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National Champion Test: Hydrology & Irrigation (App update required to attempt this test)

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Question 1

Kirpich equation is used to determine which one of the following?

Question 2

The normal annual rainfall at stations A, B, C and D in a basin are 80, 90, 100 and 70 cm respectively. In the year 1975, the station D was inoperative and the stations A, B and C recorded annual precipitations of 90, 75 and 80 cm respectively. Estimate the rainfall (in cm) at station D in that year

Question 3

What is the normal regime scour depth for a channel in soil with silt factor of 1.25 and carrying 8.4 m²/sec of discharge intensity as per the Lacey’s regime theory?

Question 4

By experiment, it is obtained that electrical conductivity of leached water and irrigation water is 20m mho/cm and 2.5m mho/cm respectively. Then the leaching requirement of soil is

Question 5

Return Period Refers to

Question 6

A catchment area of 60 ha has a runoff coefficient of 0.40. if a strom of intensity 3 cm/h and duration longer than the time of concentration occurs in the catchment, then what is peak discharge?

Question 7

A DRH due to a strom over a basin has a time base of 90 hours with straight line portions of the hydrograph with flow rates of 0, 10, 70, 90, 40, and 0 m³/s at elapsed durations of 0, 10, 20, 30, 50 and 90 hours as indicated on the above diagram, respectively. The catchment area is 300 km². what is the rainfall excess in the storm?

Question 8

If the slope of infiltration capacity curve as shown in figure is -0.4605, the value of the constant k (i.e the rate of decay of the difference between initial and final infiltration rate) in the Horton's equation of infiltration capacity curve will be equal to _______time^-1.

Question 9

The flood is to be routed through a river reach using muskingham method of flood routing. The muskingham constant K is 36hr and weightage factor x is 0.10.The time interval taken to calculate inflow is 12hr. What is the value of muskingham routing coefficient , C₂ (upto four decimal place) ?

Question 10

A standard triangular lined canal section 1.5H:1V side slope has a capacity of 25 cumec and full supply depth of 2.4m. The lining material for the canal would be safe for withstanding mean velocity of

Question 11

Match the following :
Group–I
P Rainfall intensity
Q Rainfall excess
R Rainfall averaging
S Mass curve
Group–II
1. Isohyets
2. Cumulative rainfall
3. Hyetograph
4. Direct runoff hydrograph
Codes :
P Q R S

Question 12

The time required to irrigate a strip of area 0.203 hectare by a stream discharge of 0.043 cumecs, to provide an average depth of 6.35 cm to the field is __________min.
[Assume average rate of infiltration to be 5 cm/h]

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ESE & GATE CE Engineering Hydrology Irrigation Engineering

Jun 21ESE & GATE CE