Civil Engineering Gate Yearwise 

Civil Engineering Gate 2018 Set-1 Questions with Answer

Ques 14 GATE 2018 SET-1

A column of height h with a rectangular cross-section of size a × 2a has a buckling load of P. If the cross-section is changed to 0.5a × 3a and its height changed to 1.5h, the buckling load of the redesigned column will be

A

P/12

B

P/4

C

P/2

D

3P/4


(a) is the correct answer.

Ques 15 GATE 2018 SET-1

A steel column of ISHB 350 @ 72.4 kg/m is subjected to a factored axial compressive load of 2000 kN. The load is transferred to a concrete pedestal of grade M20 through a square base plate. Consider bearing strength of concrete as 0.45fck, where fck is the characteristic strength of concrete. Using limit state method and neglecting the self weight of base plate and steel column, the length of a side of the base plate to be provided is

A

39 cm

B

42 cm

C

45 cm

D

48 cm


(d) is the correct answer.

Ques 16 GATE 2018 SET-1

The Le Chatelier apparatus is used to determine

A

compressive strength of cement

B

fineness of cement

C

setting time of cement

D

soundness of cement


(d) is the correct answer.

Ques 17 GATE 2018 SET-1

The deformation in concrete due to sustained loading is

A

creep

B

hydration

C

segregation

D

shrinkage


(a) is the correct answer.

Ques 18 GATE 2018 SET-1

A solid circular beam with a radius of 0.25 m and a length of 2 m is subjected to a twisting moment of 20 kN·m about the z-axis at the free end, which is the only load acting, as shown in the figure.

The shear stress component τxy at Point 'M' in the cross-section of the beam at a distance of 1 m from the fixed end is:

A

0.0 MPa

B

0.51 MPa

C

0.815 MPa

D

2.0 MPa


(a) is the correct answer.

Ques 19 GATE 2018 SET-1

Two rectangular under-reinforced concrete beam sections X and Y are similar in all aspects except that the longitudinal compression reinforcement in section Y is 10% more. Which one of the following is the correct statement?

A

Section X has less flexural strength and is less ductile than section Y

B

Section X has less flexural strength but is more ductile than section Y

C

Sections X and Y have equal flexural strength but different ductility

D

Sections X and Y have equal flexural strength and ductility


(a) is the correct answer.

Ques 20 GATE 2018 SET-1

The percent reduction in the bearing capacity of a strip footing resting on sand under flooding condition (water level at the base of the footing) when compared to the situation where the water level is at a depth much greater than the width of footing, is approximately

A

0

B

25

C

50

D

100


(c) is the correct answer.

Ques 21 GATE 2018 SET-1

The width of a square footing and the diameter of a circular footing are equal. If both the footings are placed on the surface of sandy soil, the ratio of the ultimate bearing capacity of circular footing to that of square footing will be

A

4/3

B

1

C

3/4

D

2/3


(c) is the correct answer.

Ques 22 GATE 2018 SET-1

Bernoulli's equation is applicable for

A

viscous and compressible fluid flow

B

inviscid and compressible fluid flow

C

inviscid and incompressible fluid flow

D

viscous and incompressible fluid flow


(c) is the correct answer.

Ques 23 GATE 2018 SET-1

There are 20,000 vehicles operating in a city with an average annual travel of 12,000 km per vehicle. The NOx emission rate is 2.0 g/km per vehicle. The total annual release of NOx will be

A

4,80,000 kg

B

4,800 kg

C

480 kg

D

48 kg


(a) is the correct answer.

Ques 24 GATE 2018 SET-1

A bitumen sample has been graded as VG30 as per IS: 73-2013. The '30' in the grade means that

A

penetration of bitumen at 25 °C is between 20 and 40

B

viscosity of bitumen at 60 °C is between 2400 and 3600 Poise

C

ductility of bitumen at 27 °C is more than 30 cm

D

elastic recovery of bitumen at 15 °C is more than 30%


(b) is the correct answer.

Ques 25 GATE 2018 SET-1

The speed-density relationship for a road section is shown in the figure.

The shape of the flow-density relationship is

A

piecewise linear

B

parabolic

C

initially linear then parabolic

D

initially parabolic then linear


(c) is the correct answer.

Ques 26 GATE 2018 SET-1

A well-designed signalized intersection is one in which the

A

crossing conflicts are increased

B

total delay is minimized

C

cycle time is equal to the sum of red and green times in all phases

D

cycle time is equal to the sum of red and yellow times in all phases


(b) is the correct answer.

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