Time Left - 30:00 mins

GATE 2020 CE Revision Test 1 (App update required to attempt this test)

Attempt now to get your rank among 439 students!

Question 1

An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph. The peak flow of the inflow hydrograph is P_I and the time of occurrence of the peak is t_I. The peak flow of the outflow hydrograph is P₀ and the time of occurance of the peak is t₀. Which one of the following statements is correct?

Question 2

The total irrigation depth of water, required by a certain crop in its entire growing period (150 days), is 25.92 cm. The culturable command area for a distributary channel is 100,000 hetares. The distributary channel shall be designed for a discharge

Question 3

Match the following
Group 1
P. Release valve
Q. Check valve
R. Gate valve
S. Pitot valve
Group 2
(1). Reduce high inlet pressure to lower outlet pressure
(2). Limit the flow of water to single direction
(3). Remove air from the pipeline
(4). Stopping the flow of water in the pipeline

Question 4

For a rectangular channel section. Group I lists geometrical elements and Group II gives proportions for hydraulically efficient section
Group I
P. Top width
Q. Perimeter
R. Hydraulic Radius
S. Hydraulic Depth

Group–II
1. y_e/2
2. y_e
3. 2y_e
4. 4 y_e
y_e is the flow depth corresponding to hydraulically efficient section. The correct match of group I with group II is

Question 5

A convective precipitation is

Question 6

The ordinates, u of a 2-hour unit hydrograph (i.e. for 1 cm of effective rain), for a catchment are shown in the table.

A 6-hour storm occurs over the catchment such that the effective rainfall intensity is 1 cm/hour for the first two hours, zero for the next two hours, and 0.5 cm/hour for the last two hours. If the base flow is constant at 5 m³/s, the peak flow due to this storm (in m³/s, round off to 1 decimal place) will be ________

Question 7

A steep wide rectangular channel takes off from a reservoir having an elevation of 101.2 m. At the entrance, the bottom elevation of the channel is 100 m. If the slope of the channel is increased by 4%, the discharge per unit length in the channel will be

Question 8

The infiltration rate

in a basin under ponding condition is given by

where,

is in mm/h and

is time in hour. Total depth of infiltration (in mm, up to one decimal place) during the last 20 minutes of a storm of 30 minutes duration is _________

Question 9

A fire protection system is supplied from water lower with a bent pipe as shown in the figure. The pipe friction f is 0.03. Ignoring all minor losses, the maximum discharge, Q , in the pipe is
$Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\Civil Engg\Civil Engineeing-04-Apr\Civil-Engineering-2004_files\image227.jpg$

Question 10

The culturable commanded area for a distributary is 2 x 10⁸ m². The intensity of irrigation for a crop is 40%. If k or water depth and k or period for the crop are 14cm and 4 weeks, respectively, the peak demand discharge is

Question 11

A reservoir had an average surface area of 20 km² during June 2014. In that month, the average rate of inflow was 10 m3/s, the outflow was 15 m3/s, monthly rainfall was 10 cm and reduction in storage was 16 Mm3. Assuming the seepage losses to be 1.8 cm, estimate the evaporation in that month in cm.

Question 12

A horizontal nozzle of 30 mm diameter discharges a steady jet of water into the atmosphere at a rate of 15 liters per second. The diameter of inlet to the nozzle is 100 mm. The jet Impinges normal to a flat stationary plate held close to the nozzle end. Neglecting air friction and considering the density of water as 1000 kg/m³, force exerted by the jet (in N) on the plate is _______

Question 13

A 2 km long pipe of 0.2 m diameter connects two reservoirs. The difference between water levels in the reservoirs is 8m. The Darcy–Weisbach friction factor of the pipe if 0.04. Accounting for frictional, entry and exit losses, the velocity in the pipe (in m/s) is:

Question 14

The velocity field for flow is given by
$Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\Civil Engg\Civil Engineeing-01-Apr\Civil-Engineering-2006-01-Apr-1_files\image225.png$
and the density varies as p = p₀ exp (-2t). In order that the mass is conserved, the value of

λ should be

Question 15

If a small concrete cube is submerged deep in still water in such a way that the pressure exerted on all faces of the cube is p, then the maximum shear stress developed inside the cube is

439 attempts
3 upvotes
3 comments

Tags :

ESE & GATE CE General

Aug 22ESE & GATE CE