Theory of Machine
The indicator using Watt mechanism is known as

Thomson indicator
Richard indicator
Simplex indicator
Thompson indicator

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

None of these
The algebraic sum of the primary forces must be equal to zero
Both (A) and (B)
The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

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