Theory of Machine
The Coriolis component of acceleration is taken into account for

Slider crank mechanism
Quick return motion mechanism
Four bar chain mechanism
All of these

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Theory of Machine
In a four bar chain or quadric cycle chain

Each of the four pairs is a turning pair
Two are turning pairs and two are sliding pairs
Three are turning pairs and one is a sliding pair
One is a turning pair and three are sliding pairs

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Theory of Machine
Which of the following statements regarding laws governing the friction between dry surfaces are correct?

All of these
The friction force is directly proportional to the normal force.
The friction force is independent of me area of contact.
The friction force is dependent on the materials of the contact surfaces.

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Theory of Machine
The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead center, and n = Ratio of length of connecting rod to the radius of crank)

ωr [cos θ + (cos 2θ/n)]
ω²r [sin θ + (sin 2θ/n)]
ω²r [cos θ + (cos 2θ/n)]
ωr [sin θ + (sin 2θ/n)]

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