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MCQOPTIONS
This section includes 1888 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
The separation of boundary layer takes place when the pressure gradient is |
| A. | negative |
| B. | positive |
| C. | zero |
| D. | constant |
| Answer» C. zero | |
| 752. |
If the stream function is ψ = 2 xy, then the velocity at a point (1, 2) is equal to |
| A. | 2 |
| B. | 4 |
| C. | 20 |
| D. | 16 |
| Answer» D. 16 | |
| 753. |
A clay layer 5 m thick in field takes 300 days to attain 50% consolidation with condition of double drainage. If the same clay layer is underlain by hard rock then the time taken to attain 50% consolidation will be |
| A. | 300 days |
| B. | 600 days |
| C. | 900 days |
| D. | 1200 days |
| Answer» E. | |
| 754. |
Active earth pressure per metre length on the retaining wall with a smooth vertical back as shown in the given figure will be |
| A. | 81 t |
| B. | 27 t |
| C. | 2 t |
| D. | 1 t |
| Answer» C. 2 t | |
| 755. |
Consider the following statements in relation to the given sketch :1. Soil is partially saturated at degree of saturation = 60%2. Void ratio = 40%3. Water content = 30%4. Saturated unit weight = 1.5 g/ccOf these statements : |
| A. | 1, 2 and 3 are correct |
| B. | 1, 3 and 4 are correct |
| C. | 2, 3 and 4 are correct |
| D. | 1, 2 and 4 are correct |
| Answer» B. 1, 3 and 4 are correct | |
| 756. |
A soil fails under an axial vertical stress of 100 kN/m2 in unconfined compression test. The failure plane makes an angle of 50° with the horizontal. The shear parameters c and φ respectively will be |
| A. | 41.9 kN/m2, 0 |
| B. | 50.0 kN/m2, 0 |
| C. | 41.9 kN/m2, 10° |
| D. | 50.0 kN/m2, 10° |
| Answer» D. 50.0 kN/m2, 10° | |
| 757. |
Due to rise in temperature, the viscosity and unit weight of percolating fluid are reduced to 70% and 90% respectively. Other things being constant, the change in coefficient of permeability will be |
| A. | 20.0% |
| B. | 28.6% |
| C. | 63.0% |
| D. | 77.8% |
| Answer» C. 63.0% | |
| 758. |
A soil has liquid limit of 60%, plastic limit of 35% and shrinkage limit of 20% and it has a natural moisture content of 50%. The liquidity index of soil is |
| A. | 1.5 |
| B. | 1.25 |
| C. | 0.6 |
| D. | 0.4 |
| Answer» D. 0.4 | |
| 759. |
A clay sample has a void ratio of 0.50 in dry state and specific gravity of solids = 2.70. Its shrinkage limit will be |
| A. | 12% |
| B. | 13.5% |
| C. | 18.5% |
| D. | 22% |
| Answer» D. 22% | |
| 760. |
Lacustrine soils are soils |
| A. | transported by rivers and streams |
| B. | transported by glaciers |
| C. | deposited in sea beds |
| D. | deposited in lake beds |
| Answer» E. | |
| 761. |
If 'p' is the precipitation, 'a' is the area represented by a rainguage, and n is the number of raingauges in a catchment area, then the weighted mean rainfall is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 762. |
In steady laminar flow of a liquid through a circular pipe of internal diameter D, carrying a constant discharge, the hydraulic gradient is inversely proportional to |
| A. | D |
| B. | D2 |
| C. | D4 |
| D. | D5 |
| Answer» C. D4 | |
| 763. |
Weigh-batching proceeds on |
| A. | the assumption of the declared weight in each bag of cement |
| B. | weighing the contents of each bag |
| C. | accurately estimating the weight of each material to be used in each batch |
| D. | the assumption of correct dry weight of each size range of each material and the weight of water. |
| Answer» D. the assumption of correct dry weight of each size range of each material and the weight of water. | |
| 764. |
Gypsum is used as an admixture in cement grouts for |
| A. | accelerating the setting time |
| B. | retarding the setting time |
| C. | increasing the plasticity |
| D. | reducing the grout shrinkage |
| Answer» C. increasing the plasticity | |
| 765. |
General shrinkage in cement concrete is caused by |
| A. | carbonation |
| B. | stresses due to external load |
| C. | drying the starting with a stiff consistency |
| D. | drying starting with a wetter consistency. |
| Answer» E. | |
| 766. |
The following are the sewage treatment processes :1. Primary sedimentation2. Screening3. Grit removal4. Secondary sedimentation.When only preliminary treatment is to be given for sewage, select the required treatment proceses including their correct sequence from the codes given below: |
| A. | 2, 3 |
| B. | 2, 3, 1 |
| C. | 1, 2, 3, 4 |
| D. | 3, 1, 2, 4 |
| Answer» C. 1, 2, 3, 4 | |
| 767. |
Which one of the following would contain water with the maximum amount of turbidity ? |
| A. | Lakes |
| B. | Oceans |
| C. | Rivers |
| D. | Wells |
| Answer» D. Wells | |
| 768. |
The cleaning of slow sand filter is done by |
| A. | reversing the direction of flow of water |
| B. | passing air through the filter |
| C. | passing a solution of alum and lime through the filter |
| D. | scraping off the top layers of sand and admitting water |
| Answer» E. | |
| 769. |
In a tilted aerial photograph, if the swing is 230°, then the rotation angle is equal to |
| A. | 140° |
| B. | 130° |
| C. | 50° |
| D. | 25° |
| Answer» C. 50° | |
| 770. |
The standard time meridian in India is 82°30'E. If the standard time at any instant is 20 hours 10 minutes, the local mean time for the place at a longitude of 20°E would be |
| A. | 4h PM |
| B. | 4h 10m PM |
| C. | lh 20m PM |
| D. | 0h 20m AM |
| Answer» B. 4h 10m PM | |
| 771. |
Ratio of the width of the car parking area required at kerb for 30° parking relative to 60° parking is approximately |
| A. | 0.5 |
| B. | 0.7 |
| C. | 0.8 |
| D. | 2 |
| Answer» E. | |
| 772. |
Assuming the safe stopping sight distance to be 80 m on a flat highway section and with a setback distance of 10 m, what would be the radius of the negotiable horizontal curve ? |
| A. | 800 m |
| B. | 160 m |
| C. | 80 m |
| D. | 70 m |
| Answer» D. 70 m | |
| 773. |
A simply supported beam of span 'L' carries a concentrated load 'W' at mid-span. If the width 'b' of the beam is constant and its depth is varying throughout the span, then what should be its mid-span depth, when design stress is 'f' ? |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 774. |
For the beam shown in the given figure, the maximum positive bending moment is equal to negative bending moment. The value of L1 is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 775. |
The maximum deflection of a fixed beam carrying a central load W is equal to |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 776. |
The side AD of the square block ABCD as shown in the given figure is fixed at the base and it is under a state of simple shear causing shear stress τ and shear strain π, where The distorted shape is AB'C'D. The diagonal strain (linear) will be |
| A. | [A]. |
| B. | [B]. |
| C. | φ2 |
| D. | φ |
| Answer» B. [B]. | |
| 777. |
The length, coefficient of thermal expansion and Young's modulus of bar 'A' are twice that of bar 'B'. If the temperature of both bars is increased by the same amount while preventing any expansion, then the ratio of stress developed in bar A to that in bar B will be |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 16 |
| Answer» C. 8 | |
| 778. |
The nail diameter should not be more than(t = least thickness of the wooden member to be connected) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 779. |
A fixed beam as shown in Fig. I is loaded with a U.D.L. over the entire span, the total load being W; when load was just increased to W1, the deformed shape as shown in Fig. II was seen. The value of W1 (plastic moment of resistance = Mp) is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 780. |
The thickness of web for unstiffened plate girder with clear distance d between the flanges shall not be less than |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 781. |
What is the effective net width of plate shown in the given sketch, for carrying tension ? |
| A. | 212.5 mm |
| B. | 237.5 mm |
| C. | 250 mm |
| D. | 275 mm |
| Answer» E. | |
| 782. |
For the beam shown in the given figure, the collapse load P is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 783. |
A steel frame is shown in the given figure.If joint O of the frame is rigid, the rotational stiffness of the frame at point O is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 784. |
Two closed-coil springs of stiffness s and 2s are arranged in series in one case and in parallel in the other case. The ratio of stiffness of springs connected in series to parallel is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 785. |
A simply supported beam of span l and flexural rigidity EI, carries a unit point load at its centre. The strain energy in the beam due to bending is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 786. |
A section of a solid circular shaft with diameter D is subjected to bending moment 'M' and torque (T). The expression for maximum principal stress at the section is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 787. |
A circular shaft is subjected to a twisting moment T and bending moment M. The ratio of maximum bending stress to maximum shear stress is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 788. |
A column ABCD (2y1 x 2y2) of rectangular section carries a load P at Z having the co-ordinates (x, y) as shown in the given figure.If the compressive streses are taken as positive and area A = 2y1 x 2y2 = 4y1 y2 and the moment of inertia about x and y axis being Ixx and Iyy respectively, then the stress at the corner D is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 789. |
A two-hinged semicircular arch of radius 'R' carries a concentrated load 'W' at the crown. The horizontal thrust is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 790. |
A cantilever carries a load P at C as shown in the given figure. The deflection at B is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 791. |
A welded steel plate girder consisting of two flange plates of 350 mm x 16 mm and a web plate of 1000 mm x 6 mm, requires |
| A. | nostiffeners |
| B. | vertical stiffeners |
| C. | intermediate vertical stiffeners |
| D. | vertical and horizontal stiffeners |
| Answer» D. vertical and horizontal stiffeners | |
| 792. |
Given that the density of earth is ω, the angle of repose is φ and h is the height of the wall and the earth retained is level, the active earth Pressure 'P' on retaining wall is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 793. |
A short column of external diameter D and internal diameter d, is subjected to a load W, with an eccentricity 'e', causing zero stress at an extreme fibre. Then the value of 'e' must be |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 794. |
A cantilever beam AB, fixed at A and carrying a load W at the free end B, is found to deflect by δ at the mid-point of AB. The deflection of B due to a load W/2 at the mid-point will be |
| A. | 2δ |
| B. | δ |
| C. | δ/2 |
| D. | δ/4 |
| Answer» E. | |
| 795. |
In the structure shown in the given figure, the fixed end moment at joint 'A' is |
| A. | PL/16 |
| B. | 5PL/48 |
| C. | 7PL/64 |
| D. | PL/8 |
| Answer» C. 7PL/64 | |
| 796. |
Consider the following statements : If two planes at right angles carry only shear stress of magnitude 'q', then the1. diameter of Mohr's circle would equal 2q2. centre of the Mohr's circle would lie at the origin3. principal stresses are unlike and have magnitude 'q'4. angle between the principal plane and the plane of maximum shear would be equal to 45° Of these statements : |
| A. | 1 and 2 are correct |
| B. | 2 and 4 are correct |
| C. | 3 and 4 are correct |
| D. | 1, 2, 3 and 4 are correct |
| Answer» E. | |
| 797. |
In the given figure, σ1 and the σ2 and maximum and minimum principal stresses. In order that the resultant stress on the plane AB is the value of θ should be |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 75° |
| Answer» C. 60° | |
| 798. |
A mild steel bar is 40 cm long. The lengths of parts AB and BC of the bar are 20 cm each. It is loaded as shown in the given figure. The ratio of the stresses, σ1 in part AB to σ2 in part BC is |
| A. | 2 |
| B. | 1/2 |
| C. | 4 |
| D. | 1/4 |
| Answer» C. 4 | |
| 799. |
Consider the following statements :1. Welded structures are usually lighter than riveted structures.2. Welding allows the arrangement of structural components in such a manner that the joint provides maximum efficiency.3. During welding, the members do not get distorted.Of these statements : |
| A. | 1, 2 and 3 correct |
| B. | 1 and 2 are correct |
| C. | 2 and 3 are correct |
| D. | 1 and 3 are correct |
| Answer» B. 1 and 2 are correct | |
| 800. |
A compound bar consisting of material A and B is tightly secured at the ends. The coefficients of thermal expansion of A is more than that of B. When the temperature is increased the stresses induced will be |
| A. | tensile in both the materials |
| B. | tensile in material A and compressive in material B |
| C. | compressive in material A and tensile in material B |
| D. | compressive in both the materials |
| Answer» D. compressive in both the materials | |