In a multi-rotor system of torsional vibration maximum number of nodes

1.	In a multi-rotor system of torsional vibration maximum number of nodes that can occur is:
A.	Two
B.	Equal to the number of rotor plus one
C.	Equal to the number of rotors
D.	Equal to the number of rotors minus one
Answer» E.

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In a multi-rotor system of torsional vibration maximum number of nodes that can occur is:

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