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Mr. Dubey • 100.64K Points
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Q. The rotating shafts tend to vibrate violently at whirling speeds because

  • (A) The system is unbalanced
  • (B) Bearing centre line coincides with the axis
  • (C) The shafts are rotating at very high speeds
  • (D) Resonance is caused due to the heavy mass of the rotor
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