MECHANICAL VIBRATIONS Set 1

Keeping the mass moment of inertia of left end and the right end shafts in a three-rotor system same, if the length of one shaft is doubled what should be the effect on the length of another shaft?

What is the total number of nodes formed in a three-rotor system if the rotors at one of the ends and the one in the middle rotate in the same direction?

For a vibration system having different shaft parameters, calculate which of the following cannot be the diameter of the equivalent shaft if the diameters of shafts in m are: 0.05, 0.06, 0.07.

A disc is having a mass of 500 kg at a radius of gyration of 450 mm. What will be the value of the mass moment of inertia of the shaft?

In which of the following condition torsional vibration will not take place, considering 3 rotors A, B and C. A is rotating in the clockwise direction.

For the occurrence of free torsional vibration in a three-rotor system which of the condition is necessary?

For a two-rotor system, the mass moment of inertia of one shaft (A) is twice the other (B), then what is the relation between the length of the shafts.

For a two-rotor system, the length of one shaft (A) is twice the other (B), then what is the relation between the mass moment of inertia of the shafts.

If the mass moment of inertia is increased to four times, then what will be the effect on free torsional vibrations of a single motor system?

In a two-rotor system, torsional vibration occurs only if the rotors are moving in the ______ direction.