1
GATE CE 2009
MCQ (Single Correct Answer)
+2
-0.6
An agricultural land of 437ha is to be irrigated for a particular crop. The base period of the crop is 90 days and the total depth of water required by the crop is 105cm. If a rainfall of 15cm occurs during the base period, the duty of irrigation water is
A
437ha/cumec
B
486ha/cumec
C
741ha/cumec
D
864ha/cumec
2
GATE CE 2009
MCQ (Single Correct Answer)
+2
-0.6
A rectangular concrete beam of width $$120$$ $$mm$$ and depth $$200$$ $$mm$$ is prestressed by pretensioning to a force of $$150$$ $$kN$$ at an eccentricity of $$20$$ $$mm.$$ The cross sectional area of the prestressing steel is $$187.5\,\,m{m^2}.$$ Take modulus of elasticity of steel and concrete as $$2.1 \times {10^5}\,\,MPa$$ and $$3.0 \times {10^4}\,\,MPa$$ respectively. The percentage loss of stress in the prestressing steel due to elastic deformation of concrete is
A
$$8.75$$
B
$$6.125$$
C
$$4.81$$
D
$$2.19$$
3
GATE CE 2009
MCQ (Single Correct Answer)
+1
-0.3
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
A
1.15 and 1.5
B
1.0 and 1.0
C
1.5 and 1.15
D
1.5 and 1.0
4
GATE CE 2009
MCQ (Single Correct Answer)
+1
-0.3
The square root of the ratio of moment of inertia of the cross-section to its cross-sectional area is called
A
second moment of area
B
slenderness ratio
C
section modulus
D
radius of gyration
EXAM MAP