Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 2

31.

The inversion of a mechanism is

changing of a higher pair to a lower pair

turning its upside down

obtained by fixing different links in a kinematic chain

obtained by reversing the input and output motion

Answer: Option

Explanation:

No answer description is available. Let's discuss.

32.

The coefficient of fluctuation of energy is the ratio of maximum energy to the minimum energy.

True

False

Answer: Option

Explanation:

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33.

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

screw pair

spherical pair

turning pair

sliding pair

Answer: Option

Explanation:

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34.

The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

Answer: Option

Explanation:

No answer description is available. Let's discuss.

35.

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 centre, and n = Ratio of length of connecting rod to the radius of crank)