Dampers dampers springs are used inside some valve spring to A. retain valve stem seals.
B. keep the valve spring attached to the valve.
C. decreased valve spring pressure.
D. prevent valve spring surge.

On a average work day more than work place firs are reorted

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?

Asteel wire of 2 mm diameter is fixed between two points located 2 m apart. the tensile force in the wire is 250n, if its density of steel is given by 7830 kg/m3 the fundamental frequency of vibration hz? ?