GATE CE 2021 Paper 2 — page 14

Questions 40–42 of 65. Imported answers require review unless explicitly marked reviewed.

A clay layer of thickness

has a preconsolidation pressure

and an initial void ratio

. The initial effective overburden stress at the mid-height of the layer is

. At the same location, the increment in effective stress due to applied external load is

. The compression and swell indices of the clay are

and

, respectively. If

, then the correct expression to estimate the consolidation settlement (

) of the clay layer is

Your answerChoose one option.

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A rectangular open channel of 6 m width is carrying a discharge of 20 m

/s. Consider the acceleration due to gravity as 9.81 m/s

and assume water as incompressible and inviscid. The depth of flow in the channel at which the specific energy of the flowing water is minimum for the given discharge will then be

Your answerChoose one option.

0.82 m

1.04 m

2.56 m

3.18 m

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Read the statements given below. (i) Value of the wind profile exponent for the ‘very unstable’ atmosphere is smaller than the wind profile exponent for the ‘neutral’ atmosphere. (ii) Downwind concentration of air pollutants due to an elevated point source will be inversely proportional to the wind speed. (iii) Value of the wind profile exponent for the ‘neutral’ atmosphere is smaller than the wind profile exponent for the ‘very unstable’ atmosphere. (iv) Downwind concentration of air pollutants due to an elevated point source will be directly proportional to the wind speed. Select the correct option.

Your answerChoose one option.

(i) is False and (iii) is True

(i) is True and (iv) is True

(ii) is False and (iii) is False

(ii) is False and (iv) is False

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2021 · Paper 2

Question 30

Question 31

Question 32