Fundamentals of Machine Design (3141907) MCQs

MCQs of Power Screws and Threaded Joints

Showing 21 to 22 out of 22 Questions
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21.
If the load itself begin to the screw and descend down, unless a restraining torque is applied then the condition is termed as
(a) halting
(b) overhauling
(c) front driving
(d) none of the mentioned
Answer:

Option (b)

22.
Self-locking takes place when
(a) coefficient of friction is equal to or greater than the tangent of the helix angle
(b) coefficient of friction is lesser than or equal to the tangent of the helix angle
(c) coefficient of friction is equal to or greater than the tangent of the helix angle
(d) none of the mentioned
Answer:

Option (c)

Showing 21 to 22 out of 22 Questions
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