Those characteristics which are applicable to

Question

Consider the following characteristics:

1. Small interference              

2. Strong tooth

3. Low production cost

4. Gear with small number teeth

Those characteristics which are applicable to stub 20⁰ involute system would include

(a) 1 alone            (b) 2,3 and 4

(c) 1, 2 and 3        (d) 1,2,3 and 4