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mechanical engineering theory of machines
1. The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the
(A): effects of unbalances are directly proportional to the speed
(B): effects of unbalances are proportional to the square of the speed
(C): unbalanced couples are caused only at higher speeds
(D): unbalanced forces are not dangerous at higher speeds
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