Machine Design MCQs

Question 1

The contact ratio for gears is

Accepted Answer

Greater than one

Answer

Zero

Answer

Less than one

Answer

None of these

Question 2

Which of the following material has the maximum ductility?

Accepted Answer

Mild steel

Answer

Copper

Answer

Aluminium

Answer

Zinc

Question 3

In radial bearings, the load acts __________ to the axis of rotation.

Accepted Answer

Perpendicular

Answer

Parallel

Answer

Both A and B

Answer

None of these

Question 4

Basic hole is one

Accepted Answer

Whose lower deviation is zero

Answer

Whose upper deviation is zero

Answer

Whose lower as well as upper deviations are zero

Answer

Does not exist

Question 5

Tapered roller bearings can take

Accepted Answer

Both radial and axial loads and the ratio of these being greater than unity

Answer

Axial load only

Answer

Radial load only

Answer

Both radial and axial loads and the ratio of these being less than unity

Question 6

The power transmitted by means of a belt depends upon

Accepted Answer

All of the above

Answer

Velocity of the belt

Answer

Tension under which the belt is placed on the pulleys

Answer

Arc of contact between the belt and the smaller pulley

Question 7

In a multiple V-belt drive, if one of the belts break, then

Accepted Answer

The entire set of belts is replaced

Answer

Only the broken belt is replaced

Answer

The broken belt and the belt on either side of it, is replaced

Answer

The broken belt need not to be replaced

Question 8

The resultant axial load on a bolt depends upon

Accepted Answer

All of the above

Answer

External load applied

Answer

Initial tension due to tightening of the bolt

Answer

Relative elastic yielding of the bolt and the connected members

Question 9

The process extensively used for making bolts and nuts is

Accepted Answer

Cold heading

Answer

Hot piercing

Answer

Extrusion

Answer

Cold peening