. 25mm C. 20 mm D. 40 mm

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Design of Shafts and Shaft Components

The shaft is basically defined as the machine element that rotates, is in circular cross-section, it is majorly used to transfer the power from one part of the system to another, or from a power generating machine to a power absorbing machine. The shaft is supported on bearings and is rotated with the help of a set of gears or pulleys that are used for the power transmission. Bending moment, torsion, and an axial force act upon the shaft. Designing of shaft primarily involves determining stresses at a critical point in the shaft that is arising due to loading.

Question

10. A 100 mm steel shaft develops a 3.75 kN - m torque and using a square key to fasten a 250 mm
pulley. The crushing stress of the key is 50 MPa. The key has a width of 20 mm and length of 150
mm. Determine the key thickness.
A. 35 mm
B. 25mm
C. 20 mm
D. 40 mm

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