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The included angle for the British Association thread is

A. 29°

B. 55°

C. 47.3°

D. 60°

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  1. A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm². If the permissible…
  2. In worm gears, the pressure angle is ________ the angle between two inclined faces in axial plane.
  3. Applications in which stresses are encountered in one direction only uses following type of threads
  4. Which of the following statement is wrong?
  5. In cross or regular lay ropes
  6. The ratio of the ultimate stress to the design stress is known as
  7. Two helical springs of the same material and of equal circular crosssection, length and number of turns,…
  8. The property of a material which enables it to be drawn into wires with the application of a tensile…
  9. Shear stress theory is applicable for
  10. Plastic flow in ductile materials
  11. When a nut is tightened by placing a washer below it, the bolt will be subjected to following type of…
  12. The tension on the slack side of the belt is __________ the tension on the tight side of the belt.
  13. Stress concentration in cyclic loading is more serious in
  14. Which of the following has threads at both ends?
  15. The connecting rod bolts are tightened up so that tightening stress
  16. The valve rod in a steam engine is connected to an eccentric rod by
  17. Which is positive drive?
  18. A sliding bearing which operates without any lubricant present, is called
  19. In case of thick cylinders, the tangential stress across the thickness of cylinder is
  20. An alien bolt is
  21. In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of…
  22. The piston pin bearings in heavy duty diesel engines are
  23. The contact ratio for gears is
  24. The square threads are usually found on
  25. The power transmitted by belt drive depends upon
  26. A special case of ductility which permits materials to be rolled or hammered into thin sheets, is called
  27. In a transverse fillet welded joint, the size of weld is __________ the throat of weld.
  28. When the speed of belt increases,
  29. The shear stress in a beam varies from zero at the outer fibres to a maximum at the________.
  30. In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.