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THEORY OF MACHINE

Theory of Machine
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be

ω²r. n/(n + 1)
ω²r. (n - 1)/n
ω²r. n/(n - 1)
ω²r. (n + 1)/n

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Theory of Machine
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be

None of these
Minimum
Maximum
Zero

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Theory of Machine
When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be

ω² r {(n - 1)/n}
ω² r {n/(n - 1)}
ω² r {(n + 1)/n}
ω² r {n/(n + 1)}

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Theory of Machine
When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a

Turning pair
Spherical pair
Screw pair
Sliding pair

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Screw pair
Spherical pair
Sliding pair
Turning pair

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