Q. A core cutter of 130 mm height has inner and outer diameters of 100 mm and 106 mm, respectively. The area ratio of the core cutter (in %, up to two decimal places) is Ans: 12.30-12.40 Sol:
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Q. In a shrinkage limit test, the volume and mass of a dry soil pat are found to be 50 cm3 and 88 g, respectively. The specific gravity of the soil solids is 2.71 and the density of water is 1 g/cc. The shrinkage limit (in %, up to two decimal places) is Ans:
Q. In a fillet weld, the direct shear stress and bending tensile stress are 50 MPa and 150 MPa, respectively. As per IS 800: 2007, the equivalent stress (in MPa, up to two decimal places) will be Ans: 173.10 – 173.30 Sol:
Q. The frequency distribution of the compressive strength of 20 concrete cube specimens is given in the table. f (MPa) Number of specimens with compressive strength equal to f 23 4 28 2 22.5 5 31 5 29 4 If 𝜇 is the mean strength of the specimens and 𝜎 is the standard deviation, the
Q. A flow field is given by 𝑢 = 𝑦2, 𝑣 = −𝑥𝑦, 𝑤 = 0. Value of the z-component of the angular velocity (in radians per unit time, up to two decimal places) at the point (0, −1, 1) is Ans: 1.5 rad/sec Sol:
Q. A well-designed signalized intersection is one in which the A. crossing conflicts are increased B. total delay is minimized C. cycle time is equal to the sum of red and green times in all phases D. cycle time is equal to the sum of red and yellow times in all phases Ans: total delay
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Q. The speed-density relationship for a road section is shown in the figure. The shape of the flow-density relationship is A. piecewise linear B. parabolic C. initially linear then parabolic D. initially parabolic then linear Ans: initially linear then parabolic Sol: We know, Traffic capacity (q) = velocity (v) × density (k) ⇒ q =
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Q. A bitumen sample has been graded as VG30 as per IS : 73-2013. The ‘30’ in the grade means that A. penetration of bitumen at 25oC is between 20 and 40 B. viscosity of bitumen at 60oC is between 2400 and 3600 Poise C. ductility of bitumen at 27oC is more than 30 cm
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Q. There are 20,000 vehicles operating in a city with an average annual travel of 12,000 km per vehicle. The NOx emission rate is 2.0 g/km per vehicle. The total annual release of NOx will be (A) 4,80,000 kg (B) 4,800 kg (C) 480 kg (D) 48 kg Ans: 4,80,000 kg Sol: Total Annual Emission
Bernoulli’s equation is applicable for A. viscous and compressible fluid flow B. inviscid and compressible fluid flow C. inviscid and incompressible fluid flow D. viscous and incompressible fluid flow Ans: Inviscid and incompressible fluid flow
