Theory of Machine
Which of the following is an inversion of a single slider crank chain?

Oscillating cylinder engine
Rotary internal combustion engine
All of these
Pendulum pump

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

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Theory of Machine
A system of masses rotating in different parallel planes is in dynamic balance if the

Resultant force and resultant couple are both equal to zero
Resultant force is equal to zero
Resultant force is numerically equal to the resultant couple, but neither of them need necessarily be zero
Resultant couple is equal to zero

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