MCQOPTIONS
Saved Bookmarks
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.
| 801. |
In rock masses reduction in strength occurs due to the presence of relatively large quantities of |
| A. | silica |
| B. | iron oxides |
| C. | orthoclase |
| D. | hornblende |
| Answer» E. | |
| 802. |
Timber can be made more fire resistant by |
| A. | dipping and steeping process |
| B. | hot and cold open tank treatment |
| C. | charring |
| D. | Sir Abel's process |
| Answer» E. | |
| 803. |
Consider the following statements : Seasoning of timber results is 1. increased strength 2. increased durability.3. reduced resilience.Of these statements : |
| A. | 1, 2 and 3 are correct |
| B. | 1 and 3 are correct |
| C. | 1 and 2 are correct |
| D. | 2 and 3 are correct |
| Answer» B. 1 and 3 are correct | |
| 804. |
The loss of prestress due to shrinkage of concrete is the product of |
| A. | modular ratio and percentage of steel |
| B. | modulus of elasticity of concrete and shrinkage of concrete |
| C. | modulus of elasticity of steel and shrinkage of concrete |
| D. | modular ratio and modulus of elasticity of steel |
| Answer» D. modular ratio and modulus of elasticity of steel | |
| 805. |
Which one of the following statements is true to trickling filter sludge ? |
| A. | It has a comparatively low sludge volume index |
| B. | It is more difficult to dewater than activated sludge |
| C. | It has a comparatively low concentration of sludge solids |
| D. | It is bulky |
| Answer» B. It is more difficult to dewater than activated sludge | |
| 806. |
Under load, the void ratio of a submerged saturated clay decreases from 1.00 to 0.92. What will be the ultimate settlement of the 2 m thick clay due to consolidation ? |
| A. | 20 mm |
| B. | 40 mm |
| C. | 80 mm |
| D. | 160 mm |
| Answer» D. 160 mm | |
| 807. |
Lime stabilisation method is particularly suitably and has been found successful in stabilising |
| A. | clayey soil with expansive nature in water-logged areas |
| B. | sandy desertic area |
| C. | soils having liquid limit less than 30% |
| D. | wind-blown soil deposits |
| Answer» B. sandy desertic area | |
| 808. |
A 4-hour rainfall in a catchment of 250 km2 produces rainfall depths of 6.2 cm and 5.0 cm in successive 2-hour unit periods. Assuming the φ index of the soil to be 1.2 cm/hour, the run-off volume in ha-m will be |
| A. | 16 |
| B. | 22 |
| C. | 1600 |
| D. | 2200 |
| Answer» D. 2200 | |
| 809. |
When a particular discharge is flowing in a horizontal pipe, a mercury-water U-tube manometer connccted to the entrance and throat of a venturimeter fitted in the pipe recorded a deflection of 25 cm. If the same discharge flowed through the same pipe kept at an inclination of 45° to the horizontal, then the corresponding deflection recorded by the U-tube manometer will be |
| A. | 25 2 cm |
| B. | 25/2 cm |
| C. | 25/2 cm |
| D. | 25 cm |
| Answer» E. | |
| 810. |
A cylindrical vessel with a constant plane area of 1 m2 is rotated about its vertical axis such that the liquid inside the vessel is about to spill. If the height of the vessel is 2 m and the height of the paraboloid at 1 m, then the volume (in m3) of the liquid in the vessel will be |
| A. | 2 |
| B. | 1.5 |
| C. | 1 |
| D. | 0.5 |
| Answer» C. 1 | |
| 811. |
Gypsum is added to Portland cement during its manufacture so that it may |
| A. | accelerate the setting time |
| B. | retard the setting time |
| C. | decrease the burning temperature |
| D. | facilitate grinding |
| Answer» C. decrease the burning temperature | |
| 812. |
A thin cylindrical shell of internal diameter D is subject to an internal pressure 'p'. If σy is the yield stress of the material of the cylinder, then based on the maximum shear theory, the thickness of the cylinder will be (in kg/cm2) is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 813. |
A circular shaft subjected to torsion undergoes a twist of 1° in a length of 120 cm. If the maximum shear stress induced is limited to 1000 kg/cm2 and if modulus of rigidity G = 0.8 x 106 kg/cm2, then the radius of the shaft should be |
| A. | π/18 |
| B. | 18/π |
| C. | π/27 |
| D. | 27/π |
| Answer» E. | |
| 814. |
The force in member 1 of the truss shown in the given figure is |
| A. | 4T compressive |
| B. | 36T tensile |
| C. | 16T tensile |
| D. | 20T tensile |
| Answer» D. 20T tensile | |
| 815. |
A T-section is used as a simply supported beam with uniform loading. The maximum bending stress for a given load will occur at the |
| A. | top of the section |
| B. | C.G. of the section |
| C. | mid-point of the depth of section |
| D. | bottom of the section |
| Answer» E. | |
| 816. |
The bending moment diagram for an overhanging beam is shown in the given figure :The points of contraflexure would include |
| A. | A and F |
| B. | B and E |
| C. | C and D |
| D. | A and D |
| Answer» C. C and D | |
| 817. |
A steel bar of 2 m length is fixed at both ends at 20°C. The coefficient of thermal expansion is 11 x 10-6/°C and the modulus of the elasticity is 2 x 106 kg/cm2. If the temperature is changed to 18°C, then the bar will be experience a stress of |
| A. | 22 kg/cm2 (tensile) |
| B. | 22 kg/cm2 (compressive) |
| C. | 44 kg/cm2 (compressive) |
| D. | 44 kg/cm2 (tensile) |
| Answer» D. 44 kg/cm2 (tensile) | |
| 818. |
A mild steel bar is in three parts, each 20 cm long. The diameters of parts AB, BC and CD are 2 cm, 1 cm and 3 cm respectively.The bar is subjected to an axial pull of 4t as shown in the given figure. If E = 2 x 106 kg/cm2 and the elongations in the three parts of the bar are Δ1, Δ2 and Δ3 respectively, then the ratio of the greatest to the least of these elongations will be |
| A. | 9 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» D. 2 | |
| 819. |
A steel cable of 2 cm diameter is used to lift a load of 500π kg. Given that, E = 2 x 106 kg/cm2 and the length of the cable is 10 m, the elongation of the cable due to the load will be |
| A. | 0.5 cm |
| B. | 0.25 |
| C. | 1 cm |
| D. | 1/π cm |
| Answer» C. 1 cm | |
| 820. |
ABC is rigid bar. It is hinged at A and suspended at B and C by two wires BD and CE made of copper and steel respectively, as shown in the given figure. The bar carries load of 1t at F, mid-way between B and C.Given Ac = 4 cm2, A = 2 cm2, Ec = 1 x 106 kg/cm2, Es = 2 x 106 kg/cm2.Ps is the force in the steel wire and Pc is the force in the copper wire, the ratio Pc/Ps will be |
| A. | 0.5 |
| B. | 4 |
| C. | 0.25 |
| D. | 2 |
| Answer» E. | |
| 821. |
Given that, t = thickness of the plates, b = width of the plates, d = diameter of the rivets, n = number of rivets in a line, σt = permissible tensile stress.The tearing strength of the joint is given by |
| A. | t(b - nd)σt |
| B. | t(b + nd)σt |
| C. | (bt - nd/t)σt |
| D. | (bt - nd/t)σt |
| Answer» B. t(b + nd)σt | |
| 822. |
If an element is subjected to pure shearing stress τxy then the maximum principal stress is equal to |
| A. | 2τxy |
| B. | τxy/2 |
| C. | τxy |
| D. | 1 - (τxy)2 |
| Answer» D. 1 - (τxy)2 | |
| 823. |
A torsion member is fabricated from two concentric thin tubes. At the ends, the tubes are welded to rigid discs so that both the tubes are twisted as a unit. The radius of the outer tube is 2r and that of the inner tube is r. If the shear stresses developed in the outer tube is τ, then the shear stress in the inner tube will be. |
| A. | τ |
| B. | 0.25 τ |
| C. | 0.75 τ |
| D. | 0.5 τ |
| Answer» E. | |
| 824. |
Consider the following statements :In a uni-dimensional stress system, the principal plane is defined as one on which the 1. shear stress is zero. 2. normal stress is zero.3. shear stress is maximum. 4. normal stress is maximum. Of these statements : |
| A. | 1 and 2 are correct |
| B. | 2 and 3 are correct |
| C. | 1 and 4 are correct |
| D. | 3 and 4 are correct |
| Answer» D. 3 and 4 are correct | |
| 825. |
Which of the following rules are used in choosing the repeating variables in dimensional analysis :1. Repeating variables should include the dependent variables2. Repeating variables should contain all primary units used in describing the variables in the problem3. Repeating variables should combine among themselves.4. Repeating variables should not contain the dependent variables.Select the correct answer using the codes given below : |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 2 and 4 |
| D. | 3 and 4 |
| Answer» D. 3 and 4 | |
| 826. |
Which of the following pairs are correctly matched ?1. Standard penetration test....Relative density2. Vane shear....Cohesion3. Consolidation test....Bearing capacitySelect the correct answer using the codes given below : |
| A. | 1, 2 and 3 |
| B. | 1 alone |
| C. | 1 and 2 |
| D. | 2 and 3 |
| Answer» D. 2 and 3 | |
| 827. |
Which of the following data would be required for the design of progressive type computerised traffic signal system in a series of intersection on a busy street ?1. Volume of fast moving traffic 2. Volume of pedestrain traffic3. Volume of slow traffic 4. Approach speed of fast moving traffic.Select the correct answer using the codes given below : |
| A. | 1, 2, 4 and 5 |
| B. | 1, 2, 3 and 4 |
| C. | 2, 3, and 5 |
| D. | 1, 3, 4 and 5 |
| Answer» C. 2, 3, and 5 | |
| 828. |
Which of the following Pairs regarding explanations and the terminologies pertaining to masonry are correctly matched ?1. Reveal....projecting stone to serve as support for joist.2. Throating....groove provided on the underside of projecting elements likes sills.3. Gable....triangle shaped masonry works provided at the ends of sloped roof.4. Freeze....vertical sides of finished opening for doors and windows.Select the correct answer using the codes given below : |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 3 and 4 |
| D. | 1 and 4 |
| Answer» C. 3 and 4 | |
| 829. |
Consider the following statements regarding tensile test diagrams for carbon steel with varying carbon contents :As the carbon content increases1. the ultimate strength of steel decreases 2. the elongation before fracture increases3. the ductility of the metal decreases 4. the ultimate strength increases.Of these statements : |
| A. | 3 and 4 are correct |
| B. | 1 and 3 are correct |
| C. | 1, 2 and 3 are correct |
| D. | 1 and 2 are correct |
| Answer» D. 1 and 2 are correct | |
| 830. |
Consider the following statements regarding the working stress design of under-reinforced RC sections:1. The neutral axis depth will be greater than that of a balanced section2. The stress in steel in tension will reach its maximum permissible value first3. The moment of resistance will be less than that of the balanced section4. The concrete on'the tension side is also to be considered for calculating the moment of resistance of the section.Of these statement : |
| A. | 1 and 2 are correct |
| B. | 1 and 4 are correct |
| C. | 3 and 4 are correct |
| D. | 2 and 3 are correct |
| Answer» E. | |
| 831. |
Consider the following statements :A : For beams, I-sections are more economical than rectangular section. R : Most of the material is concentrated away from the centroid. Of these statements : |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not a correct explanation of A |
| C. | A is try but R is false |
| D. | A is false but R is true. |
| Answer» B. Both A and R are true but R is not a correct explanation of A | |
| 832. |
Consider the following statements :A : An isotropic material is always homogeneous. R : An isotropic material is one in which all the properties are the same in all the directionsat every point.Of these statements : |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not a correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» C. A is true but R is false | |
| 833. |
A concentrated load acting on the surface of a soil produces a stress of 19.1 kPa at a depth of 1 m below it. Using Boussinesq's expression, the stress at 2 m depth is |
| A. | 9.55 kPa |
| B. | 6.37 kPa |
| C. | 4.775 kPa |
| D. | 4.37 kPa |
| Answer» D. 4.37 kPa | |
| 834. |
A cohesionless soil having an angle of shearing resistance of φ, is standing at a slope angle of i. The factor of safety of the slope is tan i |
| A. | [A]. |
| B. | tan i - tan φ |
| C. | [C]. |
| D. | tan φ - tan i |
| Answer» D. tan φ - tan i | |
| 835. |
The upstream slope of an earth dam under steady seepage condition is |
| A. | equipotential line |
| B. | phreaticline |
| C. | flow-line |
| D. | seepage line |
| Answer» B. phreaticline | |
| 836. |
Consider the following statements related to triaxial test :1. Failure occurs along pre-determined plane.2. Intermediate and minor principal stresses are equal.3. Volume changes can be measured.4. Field conditions can be simulated.Of these statements : |
| A. | 1, 2 and 3 are correct |
| B. | 1, 2 and 4 are correct |
| C. | 1, 3 and 4 are correct |
| D. | 2, 3 and 4 are correct |
| Answer» E. | |
| 837. |
A vane 20 cm long and 10 cm in diameter was pressed into a soft marine clay at the bottom of a bore hole. Torque was applied gradually and failure occurred at 1000 kg cm. The cohesion of the clay in kg/cm2 is : |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 838. |
Two different granular soils are placed in a permeameter tube and flow is allowed to take place under a constant total head. The total head and pressure head at point A in centimeters, are respectively. |
| A. | 75, 75 |
| B. | 25, 75 |
| C. | 25, 25 |
| D. | 75, 25 |
| Answer» C. 25, 25 | |
| 839. |
A hydro-electric reservoir can supply water continuously at a rate of 100 m3/s. The head is 75 m. The theoretical power that can be developed is |
| A. | 10000 mhp |
| B. | 100000 mhp |
| C. | 7500 mhp |
| D. | 7500 kW |
| Answer» C. 7500 mhp | |
| 840. |
Two pipe systems in series are said to be equivalent when |
| A. | the average diameter in both systems is same |
| B. | the average friction factor in both systems is same |
| C. | the total length of the pipes is same in both the systems |
| D. | the discharge under the same head is same in both the systems |
| Answer» D. the discharge under the same head is same in both the systems | |
| 841. |
The head loss in a pipe of diameter d, carrying oil at a flow rate Q over a distance l is h. The pipe is replaced by another with half the diameter, all other things remaining the same. The head loss in this case will be |
| A. | 0.5 h |
| B. | 2.0 h |
| C. | 8.0 h |
| D. | 32.0 h |
| Answer» E. | |
| 842. |
A very tiny sphere is settling down in a viscous liquid at Reynolds number = 0.2. Its drag coefficient is equal to |
| A. | 320 |
| B. | 120 |
| C. | 80 |
| D. | 5 |
| Answer» C. 80 | |
| 843. |
The ratio of pressures between two points A and B located respectively at depths 0.5 m, and 2 m below a constant level of water in a tank is |
| A. | 1 : 2 |
| B. | 1 : 2 |
| C. | 1 : 4 |
| D. | 1 : 16 |
| Answer» D. 1 : 16 | |
| 844. |
Which of the following equations will be satisfied by irrotational flow of an incompressible fluid? |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 845. |
Consider a close-coiled helical spring of radius R, subjected to a load P. The spring consists of n turns of wire with wire radius r. The stiffness of the spring is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 846. |
A shaft PQRS is subjected to torques at P, Q, R, S as shown in the given figure.The maximum torque for the shaft section occurs between |
| A. | P and Q |
| B. | P and R |
| C. | Q and R |
| D. | R and S |
| Answer» D. R and S | |
| 847. |
Consider the following statements :For the N-girder shown in the given figure, ILD for force in the member, L0U1 is obtained by1. multiplying the ordinate of ILD for shear in the panel L0L1, by sec θ.2. dividing the ordinate of ILD for moment at L1 by cos θ x L0L13. dividing the ordinate of ILD for moment at L1 by L1 U1Of these statements : |
| A. | only 3 is correct |
| B. | 1 and 3 are correct |
| C. | 1 and 2 are correct |
| D. | 1, 2 and 3 are correct |
| Answer» B. 1 and 3 are correct | |
| 848. |
A beam has a solid circular cross-section having diameter d. If a section of the beam is subjected to a shear force F the maximum shear stress in the cross-section is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 849. |
The effective throat thickness in mm of a 6 mm size fillet weld with an angle of 75° between the fusion faces is |
| A. | 3.6 |
| B. | 4 |
| C. | 4.2 |
| D. | 4.5 |
| Answer» D. 4.5 | |
| 850. |
When two moving bodies collide with each other, their velocity of separation bears a constant ratio to their velocity of approach. This ratio is termed as coefficient of |
| A. | collidity |
| B. | friction |
| C. | restitution |
| D. | permeability |
| Answer» D. permeability | |