Machine Design MCQs

Question 1

Interference is inherently absent in following type of gears

Accepted Answer

Cycloidal

Answer

Involute

Answer

Stub

Answer

Epicycloid

Question 2

In hypoid gears, the axes

Accepted Answer

Are non-parallel and non-intersecting, and the teeth are curved

Answer

Are non-parallel and non-intersecting, and the teeth are straight

Answer

Intersect, and the teeth are curved and oblique

Answer

Intersect, and the teeth are curved and can be ground

Question 3

The pressure angle in involute profile gear

Accepted Answer

Often changes

Answer

Remains constant

Answer

Rarely changes

Answer

Unpredictable

Question 4

In helical gears, the right hand helix will mesh

Accepted Answer

Left hand helix

Answer

Right hand helix

Answer

Both of the above

Answer

Any one of the above

Question 5

Pressure angle in worm gears is the angle between

Accepted Answer

Half the angle between two inclined faces in axial plane

Answer

Tangent to the pitch helix and the plane of rotation

Answer

Tangent to the pitch helix and an element of the pitch cylinder

Answer

All of the above

Question 6

To keep noise minimum, following type of gear should be used

Accepted Answer

Helical

Answer

Involute spur

Answer

Cycloidal spur

Answer

Miner

Question 7

The type of tooth profile used for gears in watches and docks is

Accepted Answer

Cycloidal

Answer

Involute

Answer

Hypocycloid

Answer

Epicycloid

Question 8

Gears used in machine tools must have the contact ratio of

Accepted Answer

Less than 1.4

Answer

Equal to 1

Answer

Less than 1

Answer

Equal to 1.4

Question 9

The backlash required for spur gears depends on

Accepted Answer

Both module and pitch line velocity

Answer

Module

Answer

Pitch line velocity

Answer

Tooth profile