Civil Engineering GATE 2017 Set-2 Questions with Answer

Ques 40 Civil


A simply supported rectangular concrete beam of span 8 m has to be prestressed with a force of 1600 kN. The tendon is of parabolic profile having zero eccentricity at the supports. The beam has to carry an external uniformly distributed load of intensity 30 kN/m. Neglecting the self-weight of the beam, the maximum dip (in meters, up to two decimal places) of the tendon at the mid-span to balance the external load should be _______.


0.14 to 0.16 is the correct answer.


Ques 41 Civil


Two plates of 8 mm thickness each are connected by a fillet weld of 6 mm thickness as shown in the figure.

The permissible stresses in the plate and the weld are 150 MPa and 110 MPa, respectively. Assuming the length of the weld shown in the figure to be the effective length, the permissible load P (in kN) is _______.


59 to 61 is the correct answer.


Ques 42 Civil


Consider the portal frame shown in the figure and assume the modulus of elasticity, E = 2.5 × 104 MPa and the moment of inertia, I = 8 × 108 mm4 for all the members of the frame.

The rotation (in degrees, up to one decimal place) at the rigid joint Q would be _______.


0.9 to 1.1 is the correct answer.


Ques 43 Civil


A 2 m long, axially loaded mild steel rod of 8 mm diameter exhibits the load-displacement (P-δ) behavior as shown in the figure.

Assume the yield stress of steel as 250 MPa. The complementary strain energy (in N-mm) stored in the bar up to its linear elastic behavior will be _______.


mark to all is the correct answer.


Ques 44 Civil


Consider a square-shaped area ABCD on the ground with its centre at M as shown in the figure. Four concentrated vertical loads of P = 5000 kN are applied on this area, one at each corner.

The vertical stress increment (in kPa, up to one decimal place) due to these loads according to the Boussinesq's equation, at a point 5 m right below M, is _______.


187.0 to 192.0 is the correct answer.


Ques 45 Civil


The figure shows a U-tube having a 5 mm × 5 mm square cross-section filled with mercury (specific gravity = 13.6) up to a height of 20 cm in each limb (open to the atmosphere).

If 5 cm3 of water is added to the right limb, the new height (in cm, up to two decimal places) of mercury in the LEFT limb will be _______.


20.70 to 20.76 is the correct answer.


Ques 46 Civil


A 1 m wide rectangular channel carries a discharge of 2 m3/s. The specific energy-depth diagram is prepared for the channel. It is observed in this diagram that corresponding to a particular specific energy, the subcritical depth is twice the supercritical depth. The subcritical depth (in meters, up to two decimal places) is equal to _______.


1.06 to 1.08 is the correct answer.


Ques 47 Civil


A catchment is idealized as a 25 km × 25 km square. It has five rain gauges, one at each corner and one at the center, as shown in the figure.

During a month, the precipitation at these gauges is measured as G1 = 300 mm, G2 = 285 mm, G3 = 272 mm, G4 = 290 mm, and G5 = 288 mm. The average precipitation (in mm, up to one decimal place) over the catchment during this month by using the Thiessen polygon method is _______.


286.9 to 287.9 is the correct answer.


Ques 48 Civil


The culturable command area of a canal is 10,000 ha. The area grows only two crops - rice in the Kharif season and wheat in the Rabi season. The design discharge of the canal is based on the rice requirements, which has an irrigated area of 2500 ha, base period of 150 days and delta of 130 cm. The maximum permissible irrigated area (in ha) for wheat, with a base period of 120 days and delta of 50 cm, is _______.


5150 to 5250 is the correct answer.


Ques 49 Civil


Water is pumped at a steady uniform flow rate of 0.01 m3/s through a horizontal smooth circular pipe of 100 mm diameter. Given that the Reynolds number is 800 and g = 9.81 m/s2, the head loss (in meters, up to one decimal place) per km length due to friction would be _______.


65.0 to 69.0 is the correct answer.


Ques 50 Civil


The composition of a municipal solid waste sample is given below:

The difference between the energy content of the waste sample calculated on dry basis and as-discarded basis (in kJ/kg) would be _______.


3850 to 3900 is the correct answer.


Ques 51 Civil


For a given water sample, the ratio between BOD5-day, 20 °C and the ultimate BOD is 0.68. The value of the reaction rate constant k (on base e) (in day-1, up to two decimal places) is _______.


0.22 to 0.24 is the correct answer.


Ques 52 Civil


A municipal corporation is required to treat 1000 m3/day of water. It is found that an overflow rate of 20 m/day will produce a satisfactory removal of the discrete suspended particles at a depth of 3 m. The diameter (in meters, rounded to the nearest integer) of a circular settling tank designed for the removal of these particles would be _______.


8 to 8 is the correct answer.


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