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GATE 2022 Toppers Weekly Quiz 8

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Question 1

What is the equivalent single wheel load (in KN) of a dual wheel assembly carrying 20440N each or pavement thickness of 25cm? center to center spacing of tyres is 30cm and the distance between the wall of tyres is 11cm

Question 2

A vehicle is travelling at the speed of 72 kmph stopped within 3 second after the application of brake. Determine the average skid resistance

Question 3

In the Marshall method of mix design, the coarse aggregates, fine aggregates, filter and bitumen, having respective specific gravities of 2.56, 2.65, 2.70 and 1.10 are mixed in the ratio of 50, 38.2, 4.7 and 7.1 percent, respectively. The theoretical specific gravity of the mix would be----------.

Question 4

What is the ratio of deflection at the centre for a flexible plate and rigid plate of same diameter?

Question 5

The stresses at corner region of a cement concrete pavement, using Westergard’s stream equation, using the following data:

Wheel load = 4000 kg

Radius of contact area = 11 cm

Modulus of elasticity of cement concrete E = 3.3 x 10⁵ kg/cm²

Modulus of subgrade reaction K = 25 kg/cm³

Poisson’s ratio of subgrade = 0.14

Pavement thickness = 16 cm

Question 6

For a 6 hours duration storm, the ordinates for a flood hydrograph are given below:

Find the direct runoff depth (in cm), if the catchment area is 300 km².
[Assume base flow = 5 m³/s]

Question 7

An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 m³/s. The flood hydrograph has a base flow of 20 m3/s. If the spatial average rainfall in the watershed for the duration of storm is 2 cm and the average loss rate is 0.4 cm/hour, the peak of 2-hour unit hydrograph (in

, up to one decimal place) is_________

Question 8

A 596 km² catchment has a 12 hour unit hydrograph which can be

approximated as a triangle and its time base is 144 hours, the peak ordinate of the unit hydrograph is

Question 9

The peak discharge of a 4-hr unit hydrograph, triangular in shape, for a basin of 108 km², is 20 cumecs. The time base (in hrs)of this hydrograph is

Question 10

The type of flood routing (Group I) and the equation(s) used for the purpose (Group II) are given below.
Group I
P. Hydrologic flood routing
Q. Hydraulic flood routing
Group II
1) Continuity equation
2) Momentum equation
3) Energy equation
The correct match is

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ESE & GATE CE General

Oct 13ESE & GATE CE