In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines%!

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

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

In order to give the primary balance of the reciprocating parts of a m

1.	In order to give the primary balance of the reciprocating parts of a multi-cylinder inline 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
Answer» D. None of these

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In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines%!

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