The material commonly used for crane hooks is

A. Cast iron

B. Wrought iron

C. Mild steel

D. Aluminium

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

You can do it
  1. Stress concentration is caused due to
  2. Pick up wrong statement. Fatigue strength can be increased by
  3. The modulus of elasticity for mild steel is approximately equal to
  4. Which of the following statement is correct regarding power screws?
  5. Maximum principal stress theory is applicable for
  6. A double fillet welded joint with parallel fillet weld of length l and leg s is subjected to a tensile…
  7. Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?
  8. Cap screws are
  9. A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved…
  10. The cracks in helical springs used in railway carriages usually start on the inner side of the coil…
  11. Lewis equation in gears is used to find the
  12. The face of the tooth is the
  13. Factor of safety for fatigue loading is the ratio of
  14. Wahl's stress factor __________ very rapidly as the spring index decreases.
  15. When a close coiled helical spring is compressed, its wire is subjected to
  16. When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced…
  17. In the levers of first type, the mechanical advantage is __________ one.
  18. When two non-parallel or intersecting but coplanar shafts are connected by gears, the arrangement is…
  19. The included angle between the sides of V-belt is
  20. The value of stress concentration factor depends upon
  21. In nitrated parts, the origins of the fatigue cracks will occur at
  22. According to I.B.R., the factor of safety of riveted joint should not be less than
  23. The valve rod in a steam engine is connected to an eccentric rod by
  24. Cold working
  25. Which of the following screw thread is adopted for power transmission in either direction?
  26. In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take…
  27. When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order…
  28. The piston pin bearings in heavy duty diesel engines are
  29. In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing
  30. A sliding bearing which operates without any lubricant present, is called