Machine Design - Study Mode
[#351] For crank shaft bearings, the ratio of the length of the journal to its diameter is _________.
Correct Answer
(A) Less than unity
[#352] When an open coiled helical compression spring is subjected to an axial load (W), the compression produced in the spring will be (where, n = No. of active turns of the spring and G = Modulus of rigidity for the spring material)
Correct Answer
(C) $$frac{{8{ ext{W}}{{ ext{D}}^3}{ ext{n}}}}{{{ ext{G}}{{ ext{d}}^4}}}$$
[#353] A leaf spring in automobiles is used
Correct Answer
(C) To absorb shocks
[#354] The fatigue stress concentration factor is defined as
Correct Answer
(B) The ratio of endurance limit without stress concentration to the endurance limit with stress concentration
[#355] If b denotes the face width and L denotes the cone distance for a bevel gear, then the bevel factor is written as
Correct Answer
(D) $$1 - frac{{ ext{b}}}{{ ext{L}}}$$