In the diagram shown below, if rotor X and rotor Z rotate in same direction and rotor Y rotates in opposite direction, then specify the type of node vibration.

Related MCQs

• A single cylinder oil engine works with a three rotor system, the shaft length is 2.5m and 70mm in diameter, the middle rotor is at a distance 1.5m from one end. Calculate the free torsional vibration frequency for a single node system in Hz if the mass moment of inertia of rotors in Kg-m2 are: 0.15, 0.3 and 0.09. C=84 kN/mm2
• A single cylinder oil engine works with a three rotor system, the shaft length is 2.5m and 70mm in diameter, the middle rotor is at a distance 1.5m from one end. Calculate the free torsional vibration frequency for a two node system in Hz if the mass moment of inertia of rotors in Kg-m2 are: 0.15, 0.3 and 0.09. C=84 kN/mm2
• 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
• During torsional vibration of a shaft, the node is characterized by
• In a three rotor system, for the middle rotor, if the stiffness of both the length either side of the rotor is increased to two times what will
• In a multi-rotor system of torsional vibration maximum number of nodes that can occur is:
• For occurrence of free torsional vibration in a three rotor system which of the condition is necessary?
• In which of the following condition torsional vibration will not take place, considering 3 rotors A, B and C. A is rotating in clockwise direction.
• In which type of vibrations, amplitude of vibration goes on decreasing every cycle?
• Which of the following is a type of free vibration?