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Theory Of Structures Civil Engineering Practice Mcq Question And Answer

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Civil Engineering Practice Mcq Question and Answer1.

A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be

Answer & Solution

Answer: Option D
Solution:
Def.max (A)= PL3/48EI;
Def.max (B)= 5wL4/384EI; w=P/L,
= 5PL3/384EI.
Ratio= (PL3)/48EI * 384EI/(5PL3) = 8/5.

2.
Principal planes are subjected to

Answer & Solution

Answer: Option A
No explanation is given for this question 

3.
Y are the bending moment, moment of inertia, radius of curvature, modulus of If M, I, R, E, F, and elasticity stress and the depth of the neutral axis at section, then

Answer & Solution

Answer: Option C
No explanation is given for this question 

4.
A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is

Answer & Solution

Answer: Option C
No explanation is given for this question 

5.
A masonry dam (density = 20,000 N/m³) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be

Answer & Solution

Answer: Option C
No explanation is given for this question 

6.
The ratio of the maximum deflections of a simply supported beam with a central load W and of a cantilever of same length and with a load W at its free end, is

Answer & Solution

Answer: Option D
No explanation is given for this question

7.
The ratio of the length and depth of a simply supported rectangular beam which experiences maximum bending stress equal to tensile stress, due to same load at its mid span, is

Answer & Solution

Answer: Option B
No explanation is given for this question 

8.
The ratio of the length and diameter of a simply supported uniform circular beam which experiences maximum bending stress equal to tensile stress due to same load at its mid span, is

Answer & Solution

Answer: Option C
No explanation is given for this question

9.
a uniform circular bar of diameter d and length , which extends by an The deflection of amount under a tensile pull , when it carries the same load at its mid-span, is

Answer & Solution

Answer: Option C
No explanation is given for this question

10.
A three hinged arch is generally hinged at its supports and

None of these
   


   




Answer & Solution

Answer: Option C

No explanation is given for this question

11.
Shear strain energy theory for the failure of a material at elastic limit, is due to

Answer & Solution

Answer: Option D
No explanation is given for this question

12.
The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is

Answer & Solution

Answer: Option C
No explanation is given for this question

13.
A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm². If the slope at the ends is 0.005 radian and the value of E = 0.2 × 106 N/mm², the depth of the joist, is

Answer & Solution

Answer: Option D
No explanation is given for this question

14.
A short column (30 cm × 20 cm) carries a load P 1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be

Answer & Solution

Answer: Option C
No explanation is given for this question

15.
A compound truss may be formed by connecting two simple rigid frames, by

Answer & Solution

Answer: Option B
No explanation is given for this question

16.
If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span,

Answer & Solution

Answer: Option D
No explanation is given for this question

17.
constant, depth of a cantilever of length of uniform strength loaded with Keeping breadth uniformly distributed load varies from zero at the free end and

Answer & Solution

Answer: Option B
No explanation is given for this question

18.
A cantilever of length ‘L’ is subjected to a bending moment ‘M’ at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is

Answer & Solution

Answer: Option D
No explanation is given for this question

19.
A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm², the deflection of the free end, is

Answer & Solution

Answer: Option D
No explanation is given for this question

20.
In the truss, the force in the member AC is

Answer & Solution

Answer: Option D
No explanation is given for this question

21.
If a concrete column 200 × 200 mm in cross-section is reinforced with four steel bars of 1200 mm² total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm² and Es is 15 Ec

Answer & Solution

Answer: Option C
No explanation is given for this question 

22.
Slenderness ratio of a long column, is

Answer & Solution

Answer: Option D
No explanation is given for this question

23.
The ratio of the area of cross-section of a circular section to the area of its core, is

Answer & Solution

Answer: Option D
No explanation is given for this question

24.
A truss containing j joints and m members, will be a simple truss if

Answer & Solution

Answer: Option A
No explanation is given for this question

25.
For beams breadth is constant,

Answer & Solution

Answer: Option B

No explanation
26.

Flat spiral springs

Answer & Solution

Answer: Option D
No explanation is given for this question 

27.
The ratio of lateral strain to axial strain of a homogeneous material, is known

Answer & Solution

Answer: Option C
No explanation is given for this question

28.
A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100°C. If steel = 0.000012/C°, Esteel = 0.2 MN/mm², the tensile force developed at a temperature of 50°C, is

Answer & Solution

Answer: Option C
No explanation is given for this question

29.
In case of principal axes of a section

Answer & Solution

Answer: Option C
No explanation is given for this question

30.
A close coil helical spring when subjected to a moment M having its axis along the axis of the helix

Answer & Solution

Answer: Option A
No explanation is given for this question

31.
The forces in the members of simple trusses, may be analysed by

Answer & Solution

Answer: Option D
No explanation is given for this question

32.
The moment of inertia of a triangular section (height h, base b) about its base, is

Answer & Solution

Answer: Option C
No explanation is given for this question

33.
Maximum shear stress theory for the failure of a material at the elastic limit, is known

Answer & Solution

Answer: Option A
No explanation is given for this question

34.
Total strain energy theory for the failure of a material at elastic limit, is known

Answer & Solution

Answer: Option D
No explanation is given for this question

35.
Maximum principal stress theory for the failure of a material at elastic point, is known

Answer & Solution

Answer: Option C
No explanation is given for this question
    

36.
The locus of reaction of a two hinged semi-circular arch, is

Answer & Solution

Answer: Option A
No explanation is given for this question

37.
The ratio of maximum shear stress to average shear stress of a circular beam, is

Answer & Solution

Answer: Option D
No explanation is given for this question

38.
P = 4π² EI/L² is the equation of Euler's crippling load if

Answer & Solution

Answer: Option A
No explanation is given for this question

39.
The shape factor of standard rolled beam section varies from

Answer & Solution

Answer: Option A
No explanation is given for this question

40.
In plastic analysis, the shape factor for a circular section, is

Answer & Solution

Answer: Option C
No explanation is given for this question  

.

41.The ratio of the deflections of the free end of a cantilever due to an isolated load at 1/3rd and 2/3rd of the span, is

Answer & Solution

Answer: Option B
No explanation is given for this question

42.
A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If Esteel = 2 × 106 kg/cm², the side of the rod, is

Answer & Solution

Answer: Option C
No explanation is given for this question

43.
The assumption in the theory of bending of beams is:

Answer & Solution

Answer: Option D
No explanation is given for this question

44.
The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span; flexural rigidity being EI, is

Answer & Solution

Answer: Option D
No explanation is given for this question

45.
The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying

Answer & Solution

Answer: Option B
No explanation is given for this question 

46.
For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is

Answer & Solution

Answer: Option D
No explanation is given for this question

47.
H V are the algebraic sums of the forces resolved horizontally and vertically respectively, M is the algebraic sum of the moments of forces about any point, for the equilibrium of the body acted upon

Answer & Solution

Answer: Option D
No explanation is given for this question48.

The ratio of crippling loads of a column having both the ends fixed to the column having both the ends hinged, is

Answer & Solution

Answer: Option D
No explanation is given for this question

49.
The equivalent length of a column of length L, having both the ends hinged, is

Answer & Solution

Answer: Option B
No explanation is given for this question

50.
There are two hinged semicircular arches A, B and C of radii 5 m, 7.5 m and 10 m respectively and each carries a concentrated load W at their crowns. The horizontal thrust at their supports will be in the ratio of

Answer & Solution

Answer: Option C
No explanation is given for this question
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