Assertion (A): In pre – loaded bolted joints, there is a tendency for failure to occur in the gross plate section rather than through holes.
Reason (R): The effect of pre – loading is to create sufficient friction between the assembled parts so that no slippage occurs.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true