Civil Engineering GATE 2019 Set-1 Questions with Answer

Ques 40 Civil

A completely mixed dilute suspension of sand particles having diameters 0.25, 0.35, 0.40, 0.45 and 0.50 mm are filled in a transparent glass column of diameter 10 cm and height 2.50 m. The suspension is allowed to settle without any disturbance. It is observed that all particles of diameter 0.35 mm settle to the bottom of the column in 30 s. For the same period of 30 s, the percentage removal (round off to integer value) of particles of diameters 0.45 and 0.50 mm from the suspension is _______.

Ques 41 Civil

The maximum number of vehicles observed in any five minute period during the peak hour is 160. If the total flow in the peak hour is 1000 vehicles, the five minute peak hour factor (round off to 2 decimal places) is _______.

Ques 42 Civil

A circular duct carrying water gradually contracts from a diameter of 30 cm to 15 cm. The figure (not drawn to scale) shows the arrangement of differential manometer attached to the duct.

Ques 43 Civil

The probability that the annual maximum flood discharge will exceed 25000 m³/s, at least once in next 5 years is found to be 0.25.
The return period of this flood event (in years, round off to 1 decimal place) is _______.

Ques 44 Civil

A soil has a specific gravity of its solids equal to 2.65. The mass density of water is 1000 kg/m³.
Considering zero air voids and 10% moisture content of the soil sample, the dry density (in kg/m³, round off to 1 decimal place) would be _______.

Ques 45 Civil

A concentrated load of 500 kN is applied on an elastic half space. The ratio of the increase in vertical normal stress at depths of 2 m and 4 m along the point of the loading, as per Boussinesq's theory, would be _______.

Ques 46 Civil

Which one of the following is NOT a correct statement?

Ques 47 Civil

A one-dimensional domain is discretized into N sub-domains of width Δx with node numbers i = 0, 1, 2, 3,..., N. If the time scale is discretized in steps of Δt, the forward-time and centered-space finite difference approximation at ith node and nth time step, for the partial differential equation ∂v/∂t = β(∂2v/∂x2) is

Ques 48 Civil

A rectangular open channel has a width of 5 m and a bed slope of 0.001. For a uniform flow of depth 2 m, the velocity is 2 m/s. The Manning's roughness coefficient for the channel is

Ques 49 Civil

For the following statements:
P. The lateral stress in the soil while being tested in an oedometer is always at-rest.
Q. For a perfectly rigid strip footing at deeper depths in a sand deposit, the vertical normal contact stress at the footing edge is greater than that at its centre.
R. The corrections for overburden pressure and dilatancy are not applied to measured SPT-N values in case of clay deposits. The correct combination of the statements is

Ques 50 Civil

Consider two functions: x = ψ ln φ and y = φ ln ψ. Which one of the following is the correct expression for ∂ψ/∂x?

Ques 51 Civil

The cross-section of a built-up wooden beam as shown in the figure (not drawn to scale) is subjected to a vertical shear force of 8 kN. The beam is symmetrical about the neutral axis (N.A.) shown, and the moment of inertia about N.A. is 1.5 × 10⁹ mm⁴. Considering that the nails at the location P are spaced longitudinally (along the length of the beam) at 60 mm, each of the nails at P will be subjected to the shear force of

Ques 52 Civil

The rigid-jointed plane frame QRS shown in the figure is subjected to a load P at the joint R. Let the axial deformations in the frame be neglected. If the support S undergoes a settlement of Δ = P L³ / βEI, the vertical reaction at the support S will become zero when β is equal to