Question

In a belt conveyor, function of the snub pulley is to

• A. Clean the inner surface of the belt
• B. Clean the outer surface of the belt
• C. Increase the angle of contact of belt with drive drum
• D. Decrease the belt tension

Hint:

Snub pulleys are strategically placed in belt conveyor systems to enhance grip and efficiency by increasing the belt's contact with the drive drum.

Answer 1

The Correct Option is C

In a belt conveyor system, the snub pulley is used to increase the angle of contact (or wrap angle) between the belt and the drive drum. This increased contact improves the traction between the belt and the drum, ensuring better power transmission and preventing slippage. The snub pulley does not clean the belt or reduce tension; those functions are handled by other components like scrapers or tensioning systems.
Thus, the correct answer is Increase the angle of contact of belt with drive drum.