The objective of idler pulley in belt drive is to

A. Decrease the tendency of belt to slip

B. Increase the power transmission capacity

C. Increase the wrap angle and belt tension

D. All the above objectives

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

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  1. The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure…
  2. Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected…
  3. In standard taper roller bearings, the angle of taper of outer raceway is
  4. The temperature required for full annealing in hypereutectoid steel is
  5. When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic…
  6. When the fulcrum is in between the load and effort, the lever is said to be of
  7. In a horizontal flat belt drive, it is customary to use
  8. The static tooth load should be __________ the dynamic load.
  9. For a square key made of mild steel, the shear and crushing strength are related as
  10. When the belt speed increases
  11. Which of the following statement is correct?
  12. Rankine's theory is used for
  13. Which is correct statement? Stress concentration in static loading is
  14. Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic…
  15. For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be
  16. A machine part subjected to __________ is called a strut.
  17. The width of the pulley should be __________ width of the belt.
  18. Basic shaft is one
  19. When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at…
  20. If a load W is applied instantaneously on a bar; Then the stress induced in bar will
  21. In a journal bearing, the load on the bearing is __________ to the axis of the journal.
  22. A steel containing upto 0.15% carbon is known as
  23. The fatigue stress concentration factor is defined as
  24. Which of the following is not correct procedure to increase the fatigue limit?
  25. If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
  26. The fatigue life of a part can be improved by
  27. A leaf spring in automobiles is used
  28. If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed…
  29. The bending moment M and a torque T is applied on a solid circular shaft. If the maximum bending stress…
  30. The process extensively used for making bolts and nuts is