Project Description

Acoustics Laboratory needed for vibration testing, effect of load on natural frequency of vibrations of a lever pin supported at one end carrying adjustable load on a vertical screwed bar and spring supported at some Intermediate point
(i) When the dead weight of rods is neglected and (ii) when their dead weight is taken into account 2- To find out frequency of damped free vibration and rate of decay of vibration-amplitude in the system.
3- To find out natural frequency and damped free frequency of a torsion pendulum and , hence to find out coefficient of damping of the oil ;
4- To observe the phenomenon of 'whirl' in a horizontal light shaft and to determine the critical speed of the shaft.
5- To observe the mode shapes of a spring-connected, double pendulum and hence to demonstrate the phenomenon of beats.
6- To demonstrate the principle of tuned Undamped Dynamic Vibration Absorber and to determine the effect of mass-ratio (of main and auxiliary mass) on the spread of the resulting natural frequencies
7- To take measurements of sound Pressure Level (SPL) and to carry out octave band analysis of a machine using Noise Level Meter.