Home

A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

A. Remain same as before

B. Become equal to 2R

C. Become equal to R/2

D. Become equal to R/4

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The primary unbalanced force is maximum _________ in one revolution of the crank.
  2. The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left…
  3. The pressure angle of a cam is the angle between the direction of the follower motion and a normal to…
  4. When the belt is stationary, it is subjected to some tension known as initial tension. The value of…
  5. The velocity of sliding __________ the distance of the point of contact from the pitch point.
  6. The unbalanced force due to reciprocating masses
  7. Which of the following statement is correct for gears?
  8. When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the…
  9. Throw of a cam is the maximum distance of the follower from
  10. The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of…
  11. The fundamental equation for correct steering is (where φ and α = Angle through which the…
  12. The danger of breakage and vibration is maximum
  13. Efficiency of a screw jack is given by
  14. The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations.
  15. When brakes are applied to all the four wheels of a moving car, the distance travelled by the car before…
  16. The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where…
  17. The instantaneous centre of a rigid thin disc rolling on a plane rigid surface is located at
  18. The critical speed of a shaft in revolution per second is __________ as that of natural frequency of…
  19. The ratio of the maximum displacement of the forced vibration to the deflection due to the static force,…
  20. The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is (Where μ =…
  21. A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism…
  22. The power of a Porter governor is equal to
  23. The contact ratio for gears is
  24. Tangential acceleration direction is
  25. The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust…
  26. When a body is subjected to transverse vibrations, the stress induced in a body will be
  27. The coriolis component of acceleration leads the sliding velocity by
  28. A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping…
  29. Which of the following is a spring controlled governor?
  30. The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion…