When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

A. Bending stress only

B. A combination of torsional shear stress and bending

C. Direct shear stress only

D. A combination of bending stress and direct shear stress

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

You can do it
  1. In case of pressure vessels having open ends, the fluid pressure induces
  2. According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter…
  3. In Vickers hardness testing, the pyramid indentor apex is
  4. The following type of nut is used with alien bolt
  5. Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?
  6. According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width…
  7. Auto frettage is the method of
  8. In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged…
  9. According to Indian standard specifications, a grey cast iron designated by 'FG 200' means that the
  10. In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft)
  11. The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard…
  12. The rolling contact bearings as compared to sliding contact bearings have
  13. The property of a material which enables it to be drawn into wires with the application of a tensile…
  14. Which of the following material has the maximum ductility?
  15. The stress in the threaded part of the bolt will be __________ as compared to the shank.
  16. Wahl's stress factor __________ very rapidly as the spring index decreases.
  17. Rankine Gordon formula for buckling is valid for
  18. The strap end of a connecting rod of steam engine is joined by
  19. In order to remove internal stresses produced by hardening the steel, the process usually adopted is
  20. A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum…
  21. If a bearing is designated by the number 305, it means that the bearing is of
  22. A plate with an elliptical hole in the centre, with semi-major axis (A) perpendicular to the direction…
  23. The application of third type levers is found in
  24. A spring is used to
  25. For maximum power, the velocity of the belt will be
  26. Ball bearing type screws are found in following application
  27. According to Indian standards, total numbers of tolerance grades are
  28. The bending moment M and a torque T is applied on a solid circular shaft. If the maximum bending stress…
  29. Plastic flow in ductile materials
  30. In designing a connecting rod, it is considered like __________ for buckling about X-axis.