Question
Download Solution PDFConsider the following statements regarding V-belt drive :
1. The groove angle of the sleeve is less than the belt section angle
2. The efficiency of a V-belt drive is higher than that of a flat belt drive
3. The groove angle is so made that the belt gets wedged in the groove
Which of the above statements are correct ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The V-belts are made of fabric and cords molded-in rubber and covered with fabric and rubber. These belts are molded into a trapezoidal shape and are made endless. These are particularly suitable for short drives.
A small groove angle will require more force to pull the belt out of the groove which will result in loss of power and excessive belt wear due to friction and heat. Hence the selected groove angle is a compromise between the two. Usually, the groove angles of 32° to 38° are used.
The groove angle of the sleeve is less than the belt section angle and the groove angle is so made that the belt gets wedged in the groove.
Comparison between flat belt and V-belt is given below:
|
S.No. |
Flat Belt |
V-Belt |
|
1 |
They do not require precise alignment of shaft and pulley |
They require precise alignment of shaft and pulley. |
|
2 |
It can be used in industry and abrasive atmosphere |
It can not be used in industry and abrasive atmosphere |
|
3 |
Design is simple and inexpensive |
Design is difficult and expansive |
|
4 |
It can use upto 15 m long |
It is used for short distance |
|
5 |
Efficiency is more than V-belt |
Efficiency is less than flat belt |
|
6 |
Capacity is less |
Capacity is more |
∴ Statement 1 and 3 are correct.
Last updated on Jul 2, 2025
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