Civil Engineering Gate Yearwise 

Civil Engineering GATE 2020 Set-1 Questions with Answer

Ques 14 Civil

The area of an ellipse represented by an equation
x2 / a2 + y2 / b2 = 1 is

A

πab / 4

B

πab / 2

C

πab

D

4πab / 3



Ques 15 Civil

Consider the planar truss shown in the figure (not drawn to the scale).

Neglecting self-weight of the members, the number of zero-force members in the truss under the action of the load P, is

A

6

B

7

C

8

D

9



Ques 16 Civil

A reinforcing steel bar, partially embedded in concrete, is subjected to a tensile force P. The figure that appropriately represents the distribution of the magnitude of bond stress (represented as hatched region), along the embedded length of the bar, is

A

B

C

D



Ques 17 Civil

In a two-dimensional stress analysis, the state of stress at a point P is [σ] = [[σxx, τxy], [τxy, σyy]] The necessary and sufficient condition for existence of the state of pure shear at the point P, is

A

σxx σyy - τxy2 = 0

B

τxy = 0

C

σxx + σyy = 0

D

(σxx - σyy)2 + 4τxy2 = 0



Ques 18 Civil

During the process of hydration of cement, due to an increase in Dicalcium Silicate (C2S) content in cement clinker, the heat of hydration _______.

A

increases

B

decreases

C

intially decreases and then increases

D

does not change



Ques 19 Civil

The Los Angeles test for stone aggregates is used to examine

A

abrasion resistance

B

crushing strength

C

soundness

D

specific gravity



Ques 20 Civil

Which one of the following statements is NOT correct?

A

A clay deposit with a liquidity index greater than unity is in a state of plastic consistency.

B

The cohesion of normally consolidated clay is zero when triaxial test is conducted under consolidated undrained condition.

C

The ultimate bearing capacity of a strip foundation supported on the surface of sandy soil increases in direct proportion to the width of footing.

D

In case of a point load, Boussinesq's equation predicts higher value of vertical stress at a point directly beneath the load as compared to Westergaard's equation.



Ques 21 Civil

In a soil investigation work at a site, Standard Penetration Test (SPT) was conducted at every 1.5 m interval up to 30 m depth. At 3 m depth, the observed number of hammer blows for three successive 150 mm penetrations were 8, 6 and 9, respectively. The SPT N-value at 3 m depth, is

A

23

B

17

C

15

D

14



Ques 22 Civil

Velocity of flow is proportional to the first power of hydraulic gradient in Darcy's law. This law is applicable to

A

laminar flow in porous media

B

transitional flow in porous media

C

turbulent flow in porous media

D

laminar as well as turbulent flow in porous media



Ques 23 Civil

A body floating in a liquid is in a stable state of equilibrium if its

A

metacentre lies above its centre of gravity

B

metacentre lies below its centre of gravity

C

metacentre coincides with its centre of gravity

D

centre of gravity is below its centre of bouyancy



Ques 24 Civil

Uniform flow with velocity U makes an angle θ with the y-axis, as shown in the figure. The velocity potential (Φ), is

A

±U(x sin θ + y cos θ)

B

±U(y sin θ - x cos θ)

C

±U(x sin θ - y cos θ)

D

±U(y sin θ + x cos θ)



Ques 25 Civil

The data for an agricultural field for a specific month are given below:
Pan Evaporation = 100 mm,
Effective Rainfall = 20 mm (after deducting losses due to runoff and deep percolation),
Crop Coefficient = 0.4,
Irrigation Efficiency = 0.5
The amount of irrigation water (in mm) to be applied to the field in that month, is

A

0

B

20

C

40

D

80



Ques 26 Civil

During the chlorination process, aqueous (aq) chlorine reacts rapidly with water to form Cl-, HOCl, and H+ as shown below:
Cl2(aq) + H2O ⇋ HOCl + Cl- + H+
The most active disinfectant in the chlorination process from amongst the following is _______.

A

H+

B

HOCl

C

Cl-

D

H2O



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