Civil Engineering GATE 2015 Set-2 Questions with Answer

Ques 14 Environmental Engineering

Ultimate BOD of a river water sample is 20 mg/L. BOD rate constant (natural log) is 0.15 day^-1. The respective values of BOD (in %) exerted and remaining after 7 days are:

Ques 15 Environmental Engineering

In a wastewater treatment plant, primary sedimentation tank (PST) designed at an overflow rate of 32.5 m³/day/m² is 32.5 m long, 8.0 m wide and liquid depth of 2.25 m. If the length of the weir is 75 m, the weir loading rate (in m³/day/m) is _______.

Ques 16 Fluid Mechanics

The relationship between the length scale ratio (L_r) and the velocity scale ratio (V_r) in hydraulic models, in which Froude dynamic similarity is maintained, is:

Ques 17 Fluid Mechanics

A nozzle is so shaped that the average flow velocity changes linearly from 1.5 m/s at the beginning to 15 m/s at its end in a distance of 0.375 m. The magnitude of the convective acceleration (in m/s²) at the end of the nozzle is _______.

Ques 18 Fluid Mechanics

A hydraulic jump takes place in a frictionless rectangular channel. The pre-jump depth is y_p. The alternate and sequent depths corresponding to y_p are y_a and y_s respectively. The correct relationship among y_p, y_a and y_s is:

Ques 19 Fluid Mechanics

A triangular gate with a base width of 2 m and a height of 1.5 m lies in a vertical plane. The top vertex of the gate is 1.5 m below the surface of a tank which contains oil of specific gravity 0.8. Considering the density of water and acceleration due to gravity to be 1000 kg/m³ and 9.81 m/s² respectively, the hydrostatic force (in kN) exerted by the oil on the gate is _______.

Ques 20 Fluid Mechanics

The velocity components of a two dimensional plane motion of a fluid are: u = (y³ / 3) + 2x - x²y and v = xy² - 2y - (x³ / 3). The correct statement is:

Ques 21 Fluid Mechanics

A pipe of 0.7 m diameter has a length of 6 km and connects two reservoirs A and B. The water level in reservoir A is at an elevation 30 m above the water level in reservoir B. Halfway along the pipe line, there is a branch through which water can be supplied to a third reservoir C. The friction factor of the pipe is 0.024. The quantity of water discharged into reservoir C is 0.15 m³/s. Considering the acceleration due to gravity as 9.81 m/s² and neglecting minor losses, the discharge (in m³/s) into the reservoir B is _______.

Ques 22 General Aptitude

Choose the most appropriate word from the options given below to complete the following sentence.
The official answered ______ that the complaints of the citizen would be looked into.

Ques 23 General Aptitude

Choose the statement where underlined word is used correctly.

Ques 24 General Aptitude

Which word is not a synonym for the word vernacular?

Ques 25 General Aptitude

Mr. Vivek walks 6 meters North-east, then turns and walks 6 meters South-east, both at 60 degrees to east. He further moves 2 meters South and 4 meters West. What is the straight distance in metres between the point he started from and the point he finally reached?

Ques 26 General Aptitude

Four cards are randomly selected from a pack of 52 cards. If the first two cards are kings, what is the probability that the third card is a king?