While designing any machine element, maximum stress to that element should be ____.

While designing any machine element, maximum stress to that element should be ____.

a. less than the ultimate stress or critical stress
b. equal to the ultimate stress or critical stress
c. more than the ultimate stress or critical stress
d. none of the above

Correct Answer : a. less than the ultimate stress or critical stress

Explanation :

While designing a machine, to make complete use of mechanical properties of the machine, the safety should be considered as an important factor. For that purpose the machine element should be designed in such manner that the applied stress should be less than the ultimate stress or critical stress. This applied stress is called as working stress or allowable stress.