Q. “His face________with joy when the solution of the puzzle was______to him.” The words that best fill the blanks in the above sentence are (A) shone, shown (B) shone, shone (C) shown, shone (D) shown, shown Ans: shone, shown
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Q. An aircraft approaches the threshold of a runway strip at a speed of 200 km/h. The pilot decelerates the aircraft at a rate of 1.697 m/s2 and takes 18 s to exit the runway strip. If the deceleration after exiting the runway is 1 m/s2, then the distance (in m, up to one decimal
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Q. Given the following data: design life n = 15 years, lane distribution factor D = 0.75, annual rate of growth of commercial vehicles r = 6%, vehicle damage factor F = 4 and initial traffic in the year of completion of construction = 3000 Commercial Vehicles Per Day (CVPD). As per IRC:37-2012, the design
Q. A waste activated sludge (WAS) is to be blended with green waste (GW). The carbon (C) and nitrogen (N) contents, per kg of WAS and GW, on dry basis are given in the table. Parameter WAS GW Carbon (g) 54 360 Nitrogen (g) 10 6 The ratio of WAS to GW required (up to
Q. The ultimate BOD (𝐿0) of a wastewater sample is estimated as 87% of COD. The COD of this wastewater is 300 mg/L. Considering first order BOD reaction rate constant k (use natural log) = 0.23 per day and temperature coefficient θ = 1.047, the BOD value (in mg/L, up to one decimal place) after
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Q. A water sample analysis data is given below. Ion Concentration, mg/L Atomic Weight Ca2+ 60 40 Mg2+ 30 24.31 HCO3- 400 61 The carbonate hardness (expressed as mg/L of CaCO3, up to one decimal place) for the water sample is Ans: 272.0 – 274.0 Sol:
Q. In a laboratory, a flow experiment is performed over a hydraulic structure. The measured values of discharge and velocity are 0.05 m3/s and 0.25 m/s, respectively. If the full scale structure (30 times bigger) is subjected to a discharge of 270 m3/s, then the time scale (model to full scale) value (up to two
Q. Rainfall depth over a watershed is monitored through six number of well distributed rain gauges. Gauged data are given below Rain Gauge Number 1 2 3 4 5 6 Rainfall Depth (mm) 470 465 435 525 480 510 Area of Thiessen Polygon (×104 m2) 95 100 98 80 85 92 The Thiessen mean value
Q. A rigid smooth retaining wall of height 7 m with vertical backface retains saturated clay as backfill. The saturated unit weight and undrained cohesion of the backfill are 17.2 kN/m3 and 20 kPa, respectively. The difference in the active lateral forces on the wall (in kN per meter length of wall, up to two
Q. The void ratio of a soil is 0.55 at an effective normal stress of 140 kPa. The compression index of the soil is 0.25. In order to reduce the void ratio to 0.4, an increase in the magnitude of effective normal stress (in kPa, up to one decimal place) should be Ans: 416.0-420.0
