Civil Engineering Gate Yearwise 

Civil Engineering GATE 2019 Set-1 Questions with Answer

Ques 1 Civil

Traffic on a highway is moving at a rate of 360 vehicles per hour at a location. If the number of vehicles arriving on this highway follows Poisson distribution, the probability (round off to 2 decimal places) that the headway between successive vehicles lies between 6 and 10 seconds is _______.


0.17 to 0.19 is the correct answer.


Ques 2 Civil

A parabolic vertical curve is being designed to join a road of grade +5% with a road of grade -3%. The length of the vertical curve is 400 m measured along the horizontal. The vertical point of curvature (VPC) is located on the road of grade +5%. The difference in height between VPC and vertical point of intersection (VPI) (in m, round off to the nearest integer) is _______.


10 to 10 or -10 to -10 is the correct answer.


Ques 3 Civil

Tie bars of 12 mm diameter are to be provided in a concrete pavement slab. The working tensile stress of the tie bars is 230 MPa, the average bond strength between a tie bar and concrete is 2 MPa, and the joint gap between the slabs is 10 mm. Ignoring the loss of bond and the tolerance factor, the design length of the tie bars (in mm, round off to the nearest integer) is _______.


700 to 700 is the correct answer.


Ques 4 Civil

The hyetograph of a storm event of duration 140 minutes is shown in the figure.

The infiltration capacity at the start of this event (t = 0) is 17 mm/hour, which linearly decreases to 10 mm/hour after 40 minutes duration. As the event progresses, the infiltration rate further drops down linearly to attain a value of 4 mm/hour at t = 100 minutes and remains constant thereafter till the end of the storm event. The value of the infiltration index, φ (in mm/hour, round off to 2 decimal places), is _______.


7.00 to 7.30 is the correct answer.


Ques 5 Civil

Two water reservoirs are connected by a siphon (running full) of total length 5000 m and diameter of 0.10 m, as shown below (figure not drawn to scale).

The inlet leg length of the siphon to its summit is 2000 m. The difference in the water surface levels of the two reservoirs is 5 m. Assume the permissible minimum absolute pressure at the summit of siphon to be 2.5 m of water when running full. Given: friction factor f = 0.02 throughout, atmospheric pressure = 10.3 m of water, and acceleration due to gravity g = 9.81 m/s2. Considering only major loss using Darcy-Weisbach equation, the maximum height of the summit of siphon from the water level of the upper reservoir, h (in m, round off to 1 decimal place) is _______.


5.7 to 5.9 is the correct answer.


Ques 6 Civil

Consider a laminar flow in the x-direction between two infinite parallel plates (Couette flow). The lower plate is stationary and the upper plate is moving with a velocity of 1 cm/s in the x-direction. The distance between the plates is 5 mm and the dynamic viscosity of the fluid is 0.01 N-s/m2. If the shear stress on the lower plate is zero, the pressure gradient, ∂p/∂x (in N/m2 per m, round off to 1 decimal place) is _______.


7.9 to 8.1 is the correct answer.


Ques 7 Civil

A reinforced concrete circular pile of 12 m length and 0.6 m diameter is embedded in stiff clay which has an undrained unit cohesion of 110 kN/m2. The adhesion factor is 0.5. The Net Ultimate Pullout (uplift) Load for the pile (in kN, round off to 1 decimal place) is _______.


1240.0 to 1250.0 is the correct answer.


Ques 8 Civil

A granular soil has a saturated unit weight of 20 kN/m3 and an effective angle of shearing resistance of 30°. The unit weight of water is 9.81 kN/m3. A slope is to be made on this soil deposit in which the seepage occurs parallel to the slope up to the free surface. Under this seepage condition for a factor of safety of 1.5, the safe slope angle (in degree, round off to 1 decimal place) would be _______.


10.8 to 11.3 is the correct answer.


Ques 9 Civil

A 3 m × 3 m square precast reinforced concrete segments to be installed by pushing them through an existing railway embankment for making an underpass as shown in the figure. A reaction arrangement using precast PCC blocks placed on the ground is to be made for the jacks.

At each stage, the jacks are required to apply a force of 1875 kN to push the segment. The jacks will react against the rigid steel plate placed against the reaction arrangement. The footprint area of reaction arrangement on natural ground is 37.5 m2. The unit weight of PCC block is 24 kN/m3. The properties of the natural ground are: c = 17 kPa, φ = 25° and γ = 18 kN/m3. Assuming that the reaction arrangement has rough interface and has the same properties that of soil, the factor of safety (round off to 1 decimal place) against shear failure is _______.


1.8 to 2.1 is the correct answer.


Ques 10 Civil

A square footing of 4 m side is placed at 1 m depth in a sand deposit. The dry unit weight (γ) of sand is 15 kN/m3. This footing has an ultimate bearing capacity of 600 kPa. Consider the depth factors: dq = dγ = 1.0 and the bearing capacity factor: Nγ = 18.75. This footing is placed at a depth of 2 m in the same soil deposit. For a factor of safety of 3.0 as per Terzaghi's theory, the safe bearing capacity (in kPa) of this footing would be _______.


240 to 240 or 250 to 250 or 270 to 270 is the correct answer.


Ques 11 Civil

The lecture was attended by quite _______ students, so the hall was not very _______.

A

a few, quite

B

few, quiet

C

a few, quiet

D

few, quite



Ques 12 Civil

They have come a long way in _______ trust among the users.

A

creating

B

created

C

creation

D

create



Ques 13 Civil

On a horizontal ground, the base of a straight ladder is 6 m away from the base of a vertical pole. The ladder makes an angle of 45° to the horizontal. If the ladder is resting at a point located at one-fifth of the height of the pole from the bottom, the height of the pole is _______ meters.

A

15

B

25

C

30

D

35



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