IES 2011 Civil Engineering Solved Question Paper
IES Civil Engineering Solved Question Paper I1. For different concrete specimens, each hydrated tot he same degree, the permeability is
(a) Higher with lower water cement ratio and higher cement content
(b) Lower with lower water cement ratio and higher cement content
(c) Lower with higher water cement ratio and lower cement content
(d) Lower with higher water cement ratio and higher cement content
Ans: (b)
2. Modulus of elasticity of concrete is increased with
(a) Higher W/C ratio (b) Shorter curing period
(c) Lesser vibration (d) Increase in age
Ans: (d)
3. Increase-strain curve of concrete is
(a) A perfect straight line upto failure
(b) Straight line up to 0.002% strain value and then parabolic upto failure
(c) Nearly parabolic up to 0.002% strain value and the a straight line upto failure
(d) Hyperbolic up to 0.002% strain value and then a straight line upto failure
Ans: (c)
5. When percentage of mica present in sand is large, it
(a) Reduces the strength of mortar, or concrete
(b) Increases the strength of mortar or concrete
(c) Has no effect on mortar, or concrete strength
(d) Enhances the strength of mortar, or concrete, but only marginally
Ans: (c)
6. Consider the following statements:
1. Dry rot in sap wood is caused by fungal attack
2. Brown rot in coniferous woods is a result of fungal attack
3. Alternate wetting and drying of unseasoned timber causes ‘powdery’ form of decay
in wood.
Which of these statements are correct?
(a) 1, 2 and 3 b)1 and 2 only c)2 and 3 only d)1 and 3 only
Ans: (a)
7. Which of the following statements refer to correct purpose as regards testing of concrete
by ultrasonic pulse velocity method?
1. To assess the quality of concrete in-situ.
2. To determine the dynamic modulus of elasticity of concrete.
3. To locate the presence of cracks in it
(a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d)1, 2 and 3
Ans: (d)
8. If ‘W’ is the percentage of water required for normal consistency of cement, water to be
added for determination of initial setting time is
(a) 0.50 W (b) 0.62 W (c) 0.75 W (d) 0.85 W
Ans: (d)
9. Consider the following statements
Fibre saturation point in wood is reached when
1. Free water is removed 2. Cell water is removed
3. Shrinkage of wood is rapid 4. Strength gain is rapid
Which of these statements are correct?
(a) 1, 2 and 3 (b) 1 and 2 only (c) 2 and 4 only (d) 1, 3 and 4
Ans: (d)
10. Which of the following theories of failure is most appropriate for a brittle
material?
(a) Maximum principal strain theory
(b) Maximum principal stress theory
(c) Maximum shear stress theory
(d) Maximum strain energy theory
Ans: (b)
11. A simply supported beam AB is subjected to a concentrated load at C, the
centre of the span. The area of the SF diagram from A to C will give
a) BM at C b) Load at S
3c) SF at C d)Difference between BM values at A and C
Ans: (d)
14. Consider the following statements:
1. Failure occurs beyond elastic limit
2. Rupture takes place immediately after elastic limit
3. Permanent set occurs beyond elastic limit
Which of these are considered in the theories of failure?
(a) 1, 2 and 3 (b) 1 and 3 only (c) 2 and 3 only d) 1 and 2 only
Ans: (d)
23. The moment capacity of section at plastic hinge equals
a) Yield moment
b) Zero
c) Fully plastic moment
d) Twice the yield moment
Ans: (c)
24. Which one of the following is the correct ratio of plastic moment to yield moment
for a simply supported beam of uniform square cross section throughout the span
(a) 1.5 (b) 1.7 (c) 2.0 (d) 2.34
Ans: (a)
25. A fixed beam with central point load undergoes a slight settlement at one end.
Select suitable answer from the following:
(a) Moment induced at both ends will be same
(b) Moment induced at the end that has undergone settlement will be maximum
(c) Moment induced will be maximum at the end having no settlement
(d) Zero moment at the end that has settled.
Ans: (c)
26. An increase in temperature on the top fibre of a simply supported beam will cause
(a) Downward deflection
(b) Upward deflection
(c) No deflection
(d) Angular rotation about neutral axis
Ans: (b)
37. In the virtual work method of plastic analysis of steel structures, the virtual quantity is
(a) Slope (b) Moment (c) Load (d) Displacement
Ans: (d)
38. A protective or decorative non-structural element placed at the level of the truss supports and column head is called
(a) Eaves girder (b) Baluster (c ) Eaves board (d) Tie girder
Ans: (c)
39. The purlins in roof trusses are placed at the panel points essentially to avoid
(a) Axial force in rafter (b) Shear force in rafter
(c ) Deflection in rafter (d) Bending moment in rafter
Ans: (d)
40. When the distance between centers of two adjacent rivets connecting the members subjected to either compression or tension exceeds the maximum pitch, then the additional rivets which are not subjected to the calculated stresses are known as
(a) Packing rivets (b) Long-grip rivets
(c) Tacking rivets (d) Auxiliary rivets
Ans: (c)
41. Which of the following conditions is to be satisfied both in elastic and plastic
analyses?
(a) Equilibrium condition (b) Yield condition
(c ) Plastic moment condition (d) Mechanism condition
Ans: (a)
42. The base of a column is subjected to moment. If the intensity of bearing pressure due to axial load is equal to stress due to moment, then the bearing pressure between the base and the concrete is
(a) Uniform compression throughout
(b) Zero at one end and compression at the other end
(c) Tension at one end and compression at the other end
(d) Compression, verying as a parabolic profile
Ans: (b)
43. The allowable shear stress in the web of mild steel beams decreases with
(a) Decrease in h/t ratio (b) Increase in h/t ratio
12(c ) Decrease in thickness (d) Increase in height
Where h is the height and t is the thickness
Ans: (b)
44. The most critical consideration in the design of a rolled steel column carrying axial loads is the
(a) Percentage elongation at yield and the net cross-sectional area
(b) Critical bending strength and axial yield strength of material
(c) Buckling strength based on the net area of the section and percentage elongation at ultimate load
(d) Compressive strength based on slenderness ratio and gross cross-sectional area.
Ans: (d)
45. For an I beam, the shape factor is 1.12. If the allowable stress (with factor of safety in bending as 1.5) is increased by 20% for wind and earthquake loads, the modified load factor is
(a) 1.10 (b) 1.25 (c) 1.35 (d) 1.40
Ans: (d)
46. Top chord of a truss is continuous over joints l apart. Effective lengths of the member in the plane perpendicular to the truss is
(a) 0.7 l (b) 0.85 l (c ) l (d) 1.5 l
Ans: (c)
47. The mechanism method and the statical method guide in estimating
(a) The lower and upper bounds respectively on the strength of structure
(b) The upper and lower bounds respectively on the strength of structure
(c) The lower bound on the strength of structure
(d) The upper bound on the strength of structure
Ans: (b)
48. If the shape factor of a section is 1.5 and the factor of safety to be adopted is 2, then the load factor will be
(a) 3 (b) 4 (c) 1.5 (d) 2
Ans: (a)
