WorksheetsBelts & chains
Total questions: 14
Worksheet time: 7mins
V belts are classified in .....Classes
6
3
4
5
Which of the following is not an advantage of toothed belt drive?
Silent drive
Lowest cost
Long life
No need of lubrication
The tension caused by centrifugal force on the belts
Decrease power transmission
Increases power transmission
Doesn't effect power transmission
None of the above
Creep in belt drive is due to ...
Weak material of the belt
Weak material of the pulley
Uneven extensions and contractions of the belt when it passes from tight slack side
None of these
If width of a V belt is 10mm then the length of the belt will be in range of ...mm
150 to 860
260 to 860
212 to 1262
420 to 2820
In V belt drive, belt touches
At bottom
At sides only
Both at bottom & sides
Could touch anywhere
For shaft in parallel and rotating in same direction the belt drive used is ...
Diagonal
Cross
Open
None of these
Which pulley is fitted on the belt to increase the arc of contact?
Stepped pulley
Cone pulley
Jockey pulley
Driver pulley
Which type of belt drive you will provide for connecting 2 shafts whose axis are at right angles to each other?
Open belt drive
Quarter turn belt drive
Cross belt drive
None of these
The ratio of the speed of the driven pulley to the speed of the driver pulley is defined as the
Slip ratio
Creep
Velocity ratio
None of these
Due to slip of the belt, the velocity ratio of the drive
Decreases
Increases
Uniform
Doesn't change
Which one is a positive drive?
Rope drive
V belt drive
Crossed belt drive
Chain drive
The velocity ratio of the belt drive due to slip of the belt
Increases
Decreases
Remains unchanged
Unpredictable
Which of the following provides a smooth and positive drive?
Rope drive
V belt drive
Chain drive
Gear drive
