Civil Engineering Gate Yearwise 

Civil Engineering GATE 2021 Set-1 Questions with Answer

Ques 27 Civil

The liquid forms of particulate air pollutants are

A

dust and mist

B

mist and spray

C

smoke and spray

D

fly ash and fumes



Ques 28 Civil

The shape of the most commonly designed highway vertical curve is

A

circular (single radius)

B

circular (multiple radii)

C

parabolic

D

spiral



Ques 29 Civil

A highway designed for 80 km/h speed has a horizontal curve section with radius 250 m. If the design lateral friction is assumed to develop fully, the required super elevation is

A

0.02

B

0.05

C

0.07

D

0.09



Ques 30 Civil

Which of the following is NOT a correct statement?

A

The first reading from a level station is a 'Fore Sight'.

B

Basic principle of surveying is to work from whole to parts.

C

Contours of different elevations may intersect each other in case of an overhanging cliff.

D

Planimeter is used for measuring 'area'.



Ques 31 Civil

Which of the following is/are correct statement(s)?

A

Back Bearing of a line is equal to Fore Bearing ±180°.

B

If the whole circle bearing of a line is 270°, its reduced bearing is 90° NW.

C

The boundary of water of a calm water pond will represent contour line.

D

In the case of fixed hair stadia tachometry, the staff intercept will be larger, when the staff is held nearer to the observation point.



Ques 32 Civil

Consider the limit:

The limit (correct up to one decimal place) is _______.


0.5 to 0.5 is the correct answer.


Ques 33 Civil

The volume determined from ∬V 8 xyz dV for V = [2, 3]× [1, 3] × [0, 1] will be (in integer) _______.


15 to 15 is the correct answer.


Ques 34 Civil

The state of stress in a deformable body is shown in the figure. Consider transformation of the stress from the x-y coordinate system to the X-Y coordinate system. The angle θ, locating the X-axis, is assumed to be positive when measured from the x-axis in counter-clockwise direction.

The absolute magnitude of the shear stress component σxy (in MPa, round off to one decimal place) in x-y coordinate system is _______.


95 to 97 is the correct answer.


Ques 35 Civil

Based on drained triaxial shear tests on sands and clays, the representative variations of volumetric strain (ΔV/V) with the shear strain (γ) is shown in the figure.

Choose the CORRECT option regarding the representative behaviour exhibited by Curve P and Curve Q.

A

Curve P represents dense sand and overconsolidated clay, while Curve Q represents loose sand and normally consolidated clay

B

Curve P represents dense sand and normally consolidated clay, while Curve Q represents loose sand and overconsolidated clay

C

Curve P represents loose sand and overconsolidated clay, while Curve Q represents dense sand and normally consolidated clay

D

Curve P represents loose sand and normally consolidated clay, while Curve Q represents dense sand and overconsolidated clay



Ques 36 Civil

A fluid flowing steadily in a circular pipe of radius R has a velocity that is everywhere parallel to the axis (centerline) of the pipe. The velocity distribution along the radial direction is Vr = U(1 - (r2 / R2)), where r is the radial distance as measured from the pipe axis and U is the maximum velocity at r = 0. The average velocity of the fluid in the pipe is

A

U / 2

B

U / 3

C

U / 4

D

(5/6)U



Ques 37 Civil

A water sample is analyzed for coliform organisms by the multiple-tube fermentation method. The results of confirmed test are as follows:

The most probable number (MPN) of coliform organisms for the above results is to be obtained using the following MPN Index.
The MPN of coliform organisms per 100 mL is

A

1100000

B

110000

C

1100

D

110



Ques 38 Civil

Ammonia nitrogen is present in a given wastewater sample as the ammonium ion (NH4+) and ammonia (NH3). If pH is the only deciding factor for the proportion of these two constituents, which of the following is a correct statement?

A

At pH above 9.25, only NH4+ will be present.

B

At pH below 9.25, NH3 will be predominant.

C

At pH 7.0, NH4+ and NH3 will be found in equal measures.

D

At pH 7.0, NH4+ will be predominant.



Ques 39 Civil

On a road, the speed - density relationship of a traffic stream is given by u = 70 - 0.7k (where speed, u, is in km/h and density, k, is in veh/km). At the capacity condition, the average time headway will be

A

0.5 s

B

1.0 s

C

1.6 s

D

2.1 s



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