Question 1) State longitudinal vibrations.
b) Write down the two uses of vibrations.
c) What do you mean by resonance
d) If mass of the vibrating body increases 9 times, what will be its effect on frequency.
e) State logarithmic decrement.
f) What is the angle between inertia and spring force?
g) What is the number of nodes if the shaft is having three rotors?
h) What is a continuous system?
i) Define principal mode of vibration.
j) What do you understand by semi definite system.
Question 2) Write brief note on the following:
(a) Holzer's method.
(b) Vibrometer.
(c) Centrifugal pendulum vibration absorber.
Question 3) Derive a frequency equation of torsional vibrations for a free-free shaft of length l.