Cold working

A. Increases the fatigue strength

B. Decreases the fatigue strength

C. Has no influence on fatigue strength

D. Alone has no influence on fatigue strength

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  1. The velocity factor for precision metallic gears cut with high accuracy and operating at velocities…
  2. A tapered key which fits in a key-way in the hub and is flat on the shaft, is known as
  3. Fabric belts are used in industrial applications because
  4. The cracks in helical springs used in railway carriages usually start on the inner side of the coil…
  5. Aircraft body is usually fabricated by
  6. When a close coiled helical spring is compressed, its wire is subjected to
  7. Buttress threads are usually found on
  8. If a material fails below its yield point, failure would be due to
  9. When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced…
  10. In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take…
  11. Which of the following cotter joint will be used to connect strap end of a connecting rod?
  12. For applications involving high stresses in one direction only the following type of thread would be…
  13. Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?
  14. In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.
  15. Which of the following property is essential for spring materials?
  16. Spring index is
  17. The toughness of a material _________ when it is heated
  18. The expansion joint is mostly used for pipes which carry steam at __________ pressures.
  19. The gears are termed as medium velocity gears, if their peripheral velocity is
  20. The strap end of a connecting rod of steam engine is joined by
  21. A column of length l is fixed at both ends. The equivalent length of the column is
  22. The bearings of heavy series have capacity ________ over the medium series.
  23. Which of the following pipe joints would be suitable for pipes carrying steam?
  24. When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic…
  25. For high speed engines, the cam follower should move with
  26. The crest diameter of a screw thread is same as
  27. The taper on cotter varies from
  28. The bending moment M and a torque T is applied on a solid circular shaft. If the maximum bending stress…
  29. In a partial journal bearing, the angle of contact of the bearing with the journal is
  30. The face of the tooth is the