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WorksheetsDesign of Machine Elements
Total questions: 5
Worksheet time: 3mins
Determine number of coils in a helical compression spring, if modulus of rigidity is 80 Gpa and spring stiffness is 50 N/ mm. Assume wire diameter and spring index as 8 mm and 5 respectively
a. 11.8 turns
b. 12.8 turns
c. 13.3 turns
d. None of the above
Which factor is used to consider the effects of direct shear stress and torsional shear stress when curvature effect stress is not considered?
a. Shear stress concentration factor
b. Wahl shear stress concentration factor
c. Both a. and b.
d. None of the above
Determine number of coils in a helical compression spring, if modulus of rigidity is 80 Gpa and spring stiffness is 50 N/ mm. Assume wire diameter and spring index as 8 mm and 5 respectively
a. 11.8 turns
b. 12.8 turns
c. 13.3 turns
d. None of the above
Which type of springs have only active coils?
a. Helical compression springs
b. Helical tension springs
c. Both a. and b.
d. None of the above
5) Solid length for helical compression springs having square and ground ends is given as _________
a. (n + 2)d
b. (n + 3)d
c. (n + 1)d
d. None of the above
