Mechanical Engineering - Machine Design

16.
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as
both the ends fixed
both the ends hinged
one end fixed and the other end hinged
one end fixed and the other end free
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is
bending stress only
a combination of torsional shear stress and bending
direct shear stress only
a combination of bending stress and direct shear stress
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
In a journal bearing, the load on the bearing is __________ to the axis of the journal.
parallel
perpendicular
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called
addendum circle
dedendum circle
pitch circle
clearance circle
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
When the frictional force helps to apply the brake, then the brake is said to be self-energizing brake.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.