GATE CE topic:civil-engineering PYQs & Answers — Page 22

Questions 211–220 of 1300. Imported answers require independent review unless marked reviewed.

Consider the beam ACDEB given in the figure. Which of the following statements is/are correct:

Diagram for Civil Engineering question 41

Your answerSelect all correct options. You can choose more than one.

Bending moment is zero between the points A and C

There is a sudden jump in shear force at the point D

There is a sudden jump in bending moment at the point E

Bending moment is zero somewhere between the points D and E

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For a partially saturated soil deposit at a construction site, water content (w) is 15%, degree of saturation (S) is 67%, void ratio (e) is 0.6 and specific gravity of solids in the soil (Gₛ) is 2.67. Consider unit weight of water as 9.81 kN/m³. To fully saturate 5 m³ of this soil, the required weight of water (in kN) will be ________ (round off to the nearest integer).

Your answerChoose one option.

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In the context of construction project management, which of the following statements is/are true:

Your answerSelect all correct options. You can choose more than one.

A dummy activity will consume time and resources

The program evaluation and review technique (PERT) is best suited for projects with large uncertainties in the duration of activities

A Gant chart is commonly used for identifying the ‘critical path’ of activities in a project

Free float is the amount of time by which the start of an activity can be delayed without causing a delay in the start of a following activity

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Consider flow in a long and very wide rectangular open channel. Width of the channel can be considered as infinity compared to the depth of flow. Uniform flow depth is 1.0 m. The bed slope of the channel is 0.0001. The Manning roughness coefficient value is 0.02. Acceleration due to gravity,

can be taken as 9.81 m/s

The critical depth (in m) corresponding to the flow rate resulting from the above conditions is _____ (round off to one decimal place).

Your answerChoose one option.

0.4

0.3

0.6

0.1

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Lacey’s regime equations, followed in India for making scour calculations while designing hydraulic structures across alluvial channels, are given below. Regarding these equations, which of the following statements is/are true:

where,

is discharge and

is silt factor.

Your answerSelect all correct options. You can choose more than one.

is the depth of scour below the existing riverbed

is the Lacey’s waterway width

is the average grain size diameter of the bed material in centimetres

is the depth of scour below the design flood level

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Match the following in Column I with Column II.

Column I	Column II
(1) Vehicle Damage Factor	A. Stability of subgrade soil
(2) Passenger Car Unit	B. Capacity of a roadway
(3) Perception Reaction Time	C. Design rigid pavement
(4) California Bearing Ratio	D. Design flexible pavement
	E. Stopping sight distance

Your answerChoose one option.

(1)-(D); (2)-(B); (3)-(E); (4)-(A)

(1)-(C); (2)-(B); (3)-(D); (4)-(A)

(1)-(D); (2)-(E); (3)-(B); (4)-(A)

(1)-(D); (2)-(B); (3)-(A); (4)-(E)

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MgCl₂ and CaSO₄ salts are added to 1 litre of distilled deionized water and mixed until completely dissolved. Total Dissolved Solids (TDS) concentration is 500 mg/l, and Total Hardness (TH) is 400 mg/l (as CaCO₃). The amounts of MgCl₂ and CaSO₄ added are calculated (rounded off to the nearest integer). Which of the following options is/are true:

Atomic weights: Ca(40), Mg(24), S(32), O(16), Cl(35.5), C(12)

Your answerSelect all correct options. You can choose more than one.

Amount of MgCl₂ added is 143 mg

Amount of CaSO₄ added is 357 mg

Amount of MgCl₂ added is 103 mg

Amount of CaSO₄ added is 397 mg

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Consider the function given below and pick one or more CORRECT state(s) from the following choices.

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f(x) has a local minimum at x = 3.

f(x) has a local maximum at x = 3.

f(x) has a local minimum at x = 2.

f(x) has a local maximum at x = 2.

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A facultative pond system is employed for wastewater treatment. Which of the following statements is/are true:

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The dissolved oxygen concentration will be high during daytime compared to night-time

The pH will be high during daytime compared to night-time

The dissolved oxygen concentration will be low during daytime compared to night-time

The pH will be low during daytime compared to night-time

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Pick the CORRECT eigen value(s) of the matrix [A] from the following choices.

Your answerSelect all correct options. You can choose more than one.

-2

-10

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GATE CE topic:civil-engineering PYQs

Question 41

Question 41

Question 42

Question 42

Question 43

Question 43

Question 44

Question 44

Question 45

Question 45