The quadrantal bearing of line AB and CA are S 30° E and S 70° E. The inclined angle CAB is __________ .
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Solution
150 Angle CAB =90° +30° +30° =150°
The jam density is given as k and free flow speed is given by u. The maximum flow for a linear traffic speed density model is given by which of the following options?
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Solution
Traffic speed density = k⁄2 × u⁄2
=\(\frac{ku}{4}\)
The ideal form of curve for the summit curve is
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Solution
Ideal form of summit curve is parabolic
A car is moving at a speed of 84 kmph on a road having 2% upward gradient. If the reaction time of driver is 1.5 seconds, assuming that f = 0.15, calculate the distance moved by the vehicle before the carstops?
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Solution
If the BOD5, 20 of waste is 165 mg/L and reaction rate constant (base e) at 20°C is 0.32/day, the ultimate BOD in mg/l is.
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Solution
In disinfection, which of the following forms of chlorine is most effective in killing the pathogenic bacteria
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Solution
HOCl is the most effective for disinfection.
A container carrying water is moved in a horizontal direction with acceleration of 3.75 m/s2
. The angle of inclination of free water surface to horizontal is (in degrees)
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Solution
Two circular footing of diameters D1 and D2 are rested on the surface of the same purely cohesive soil. The ratio of their gross ultimate bearing capacities is
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Solution
For pure clayey soil, bearing capacity does not depend upon diameter of footing
∴The ratio is 1.
The number of π parameters needed to express the function F = (A, V,t, v, L) = 0 are__________.
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Solution
No. of π parameters = (n –m)
n =number of variables =5m = number of fundamental dimensional quantities = 3
∴ π parameter = n – m
= 5 – 3 = 2
If δ1 is the thickness of laminar boundary layer at a distance x1 from the leading edge of the flat plate, the thickness δ2 at x2= 2x1 is equal to
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Solution