## Theory of Machine Under logarithmic decrement, the amplitude of successive vibrations are

In arithmetic progression
In logarithmic progression
Constant
In geometric progression

## Theory of Machine In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

Will not occur
Will remain same
Will change
Could change or remain unaltered depending on which link is fixed

## Theory of Machine Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?

Kinetics
Applied mechanics
Mechanisms
Theory of machines

## Theory of Machine The critical speed of a shaft depends upon its

Mass
Mass and stiffness
Stiffness and eccentricity
Stiffness

## Theory of Machine Critical damping is a function of

Mass and stiffness
Damping coefficient and natural frequency
Mass and natural frequency
Mass and damping coefficient

## Theory of Machine A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

P = W tan (α + φ)
P = W (sin α + μ cos α)
P = W tan α
P = W (cos α + μ sin α)