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211.

The load required to produce a unit deflection in a spring is called

A.	flexural rigidity	B.	torsional rigidity
C.	spring stiffness	D.	Young's modulus

212.

In a leaf spring the length of all the leaves are equal.

True

False

213.

A leaf spring is supported at the

A.	ends and loaded at the centre	B.	centre and loaded at the ends
C.	ends and loaded anywhere	D.	centre and loaded anywhere

214.

When a closely-coiled helical spring is subjected to an axial load, it is said to be under

A.	bending	B.	shear
C.	torsion	D.	crushing

215.

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

A.	1 ? 8	B.	1 ? 4
C.	2	D.	4

216.

In the above question, the ratio of stiffness of spring 'B' to spring 'A' will be

A.	2	B.	4
C.	6	D.	8

217.

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

A.	1 / d	B.	1 / D
C.	D / d	D.	d / D

218.

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

A.	1 ? 8	B.	1 ? 4
C.	1 ? 2	D.	2

219.

The stiffness of a closely-coiled helical spring is

directly

inversely

220.

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

A.	one-sixteenth	B.	one-eighth
C.	one-fourth	D.	one-half