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291.

The moment of inertia of an area will be least with respect to

A.	central axis	B.	horizontal
C.	vertical axis	D.	moment of area does not depend on axes

292.

As compared to the Brinell hardness lest, the Rockwell method

A.	makes a thinner indentation	B.	may be used on thicker materials
C.	is much slower	D.	all of the above

293.

A section is subjected to reversal of stress. Choice exists for selecting any of the following section. Which one should be selected?

A.	Hollow pipe	B.	Equal angle iron
C.	Unequal angle iron	D.	T-section

294.

For any shaft the number of critical speed is

A.	1	B.	2
C.	depends on size and load	D.	infinite
E.	depends on external load and moment of inertia

295.

For a given stress the ratio of moment of resistance of a square beam with its side horizontal compared to when the diagonal is horizontal is

A.	2	B.	?2
C.	1.2	D.	1.5

296.

Two cantilever beams are of equal length. One carries a uniformly distributed load and other carries same load but concentrated at the free end. The ratio of maximum deflection is

A.	5?6	B.	2?3
C.	1?2	D.	1?3
E.	5?12

297.

A beam of uniform strength is the one in which

A.	B.M. is same throughout the beam	B.	Deflection is same throughout the length
C.	Bending stress is same in every section along the longitudinal axis	D.	Shear stress is uniform throughout the beam
E.	None of the above

298.

When a no. of loads rest upon a beam, the deflection at any point is equal to the sum of the deflections at this point due to each of the loads taken separately. This is according to

A.	Castiglano's theorem	B.	Principle of least work
C.	Max's well theorem	D.	Theory of flexure
E.	Moment shear relation

299.

A solid circular shaft of diameter D carries are axial load W. If the same load is applied axially on a hollow circular shaft of inner diameter D/2, the ratio of stress in a solid shaft to a hallow one is

A.	1?2	B.	1?4
C.	4?3	D.	3?4

300.

In a simply supported beam of span 3 mts., a point load of 60 kN acts at a distance of 1 mt. from left support, the shear force at 1 mt. from rt. Support is

A.	20 kN	B.	40 kN
C.	60 kN	D.	80 kN