31
The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where l = Number of links, and j = Number of binary joints)
- An = (l -1) - j
- Bn = 2(l - 1) - 2j
- Cn = 3(l - 1) - 2j
- Dn = 4(l - 1) - 3j
Correct answer: C