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221.

A self-supporting steel chimney transmits the lateral forces to the foundation by

A.	propped beam action	B.	cantilever action
C.	simply supported beam action	D.	fixed beam action

222.

A strip of steel 75 mm wide 40 mm thick is bent round a circular drum of 4.96 m outside diameter. If E = 2 x 105 N/mm2, the maximum stress due to bending will be

A.	1600 N/mm2	B.	1200 N/mm2
C.	800 N/mm2	D.	400 N/mm2

223.

A rectangular beam 200 mm deep by 100 mm wide-subjected to maximum bending moment of 500 kNm. The maximum stress in the beam will be

A.	250 N/mm2	B.	500 N/mm2
C.	750 N/mm2	D.	1500 N/mm2

224.

A spring steel ribbon 3.2 mm wide, 0.5 mm thick is wound on a 500 mm diameter cylinder. If E = 2 x 105 N/mm2, the maximum stress in the steel will be

A.	100 N/mm2	B.	200 N/mm2
C.	400 N/mm2	D.	800 N/mm2

225.

The elongation of a conical bar under its own weight is equal to

A.	that of a prismatic bar of the same length	B.	one third that of a prismatic bar of the same length
C.	One fourth that of a prismatic bar of the same length	D.	one sixth that of a prismatic bar of the same length

226.

Castellated beams are used for

A.	light construction	B.	resisting bending moment only
C.	loads not passing through shear centre	D.	sections subjected to alternate compressive and shear stresses

227.

Two bars of sifferent materials are of the same size and are subjected to same tensile forces. If the bars have unit elongation in the ratio of 7 : 3, then the ratio of modulii of elasticity of the two materials is

A.	8 ; 3	B.	3 ; 8
C.	64 ; 9	D.	9 ; 64

228.

Eccentrically loaded columns are generally subjected to

A.	axial compression and tension	B.	bending stress and axial compression
C.	shear stress and axial compression	D.	bending stress, shear stress and axial compression

229.

The slenderness rtio of a column is zero when

A.	its length is exactly equal to radius of gyration	B.	its length is half the radius of gyration
C.	total load carried is less than half the dead weight	D.	its length is supported on all sides throughout its full length

230.

If the rivet value is 2000 N and the force in the member is 2000 N, the number of rivets required for the connection of the member to a gusset plate is

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