Description : The field density and field moisture content of a soil can be determined by 1. Core cutter method 2. Sand replacement method 3. Proctor compaction test 4. Modified proctor compaction test (a) 1, 2, 3 & 4 (b) 1 & 2 only (c) 2 & 3 only (d) 2 & 4 only
Last Answer : (b) 1 & 2 only
Description : Pick up the correct statement from the following: (A) O.M.C. refers to the moisture corresponding to the maximum point on the moisture content dry density curve (B) The line which shows moisture content dry ... void line (C) The free fall of hammer for compaction is 30.5 cm (D) All the above
Last Answer : (D) All the above
Description : The maximum dry density upto which any soil can be compacted depends upon (A) Moisture content only (B) Amount of compaction energy only (C) Both moisture content and amount of compaction energy (D) None of the above
Last Answer : (C) Both moisture content and amount of compaction energy
Description : The change of moisture content of soils, changes the (A) Value of the angle of repose (B) Amount of compaction required (C) Cohesive strength of soil (D) All the above
Last Answer : Answer: Option D
Description : The main factor which affects the infiltration capacity, is (A) Thickness of saturated layer (B) Depth of surface detention (C) Soil moisture (D) All the above
Description : Pick up the incorrect statement from the following: (A) Compaction has no effect on the structure of a soil (B) Permeability decreases with increase in the dry density of a compacted soil (C) ... a dry side compacted soil (D) Dry side compaction soils swell more when given access to moisture
Last Answer : (A) Compaction has no effect on the structure of a soil
Description : The infiltration capacity during rain storm, is considerably reduced due to (A) Surface detention (B) Soil moisture (C) Compaction due to rain (D) All the above
Description : While determining the workability of concrete mix, the compaction factor test is ------than the slump cone test [ A ] Less accurate [ B ] More accurate [ C ] Approximate method [ D ] None of the above
Last Answer : [ B ] More accurate
Description : For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be (A) 0.75 - 0.80 (B) 0.80 - 0.85 (C) 0.85 - 0.92 (D) Above 0.92
Description : The factor which affects workability, is (A) Water content and its temperature (B) Shape and size of the aggregates (C) Air entraining agents (D) All the above
Description : The most determinant factor of soil which affects the plant growth is a. pH b. Soil composition c. Soil Texture d. Soil moisture
Last Answer : a. pH
Description : With the increase in the amount of compaction energy (A) Optimum water content increases but maximum dry density decreases (B) Optimum water content decreases but maximum dry density increases ( ... and maximum dry density increase (D) Both optimum water content and maximum dry density decrease
Last Answer : Answer: Option B
Description : Describe the procedure for determination of workability by compaction factor method.
Last Answer : Procedure for determination of workability by compaction factor method: The procedure of determining the workability of concrete using compaction factor as per IS: 1199-1959 is as follows. 1. Take the freshly ... upon calculated C.F., the degree of workability can be designated as follows.
Description : _________ is the average distance a molecule moves before colliding with another molecule. a. mean free path b. path allowance c. compacting factor d. molecular space
Last Answer : mean free path
Description : Wp and Wf are the weights of a cylinder containing partially compacted and fully compacted concrete. If the compaction factor (Wp/Wf ) is 0.95, the workability of concrete is (A) Extremely low (B) Very low (C) Low (D) High
Last Answer : Option D
Description : Workability of concrete mix with low water cement ratio is determined by (A) Tensile strength test (B) Slump test (C) Compaction factor test (D) Flexural strength test
Last Answer : Answer: Option C
Description : For high degree of workability , the compaction factor is (a) 0.65 (b) 0.75 (c) 0.85 (d) 0.95
Last Answer : (d) 0.95
Description : The workability of concrete is expressed by (a) Water-cement ratio (b) Slump value (c) Compaction factor (d) Both (a) and (b)
Last Answer : (d) Both (a) and (b)
Description : As the workability increases compaction factor [ A ] Decreases [ B ] Increases [ C ] Remains same [ D ] None of the above
Last Answer : [ B ] Increases
Description : Workability of a concrete – mix is determined by (i)Slump cone test (ii)Compaction factor test (iii)Vee bee test [ A ] i [ B ] ii [ C ] i and ii [ D ] i, ii and iii
Last Answer : [ D ] i, ii and iii
Description : A compaction factor of 0.75 indicates ________workability [ A ] Very low [ B ] Low [ C ] Medium [ D ] High
Last Answer : [ A ] Very low
Description : Workability of concrete mix with low water cement ratio is determined by [ A ] Tensile strength test [ B ] Slump cone test [ C ] Compaction factor test [ D ] Flexural strength test
Last Answer : [ C ] Compaction factor test
Description : The most suitable equipment for compacting clayey soils is a (A) Smooth wheeled roller (B) Pneumatic tyred roller (C) Sheep foot roller (D) Vibrator
Description : The process of hardening the concrete by keeping its surface moist is known (A) Placing (B) Wetting (C) Curing (D) Compacting
Description : While compacting the concrete by a mechanical vibrator, the slump should not exceed (A) 2.5 cm (B) 5.0 cm (C) 7.5 cm (D) 10 cm
Description : For compacting plain concrete road surface of thickness less than 20 cm, we use (A) Internal vibrator (B) Screed vibrator (C) Form vibrator (D) None of these
Description : The process of mixing, transporting, placing and compacting concrete using Ordinary Port land Cement should not take more than (A) 30 minutes (B) 40 minutes (C) 60 minutes (D) 90 minutes
Last Answer : Answer: Option A
Description : The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called (A) Segregation (B) Bleeding (C) Bulking (D) Creep
Description : The bearing capacity of a water logged soil can be improved by (A) Compacting the soil (B) Draining the soil (C) Increasing the depth of foundation (D) Grouting
Last Answer : Option B
Description : The process of mixing, transporting, placing and compacting the cement, concrete should not take more than. (a) 30 minutes (b) 60minutes (c) 90 minutes (d) 120mm
Last Answer : (a) 30 minutes
Description : For compacting plain concrete road surface of thickness less than 20 cm, the following vibrator is used. [ A ] Internal vibrator [ B ] Screed vibrator [ C ] Form vibrator [ D ] None of the above
Last Answer : [ B ] Screed vibrator
Description : The maximum dry density to which a soil may be compacted to depends upon a) Soil water content * b) The process of compaction c) The voids ratio d) Is independent of the type of soil
Last Answer : a) Soil water content *
Description : Most important factor affecting threshing efficiency a)peripheral speed of the drum b)cylinder concave clearance c)moisture content of crop d)feed rate
Last Answer : a)peripheral speed of the drum
Description : Pick up the correct statement from the following: (A) Excess quantities of iron and manganese in water, cause discolouration of clothes (B) Lead and barium salts have toxic effect (C) Higher copper content affects the lungs (D) All the above
Description : Presence of moisture in a refrigerant affects the working of (a) compressor (b) condenser (c) evaparator (d) expansion valve.
Last Answer : Ans: a
Description : Suggest the compaction factor for the following degree of workability.
Last Answer : Suggest the compaction factor for the following degree of workability.
Description : For determining the moisture content of a soil sample, the following data is available Weight of container = 260 g, Weight of soil sample and = 320 g container, Weight of soil sample (dried) and = 310 g container. The moisture content of the soil sample, is (A) 15 % (B) 18 % (C) 20 % (D) 25 %
Last Answer : (C) 20 %
Description : A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm3 . If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is (A) 11.1 % (B) 55.6 % (C) 69.6 % (D) None of these
Last Answer : (B) 55.6 %
Description : W is the weight of soil having a moisture content w. If V is the volume of proctor's mould, the dry density of the soil is (A) WV/(1 + w) (B) V/w (1 + w) (C) W/V(1 + w) (D) V (1 + w)/W
Last Answer : (C) W/V(1 + w)
Description : The property of a soil which permits water to percolate through it, is called (A) Moisture content (B) Permeability (C) Capillarity (D) None of these
Last Answer : (B) Permeability
Description : A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.6. If the moisture content in the soil is 20%, the degree of saturation is (A) 20 % (B) 77 % (C) 92 % (D) None of these
Description : The internal molecular attraction of a soil, the cohesion (A) Decreases as the moisture content increases (B) Increases as the moisture content decreases (C) Is more in well compacted clays (D) Depends upon the external applied load
Description : For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as (A) Dry of OMC and wet of OMC (B) Wet of OMC and dry of OMC (C) Wet of OMC and wet of OMC (D) Dry of OMC and dry of OMC where OMC is optimum moisture content
Description : A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the void ratio, is (A) 0.858 (B) 0.860 (C) 0.862 (D) 0.864
Last Answer : Option C
Description : A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the degree of saturation, is (A) 95.4 % (B) 95.5 % (C) 95.6 % (D) 95.7 %
Description : In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The liquid limit of the soil, is (A) 35 % (B) 50 % (C) 65 % (D) None of these
Description : If the natural moisture content, the liquid limit and plastic limit of a soil sample are stated as 30.5%, 42.5% and 22.5% respectively, the ratio of liquidity index and plastic index, is (A) (B) ½ (C) 2 (D) 2½
Description : 260 g of wet soil was taken in a pycnometer jar of weight 400 g in order to find the moisture content in the soil, with specific gravity of soil particles 2.75. The weight of soil and remaining water filled in pycnometer without air ... is (A) 24.2 % (B) 18.2 % (C) 53.8 % (D) None of these
Description : Soils containing organic matters (A) Are of spongy nature (B) Swell with decrease of moisture (C) Shrink with increase of moisture content (D) None of these
Description : Pick up the correct statement from the following: (A) The dry density reduces by addition of water after attaining optimum moisture content (B) The line joining the peak of three moisture content graphs ... be compacted to a very high density as compared to fine grained soils (D) All the above