The rotating shafts tend to vibrate violently at whirling speeds beca

1.	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
Answer» E.

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The rotating shafts tend to vibrate violently at whirling speeds because

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