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A reed type tachometer use the principle of

A. Longitudinal vibration

B. Torsional vibration

C. Transverse vibration

D. Damped free vibration

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  14. Which is the false statement about the properties of instantaneous centre?
  15. In S.H.M., the velocity vector w.r.t. displacement vector
  16. The danger of breakage and vibration is maximum
  17. In higher pair, the relative motion is
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  23. The relation between number of links (l) and number of joints (j) in a kinematic chain is
  24. The critical speed of a shaft in revolution per second is __________ as that of natural frequency of…
  25. The centre of percussion is below the centre of gravity of the body and is at a distance equal to
  26. The amplitude of vibration is always __________ the radius of the circle.
  27. In a reciprocating engine, usually __________ of the reciprocating masses are balanced.
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