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Mr. Dubey • 51.43K Points
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Q.) Which of the following statements is/are true?

(A) Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction
(B) Shaft vibrates with maximum frequency when rotors rotate in same direction
(C) Zero node behavior is observed in rotors rotating in opposite direction
(D) All of the above
Correct answer : Option (A) - Torsional vibrations do not occur in a three rotor system, if rotors rotate in same direction

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