Civil Engineering GATE 2020 Set-2 Questions with Answer

Ques 14 Civil


The following partial differential equation is defined for

. The set of auxiliary conditions necessary to solve the equation uniquely, is

A

three initial conditions

B

three boundary conditions

C

two initial conditions and one boundary condition

D

one initial condition and two boundary conditions



Ques 15 Civil


The ratio of the plastic moment capacity of a beam section to its yield moment capacity is termed as

A

aspect ratio

B

load factor

C

shape factor

D

slenderness ratio



Ques 16 Civil


The state of stress represented by Mohr's circle shown in the figure is

A

uniaxial tension

B

biaxial tension of equal magnitude

C

hydrostatic stress

D

pure shear



Ques 17 Civil


A weightless cantilever beam of span L is loaded as shown in the figure.

For the entire span of the beam, the material properties are identical and the cross section is rectangular with constant width. From the flexure-critical perspective, the most economical longitudinal profile of the beam to carry the given loads amongst the options given below, is

A

B

C

D



Ques 18 Civil


As per IS 456:2000, the pH value of water for concrete mix shall NOT be less than

A

4.5

B

5.0

C

5.5

D

6.0



Ques 19 Civil


The traffic starts discharging from an approach at an intersection with the signal turning green. The constant headway considered from the fourth or fifth headway position is referred to as

A

discharge headway

B

effective headway

C

intersection headway

D

saturation headway



Ques 20 Civil


Soil deposit formed due to transportation by wind is termed as

A

aeolian deposit

B

alluvial deposit

C

estuarine deposit

D

lacustrine deposit



Ques 21 Civil


A sample of 500 g dry sand, when poured into a 2 litre capacity cylinder which is partially filled with water, displaces 188 cm3 of water. The density of water is 1 g/cm3. The specific gravity of the sand is

A

2.72

B

2.66

C

2.55

D

2.52



Ques 22 Civil


Muskingum method is used in

A

hydrologic reservoir routing

B

hydrologic channel routing

C

hydraulic channel routing

D

hydraulic reservoir routing



Ques 23 Civil


Superpassage is a canal cross-drainage structure in which

A

natural stream water flows with free surface below a canal

B

natural stream water flows under pressure below a canal

C

canal water flows with free surface below a natural stream

D

canal water flows under pressure below a natural stream



Ques 24 Civil


A triangular direct runoff hydrograph due to a storm has a time base of 90 hours. The peak flow of 60 m3/s occurs at 20 hours from the start of the storm. The area of catchment is 300 km2. The rainfall excess of the storm (in cm), is

A

2.00

B

3.24

C

5.40

D

6.48



Ques 25 Civil


The velocity components in the x and y directions for an incompressible flow are given as u = (-5 + 6x) and v = -(9 + 6y), respectively. The equation of the streamline is

A

(-5 + 6x) - (9 + 6y) = constant

B

(-5 + 6x) / (9 + 6y) = constant

C

(-5 + 6x)(9 + 6y) = constant

D

(9 + 6y) / (-5 + 6x) = constant



Ques 26 Civil


The relationship between oxygen consumption and equivalent biodegradable organic removal (i.e., BOD) in a closed container with respect to time is shown in the figure.

Assume that the rate of oxygen consumption is directly proportional to the amount of degradable organic matter and is expressed as dLt/dt = -kLt, where Lt (in mg/litre) is the oxygen equivalent of the organics remaining at time t and k (in d-1) is the degradation rate constant. L0 is the oxygen equivalent of organic matter at time, t = 0. In the above context, the correct expression is

A

BOD5 = L5

B

BODt = L0 - Lt

C

L0 = Lte-kt

D

Lt = L0(1 - e-kt)



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