Home

In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.

A. Larger than

B. Smaller than

C. Equal to

D. None of these

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

You can do it
  1. The shock resistance of steel is increased by adding
  2. In cylindrical cams, the follower moves
  3. Slenderness ratio is the ratio of
  4. In worm gears, the angle between the tangent to the pitch helix and an element of the cylinder, is known…
  5. Which of the following statement is correct?
  6. A localised compressive stress at the area of contact between two members is known as
  7. A connecting rod is designed as a
  8. A sliding bearing in which although lubricant is present, the working surfaces __________ contact each…
  9. The taper on a rectangular sunk key is
  10. The centrifugal tension in belts
  11. In the assembly of pulley, key and shaft
  12. In case of pressure vessels having closed ends, the fluid pressure induces
  13. In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock…
  14. A hollow saddle key is
  15. The ratio of endurance limit in shear to the endurance limit in flexure is
  16. A bolt of M 24 × 2 means that
  17. According to Indian standard specifications, a grey cast iron designated by 'FG 200' means that the
  18. Taper usually provided on cotter is
  19. Silver based solder is used for
  20. Form coefficient of spring is
  21. A bolt is designed on the basis of __________ with a large factor of safety.
  22. The radial distance of a tooth from the pitch circle to the top of the tooth is called
  23. The number of slots in a 25 mm castle nut is
  24. According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width…
  25. The piston rod of a steam engine is usually connected to the crosshead by means of
  26. Which of the following screw thread is adopted for power transmission in either direction?
  27. The maximum normal stress theory is used for
  28. When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and…
  29. Lewis form factor for 14 ½° composite and full depth involute system is (where T = Number…
  30. If the centre distance of the mating gears having involute teeth is increased, then the pressure angle