Civil Engineering GATE 2022 Set-2 Questions with Answer

Ques 40 Geotechnical Engineering

In a triaxial unconsolidated undrained (UU) test on a saturated clay sample, the cell pressure was 100 kPa. If the deviatoric stress at failure was 150 kPa, then the undrained shear strength of the soil is ________ kPa (in integer).

75 is the correct answer.

Ques 41 Geotechnical Engineering

Match the following in Column X with Column Y:

Which one of the following combinations is correct?

(P)-(I), (Q)-(II), (R)-(V), (S)-(V)

(P)-(II), (Q)-(I), (R)-(IV), (S)-(V)

(P)-(I), (Q)-(III), (R)-(VI), (S)-(IV)

(P)-(I), (Q)-(II), (R)-(V), (S)-(VI)

Ques 42 Geotechnical Engineering

A soil sample is underlying a water column of height h₁, as shown in the figure. The vertical effective stresses at points A, B, and C are σ'_A, σ'_B, and σ'_C respectively. Let γ_sat and γ' be the saturated and submerged unit weights of the soil sample, respectively, and γ_w be the unit weight of water. Which one of the following expressions correctly represents the sum (σ'_A+σ'_B+σ'_C)?

(2h₂+h₃)γ'

(h₁+h₂+h₃)γ'

(h₂+h₃)(γ_sat−γ_w)

(h₁+h₂+h₃)γ_sat

Ques 43 Geotechnical Engineering

A group of total 16 piles are arranged in a square grid format. The center-to-center spacing (s) between adjacent piles is 3 m. The diameter (d) and length of embedment of each pile are 1 m and 20 m, respectively. The design capacity of each pile is 1000 kN in the vertical downward direction. The pile group efficiency (η_g) is given by

where m and n are number of rows and columns in the plan grid of pile arrangement, and θ=tan^-1(d/s).
The design value of the pile group capacity (in kN) in the vertical downward direction is (round off to the nearest integer)

11000 is the correct answer.

Ques 44 Geotechnical Engineering

A saturated compressible clay layer of thickness h is sandwiched between two sand layers, as shown in the figure. Initially, the total vertical stress and pore water pressure at point P, which is located at the mid-depth of the clay layer, were 150 kPa and 25 kPa, respectively. Construction of a building caused an additional total vertical stress of 100 kPa at P. When the vertical effective stress at P is 175 kPa, the percentage of consolidation in the clay layer at P is ___________ (in integer)

50 is the correct answer.

Ques 45 Hydrology and Irrigation Engineering

Match Column X with Column Y:

Which one of the following combinations is correct?

(P)-(IV), (Q)-(III), (R)-(V), (S)-(I), (T)-(II)

(P)-(III), (Q)-(IV), (R)-(V), (S)-(I), (T)-(II)

(P)-(IV), (Q)-(III), (R)-(II), (S)-(I), (T)-(V)

(P)-(III), (Q)-(IV), (R)-(I), (S)-(V), (T)-(II)

Ques 46 Hydrology and Irrigation Engineering

In a certain month, the reference crop evapotranspiration at a location is 6 mm/day. If the crop coefficient and soil coefficient are 1.2 and 0.8, respectively, the actual evapotranspiration in mm/day is

5.76

7.20

6.80

8.00

Ques 47 Hydrology and Irrigation Engineering

A flood control structure having an expected life of n years is designed by considering a flood of return period T years. When T=n, and n→∞, the structure's hydrologic risk of failure in percentage is ________ (round off to one decimal place).

63.2 is the correct answer.

Ques 48 Hydrology and Irrigation Engineering

Water is flowing in a horizontal, frictionless, rectangular channel. A smooth hump is built on the channel floor at a section and its height is gradually increased to reach choked condition in the channel. The depth of water at this section is y₂ and that at its upstream section is y₁. The correct statement(s) for the choked and unchoked conditions in the channel is/are

In choked condition, y₁ decreases if the flow is supercritical and increases if the flow is subcritical.

In choked condition, y₂ is equal to the critical depth if the flow is supercritical or subcritical.

In unchoked condition, y₁ remains unaffected when the flow is supercritical or subcritical.

In choked condition, y₁ increases if the flow is supercritical and decreases if the flow is subcritical.

Ques 49 Hydrology and Irrigation Engineering

A hydraulic jump takes place in a 6 m wide rectangular channel at a point where the upstream depth is 0.5 m (just before the jump). If the discharge in the channel is 30 m³/s and the energy loss in the jump is 1.6 m, then the Froude number computed at the end of the jump is__________ (round off to two decimal places)
(Consider the acceleration due to gravity as 10 m/s².)

0.45 is the correct answer.

Ques 50 Hydrology and Irrigation Engineering

A pump with an efficiency of 80% is used to draw groundwater from a well for irrigating a flat field of area 108 hectares. The base period and delta for paddy crop on this field are 120 days and 144 cm, respectively. Water application efficiency in the field is 80%. The lowest level of water in the well is 10 m below the ground. The minimum required horse power (h.p.) of the pump is ___________. (round off to two decimal places)
(Consider 1 h.p.=746 W; unit weight of water =9810 N/m³)

30.75 is the correct answer.

Ques 51 Logical Reasoning

Given below are two statements and four conclusions drawn based on the statements.
Statement 1: Some soaps are clean.
Statement 2: All clean objects are wet.
Conclusion I: Some clean objects are soaps.
Conclusion II: No clean object is a soap.
Conclusion III: Some wet objects are soaps.
Conclusion IV: All wet objects are soaps.
Which one of the following options can be logically inferred?

Only conclusion I is correct

Either conclusion I or conclusion II is correct

Either conclusion III or conclusion IV is correct

Only conclusion I and conclusion III are correct

Ques 52 Project Management

The activities of a project are given in the following table along with their durations and dependency.

The total float of the activity E (in days) is _________ (in integer)

4 is the correct answer.

1 2 3 4 5

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Civil Engineering GATE 2022 Set-2 Questions with Answer