A closely coiled helical spring is of mean diameter (D) and spring wire diameter (d). The spring index is the ratio of

Related MCQs

• Two closely-coiled helical springs 'A' and 'B' of the same material, same number of turns and made from same wire are subjected to an axial load W. The mean diameter of spring 'A' is double the mean diameter of spring 'B'. The ratio of deflections in spring 'B' to spring 'A' will be
• Two closely coiled helical springs 'A' and 'B' are equal in all respects but the diameter of wire of spring 'A' is double that of spring 'B'. The stiffness of spring 'B' will be
• The closed-coiled helical springs are made from the same small diameter wire, one wound on 2.5 cm diameter core and the other on 1.25 cm diameter core. If each spring has n coils, the ratio of their spring constants would be
• Two closely coiled helical springs 'A' and 'B' are equal in all respects but the number of turns of spring 'A' is half that of spring 'B'. The ratio of deflections in spring 'A' to spring 'B' is
• Two closely coiled helical springs 'A' and 'B' are equal in all respects but the number of turns of spring 'A' is double that of spring 'B'. The stiffness of spring 'A' will be
• A closely-coiled helical spring is cut into two halves. The stiffness of the resulting spring will be
• The stiffness of a closely-coiled helical spring is
• When a closely-coiled helical spring is subjected to an axial load, it is said to be under
• A composite spring is made by joining two springs end to end one spring having twice the stiffness of the other. The ratio of the stiffness of the composite spring to that of the stiffness of the two springs could be
• Two rods A and B are subjectd to equal load P. Rod A is tapering with bigger diameter D at the support and small end diameter as D/2. Rod B is of uniform cross section with diameter D. The ratio of elongation of rod A to that of B would be