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Which of the following is a permanent fastening?

A. Bolts

B. Keys

C. Cotters

D. Rivets

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

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  1. Shear stress theory is applicable for
  2. A bench vice has following type of threads
  3. When a helical compression spring is cut into halves, the stiffness of the resulting spring will be
  4. The cracks in helical springs used in railway carriages usually start on the inner side of the coil…
  5. A double strap butt joint (with equal straps) is
  6. The designation M 33 × 2 of a bolt means
  7. The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for
  8. Which is correct statement? Stress concentration in cyclic loading is
  9. In Vickers hardness testing, the pyramid indentor apex is
  10. In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.
  11. The maximum efficiency of a square threaded screw is
  12. Oldham coupling is used to connect two shafts
  13. Taper usually provided on cotter is
  14. The stretching in a belt can be controlled by __________ the stress in the belt.
  15. In levers, leverage is the ratio of
  16. When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant…
  17. The pitch diameter is the __________ diameter of an external or internal screw thread.
  18. In hydrodynamic bearings
  19. A plate with an elliptical hole in the centre, with semi-major axis (A) perpendicular to the direction…
  20. For maximum power, the velocity of the belt will be
  21. The included angle for the British Association thread is
  22. Two shafts will have equal strength, if
  23. In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.
  24. The yield point in static loading is __________ as compared to fatigue loading.
  25. In worm gears, the pressure angle is ________ the angle between two inclined faces in axial plane.
  26. A chain drive transmits __________ power as compared to belt drive.
  27. The ball bearings are, usually, made from
  28. The coefficient of friction between the belt and pulley depends upon the
  29. A bolt of M 24 × 2 means that
  30. In block brakes, the ratio of shoe width to wheel diameter is taken between