Machine Design MCQs

Question 1

It is usually preferable in chain drive to use

Accepted Answer

Odd number of teeth on sprocket

Answer

Even number of teeth on sprocket

Answer

Either even or odd, but certain minimum number

Answer

Maximum number of teeth permissible on sprocket

Question 2

Following type of chain is used in motor cycle

Accepted Answer

Bush roller

Answer

Silent

Answer

Pintle

Answer

Ewast

Question 3

Silent chain is made of

Accepted Answer

Inverted tooth over-lapping links

Answer

Links and blocks

Answer

Links, pins, bushings and rollers

Answer

3 or more roller chains

Question 4

Which is correct statement about flexibility and endurance of ropes

Accepted Answer

Lang lay rope is more flexible and endurable than regular lay rope

Answer

Regular lay rope is more flexible and endurable than lang lay rope

Answer

Both are equally good

Answer

Other factors decide these considerations

Question 5

Which is correct statement about drums and sheaves used in wire rope installations

Accepted Answer

Use largest size drum with grooves, the pitch of grooves being more than the wire rope diameter

Answer

Use largest size drum, and flat type

Answer

Use smallest size drum with grooves,. the pitch of grooves being more than the wire rope diameter

Answer

Use largest size drum with grooves whose pitch is less than wire rope diameter

Question 6

Wire ropes are used for applications experiencing

Accepted Answer

Low speeds and high tension

Answer

Low speeds and low tension

Answer

High speeds and low tension

Answer

High speed and high tension

Question 7

The friction moment in clutches with assumption of uniform wear as compared to uniform pressure is

Accepted Answer

Less

Answer

More

Answer

Same

Answer

More/less depending on speed

Question 8

For maximum h.p. transmission by a belt dive

Accepted Answer

33% of maximum tension should be utilized as centrifugal tension difference of tight side and slack side tension should be equal to centrifugal tension

Answer

The centrifugal tension should be zero

Answer

50% of maximum tension should be utilized as centrifugal tension

Answer

Difference of tight side and slack side tension should be equal to centrifugal tension

Question 9

Friction radius for new clutches compared to om-out will be

Accepted Answer

More

Answer

Same

Answer

Less

Answer

Depends on overall size of clutch