Test: Abstractions From Precipitation - 1 - Civil Engineering (CE) MCQ

# Test: Abstractions From Precipitation - 1 - Civil Engineering (CE) MCQ

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## 10 Questions MCQ Test GATE Civil Engineering (CE) 2025 Mock Test Series - Test: Abstractions From Precipitation - 1

Test: Abstractions From Precipitation - 1 for Civil Engineering (CE) 2024 is part of GATE Civil Engineering (CE) 2025 Mock Test Series preparation. The Test: Abstractions From Precipitation - 1 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Abstractions From Precipitation - 1 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Abstractions From Precipitation - 1 below.
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Test: Abstractions From Precipitation - 1 - Question 1

### If ewand ea are the saturated vapour pressures of the water surface and air respectively, the Dalton’s law for evaporation EL in unit time is given by EL =

Detailed Solution for Test: Abstractions From Precipitation - 1 - Question 1

The rate of evaporation is proportional to the difference between the saturation vapour pressure at the water temperature, ew and the actual vapour pressure in the air, ea . Thus,

where,EL = rate of evaporation (mm/day) C = a constant
ew and ea are in mm of mercury

Test: Abstractions From Precipitation - 1 - Question 2

### The average pan coefficient for the standard US Weather Bureau class A pan is

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Test: Abstractions From Precipitation - 1 - Question 3

### A canal is 80 km long and has an average surface width of 15 m. If the evaporation measured in a class A pan is 0.5 cm/day, the volume of water evaporated in a month of 30 days is (in m3)  : -

Detailed Solution for Test: Abstractions From Precipitation - 1 - Question 3

Volume of water evaporated in a day

Pan constant for class A pan = 0.7
∴ Volume of water evaporated in a month

Test: Abstractions From Precipitation - 1 - Question 4

The ISI standard pan evaporimeter is

Detailed Solution for Test: Abstractions From Precipitation - 1 - Question 4

An ISI standard pan evaporimeter has about 14% less evaporation than a US class A pan.

Test: Abstractions From Precipitation - 1 - Question 5

The chemical that is found to be most suitable as water evaporation inhibitor is

Test: Abstractions From Precipitation - 1 - Question 6

Wind speed is measured with

Test: Abstractions From Precipitation - 1 - Question 7

Evapotranspiration is confined to

Detailed Solution for Test: Abstractions From Precipitation - 1 - Question 7

Transpiration is essentially confined to day light hours and rate of transpiration depends upon the growth period of the plant. Evaporation on the other hand, continues all through the day and night although the rates are different.

Test: Abstractions From Precipitation - 1 - Question 8

Interception losses

Detailed Solution for Test: Abstractions From Precipitation - 1 - Question 8

A part of rain may be caught by vegetation and subsequently evaporated. The volume of water so caught is called interception. Interception loss is solely due to evaporation and does not include transpiration, through fall or stemflow.

Test: Abstractions From Precipitation - 1 - Question 9

The rainfall on three successive 6-h periods are 1.3, 4.6 and 3.1 cm. If the initial loss is 0.7 cm and the surface runoff resulting from this storm is 3 cm, the φ-index for the storm is

Detailed Solution for Test: Abstractions From Precipitation - 1 - Question 9

Test: Abstractions From Precipitation - 1 - Question 10

If for a given basin in a given period, P - precipitation, E = evapotranspiration R = total runoff and ΔS - increase in the storage of water in the basin, the hydrological water budget equation states

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## GATE Civil Engineering (CE) 2025 Mock Test Series

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