Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

A. π (r₁ + r₂) + (r₁ + r₂)²/x + 2x

B. π (r₁ + r₂) + (r₁ - r₂)²/x + 2x

C. π (r₁ - r₂) + (r₁ - r₂)²/x + 2x

D. π (r₁ - r₂) + (r₁ + r₂)²/x + 2x

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

You can do it
  1. In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines,
  2. A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance…
  3. Module of a gear is
  4. A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at…
  5. The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction)
  6. In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set…
  7. If two moving elements have surface contact in motion, such pair is known as
  8. A cam with a roller follower would constitute following type of pair
  9. In the two rotor system as shown in the below figure (I₁ < I₂), a node of vibration is…
  10. The ratio of the number of teeth to the pitch circle diameter in millimetres, is called
  11. When the sleeve of a Porter governor moves upwards, the governor speed
  12. When the sleeve of a Porter governor moves downwards, the governor speed
  13. In involute gears, the pressure angle is
  14. Flexible coupling is used because
  15. Which of the following statement is correct for involute gears?
  16. In a ball bearing, ball and bearing forms a
  17. The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity…
  18. Angle of action of cam is defined as the angle
  19. Any point on a link connecting double slider crank chain will trace a
  20. The equivalent length of a simple pendulum which gives the same frequency as a compound pendulum is
  21. In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded…
  22. When a ship travels in a sea, which of the effect is more dangerous
  23. The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is (Where μ =…
  24. The displacement of a flat faced follower when it has contact with the flank of a circular arc cam,…
  25. In a multiple V-belt drive, if one of the belts is broken, then we should replace
  26. The approximate straight line mechanism is a
  27. The unbalanced force due to reciprocating masses
  28. The centre of gravity of a coupler link in a four bar mechanism will experience
  29. The factional torque for square thread at the mean radius r while raising load W is given by
  30. The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of…