Engineering Economy Online Test – Multiple Choice Questions and Answers 1. The maximum value of effective stress in the past divided by the present value, is defined as over consolidation ratio (OCR). The O.C.R. of an over consolidated clay is 1 less than 1 more than 1 none of these 2. The water content of soil is defined as the ratio of weight of water to weight of air in voids volume of water to volume of given soil volume of water to volume of voids in soil weight of water to weight of solids of given mass of soil 3. When drainage is permitted under initially applied normal stress only and full primarily consolidation is allowed to take place, the test is known as drained test consolidated undrained test quick test none of these 4. The liquid limit and plastic limit exist in sandy soils gravel soils clay soils silty soils 5. The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter, is known liquid limit shrinkage limit permeability limit plastic limit 6. Under-reamed piles are generally precast piles bored piles driven piles All the above 7. Accurate determination of water content, is made by oven-drying method alcohol method calcium carbide method sand bath method 8. The coefficient of compressibility of soil, is the ratio of rate of loading to that of settlement strain to stress stress to strain stress to settlement 9. 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 35% 50% 65% none of these 10. Stoke’s law sates that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon shape of grain size of grain weight of grain shape, size and weight of grain Loading … Question 1 of 10
