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GATE 2019 Revision Test 1 (Hydro+Irrigation+FM) (App update required to attempt this test)

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Question 1

What is the risk involved (in%) in the design of culvert having a useful life of 20 years, when it is designed for a flood frequency of 100 years?

Question 2

A tile drainage system draining 12 ha flows at the design capacity for two days in response to a storm. If the system is designed with a drainage coefficient of 1.25 cm/day, then the amount of water removed from the drainage area during two days is _________m³.

Question 3

The field capacity and permanent wilting point for a given 80 cm root zone are 35 and 10 percent respectively at a given time. The soil moisture in the given soil is 20 percent when a farmer irrigates the soil with 250 mm depth of water. Assuming dry specific gravity of soil as 1.6,then the percentage amount of water wasted from the consideration of irrigation is

Question 4

A pipeline 200mm in diameter and 2700 m long is used to pump up 40kg/sec of an oil whose density and dynamic viscosity are 900kg/m³ and 0.162Ns/m². Calculate the distance between HGL and TEL.

Question 5

Is the statement given below is true or false:
If a boat, built with sheet metal on wooden frame, has an average density which is greater than that of water, then the boat can float in water with its hollow face upward but will sink once it overturns?

Question 6

The ordinates of a 20h unit hydrograph at 1 hour intervals starting from time t = 0, are 0, 3, 8, 6, 3, 2, and 0 m³/s. Use trapezoidal rule for numerical integration, if required

What is the catchment area represented by the unit hydrograph?

Question 7

The ordinates of a 20h unit hydrograph at 1 hour intervals starting from time t = 0, are 0, 3, 8, 6, 3, 2, and 0 m³/s. Use trapezoidal rule for numerical integration, if required

A storm of 6.6 cm occurs uniformly over the catchment in 3 hours. If Φ–index is equal to 2 mm/h and base flow is 5 m³/s, what is the peak flow due to the storm?

Question 8

A check basin of size 13 m x 12 m is to be irrigated using a stream of 26 l/s. The depth of crop root zone is 1.3 m and the apparent specific gravity of the root zone soil is 1.6. The water holding capacity of soil is 16%. Irrigation water is to be applied when soil moisture content of the crop root zone attains 12%. Deep percolation loss is neglected. The net irrigation requirement (in mm) and the duration of irrigation (in minutes) to replenish the water depth up to field capacity are respectively

Question 9

The analysis of maximum daily rainfall on a city indicated that a depth of 280 mm has a return period 50 years. The probability of a one day rainfall depth equal to or greater than 280 mm in the city occurring two times in 15 successive years is

Question 10

An isolated 4-hour storm occurred over a catchment as follows

The φ index for the catchment is l0mm/h. The estimated runoff depth from the catchment due to the above storm is_____mm.

Question 11

A water course commands an irrigated area of 800 hectares. The intensity of irrigation of rice this area is 55%. The transplantation of tice takes 12 days and total depth of water required by the crop is 45 cm on the field during the transplantation period. During the transplantation period, the useful rain falling on the field is 10 cm, then the discharge required in the water course, if losses of water is to be 20% in the water course, is _______cumec.

Question 12

Two tanks, which are connected by three pipes in series of lengths 310m, 180m and 220m and of diameters 300mm, 200mm and 400mm respectively, have difference of 12m in their water surface levels. Determine the rate of flow of water if co-efficient of friction is 0.020, 0.0208 and 0.0192 respectively. Neglect all minor losses.

Question 13

If the free stream velocity is 3m/s and has a kinematic viscosity of 1.5 × 10^-5 m²/s. the boundary layer thickness at 1m is_____m.

Question 14

The barometer reads 740 mm of Hg, what would be the absolute pressure? Let intensity of pressure be 30 kPa and take specific gravity of mercury = 13.6

Question 15

A 400 m long horizontal pipe is to deliver 1000 kg of oil (s = 0.9, ν = 0.0002 m2/s) per 60 seconds. If the head loss is not to exceed 800 cm of oil, the pipe diameter is _____ m.
[Friction factor for laminar flow : f = 64/Re]

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ESE & GATE CE General

Nov 27ESE & GATE CE