In the diagram shown below, if rotor X and rotor Z rotate in same dire – McqOptions

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1.	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.
A.	Three node vibration
B.	Two node vibration
C.	Single node vibration
D.	None of the above
Answer» C. Single node vibration

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