Q5.For limit state of collapse, the partial safety factors recommended by IS 456
: 2000 for estimating the design strength of concrete and reinforcing steel are
respectively
Answer : Option CExplaination / Solution: No Explaination.
Q7.A rectangular concrete beam of width 120 mm and depth 200 mm is prestressed
by pre tensioning to a force of 150 kN at an eccentricity of 20 mm. The crosssectional
area of the prestressing steel is 87.5 mm2. Take modulus of elasticity of
steel and concrete as 2.1 × 105 MPa 3.0 × 104 MPa respectively. The percentage
loss of stress in the prestressing steel due to elastic deformation of concrete is
Answer : Option BExplaination / Solution: No Explaination.
Q8.Consider points P and Q in the x - y plane, with P = (1,0) and Q = (0,1). The line integral along the semicircle with the line segment PQ as
its diameter
Q9.A thin walled cylindrical pressure vessel having a radius of 0.5 m and wall
thickness of 25 mm is subjected to an internal pressure of 700 kPa. The hoop
stress developed is
Answer : Option AExplaination / Solution: No Explaination.