Theory of machines - Engineering

Q1:

In order to give the primary balance of the reciprocating parts of a multi-cylinder in-line engines,

A the algebraic sum of the primary forces must be equal to zero

B the algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

C both (a) and (b)

D none of these

ANS:C - both (a) and (b)

Explanation: No answer description is available.