Screws used for power transmission should have

• Low efficiency

• high efficiency

• very fine threads

• strong teeth

The number of rivets in shear shall be equal to the number of rivets in crushing.

• Correct

• Incorrect

A transmission shaft includes

• counter shaft

• line shaft

• over head shaft

• all of these

A crankshaft is a __________ shaft.

• transmission

• machine

A column is known as a long column if the slenderness ratio is

• 40

• 50

• 70

• 100

In radial cams, the follower moves

• in a direction perpendicular to the cam axis

• in a direction parallel to the cam axis

• in any direction irrespective of cam axis

• along the cam axis

Which of the following material has the maximum ductility?

• Mild steel

• Copper

• Zinc

• Aluminium

The constant factor in case of R10 series of preferred numbers is

• 1.06

• 1.12

• 1.26

• 1.58

The resistance to fatigue of a material is measured by

• elastic limit

• Young's modulus

• ultimate tensile strength

• endurance limit

A column is known as a long column if the slenderness ratio is

• 40

• 50

• 70

• 100