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231.

The intensity of wind pressure is taken as

A.	directly proportinal to wind velocity	B.	universely proportional to wind velocity
C.	directly proportional to square of wind velocity	D.	inversely proportional to square of wind velocity

232.

If the value of Young's modulus of elasticity is zero, it implies that the material is

A.	highly elastic	B.	plastic
C.	visco-elastic	D.	incompressible

233.

The limiting value of span to depth ratio will be least in case of

A.	simply supported slabs spanning in one direction	B.	simply supported slabs spanning in two directions
C.	continuous salb spanning in one direction	D.	cantilever slabs

234.

A square steel bar 20 mm on a side is subjected to an axial compressive load of 8 kN. The normal stress acting on plane 30? to the line action of the axial load will be

A.	0.5 N/mm2	B.	2.5 N/mm2
C.	50 N/mm2	D.	550 N/mm2

235.

When a member is subjected to axial tensile load, the greatest normal stress is equal to

A.	half the maximum shear stress	B.	maximum shear stress
C.	twice the maximum shear stress	D.	four times the maximum shear stress

236.

A piece of steel plate is subjected to perpendicular stresses of 50 Mpa and 30 Mpa both tensile. The normal stress is

A.	8.6 MPa	B.	14.4 MPa
C.	26.6 MPa	D.	48.4 MPa

237.

The tangential stress is

A.	21.5 MPa	B.	36 MPa
C.	48 MPa	D.	26 MPa

238.

The diameter of corresponding Mohr circle will represent

A.	80 MPa	B.	50 MPa
C.	30 MPa	D.	20 MPa

239.

Shear stress on principal planes is

A.	maximum	B.	minimum
C.	zero	D.	None of the above

240.

The local strain energy at a point in a material when shear stress is 80 MN/m2 and G = 27 GN/m2 will be nearly

A.	58.5 kJ/m3	B.	118.5 kJ/m3
C.	438.5 kJ/m3	D.	2348 kJ/m2