Question

Consider the following statements pertaining to V belts in power transmission

1. Standard V belts are available in 7 sizes of cross section A to G.                

2. Standard V belts are available in 5 sizes of cross section A to E

3.   Standard V belts are available in 5 sizes of cross section A to E with A having largest cross section.

4.   The included angle for the belt groove in usually around 35⁰.  

Which of these statements are correct?

(a) 1 only                        (b) 2 and 4

(c) 3 and 4                      (d) 1 and 4