Machine Design - Mechanical Engineering Questions and Answers

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When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.20

0.35

0.50

0.65

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The lead angle of a worm is 22.5°. Its helix angle will be

22.5°

45°

67.5°

90°

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The root angle of a bevel gear is equal to

pitch angle - addendum angle

pitch angle + addendum angle

pitch angle - dedendum angle

pitch angle + dedendum angle

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A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

\((\frac{ 6 V } { n } ) ^{1/2} \)

\((\frac{ 6 V } { n } ) ^{1/3} \)

\((\frac{ 6 V } { n } ) ^{2} \)

\((\frac{ 6 V } { n } ) ^{3} \)