Cast iron pipes are mainly used

A. For conveying steam

B. In water and sewage systems

C. In pressure lubrication systems on prime movers

D. All of the above

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  1. Stress concentration is caused due to
  2. Two shafts A and B under pure torsion are of identical length and identical weight and are made of the…
  3. Which of the following statement is correct?
  4. The ultimate strength of steel in tension in comparison to shear is in the ratio of
  5. The constant factor in case of R10 series of preferred numbers is
  6. The temperature at which the new grains are formed in the metal is known as
  7. When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in…
  8. The form factor of a helical gear __________ with the increase in the helix angle.
  9. A special case of ductility which permits materials to be rolled or hammered into thin sheets, is called
  10. The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________…
  11. A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal…
  12. For general industrial machinery, the ratio of the length of journal to its diameter is taken as
  13. Two shafts will have equal strength, if
  14. In oilness bearings
  15. A sliding bearing which can support steady loads without any relative motion between the journal and…
  16. The permissible stress in the fillet weld is 100 N/mm². The fillet weld has equal leg lengths of…
  17. The material generally used for aircraft components is
  18. During hot working of metals,
  19. Transverse fillet welded joints are designed for
  20. In case of V-belt drive
  21. The wire ropes make contact at
  22. In unilateral system of tolerance, the tolerance is allowed on
  23. The efficiency of a riveted joint is equal to
  24. A sliding bearing which operates without any lubricant present, is called
  25. Silver based solder is used for
  26. The draw of cotter need not exceed
  27. For high speed engines, the cam follower should move with
  28. Two helical springs of the same material and of equal circular crosssection, length and number of turns,…
  29. Which of the following property is essential for spring materials?
  30. When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant…