Which of the following is a spring controlled governor?
A.Harting governor
B.Pickering governor
C.Hartnell governor
D.Wilson hartnell governor
E.All of the above
A.Harting governor
B.Pickering governor
C.Hartnell governor
D.Wilson hartnell governor
E.All of the above
A.two links
B.three links
C.only four links
D.four or more than four links
A.The frequency at which vibrations of a system are damped
B.The frequency when a system exceeds the vibrations frequency from the critical value
C.The frequency below which vibrations do not cause appreciable damage to equipment
D.Said to occur when two vibrations of almost equal frequency are present
E.One at which the vibrations of a system act exactly opposite to the other thereby causing damping
A.The resistance to angular acceleration
B.The mass of every element of a body multiplied by its distance from the axis
C.Any of the above
D.None of the above
A.Elasticity of belt material
B.Plasticity of belt material
C.Elongation of belt due to tension
D.Differential elougation of belt due to difference in tension on two sides of a pulley
E.Plastic deformation of belt material due to constant use
A.Porter governor
B.Hartnell governor
C.Watt governor
D.All of the above
E.None of the above
A.Displacement
B.Linear velocity
C.Angular velocity
D.Rate of change of angular velocity
E.None of the above
A.Flexible coupling
B.Universal coupling
C.Oldham’s coupling
D.Rigid coupling
E.Any of the above
A.Are preceded by free vibrations
B.Are followed by free vibrations
C.Have a frequency more than the natural frequency
D.Are independent of natural frequency
E.None of the above
A.2 links and 3 turning pairs
B.3 links and 3 turning pairs
C.3 links and 4 turning pairs
D.4 links and 4 turning pairs
E.4 links and 5 turning pairs