Test: Hydrographs - 2 - Civil Engineering (CE) MCQ

# Test: Hydrographs - 2 - Civil Engineering (CE) MCQ

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## 10 Questions MCQ Test GATE Civil Engineering (CE) 2025 Mock Test Series - Test: Hydrographs - 2

Test: Hydrographs - 2 for Civil Engineering (CE) 2024 is part of GATE Civil Engineering (CE) 2025 Mock Test Series preparation. The Test: Hydrographs - 2 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Hydrographs - 2 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Hydrographs - 2 below.
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Test: Hydrographs - 2 - Question 1

### The recession limb of a flood hydrograph can be expressed with positive values of coefficients, as Qt/Q0 =

Detailed Solution for Test: Hydrographs - 2 - Question 1

Barnes showed that recession limp of a flood hydrograph can be expressed as,

where a = -In kr
kr is recession constant of value less than unity. Q0 and Qt are discharges at a time interval of t days with Q0 being the initial discharge.

Test: Hydrographs - 2 - Question 2

### For a given storm, other factors remaining same,

Detailed Solution for Test: Hydrographs - 2 - Question 2

The drainage density is defined as the ratio of the total channel length to the total drainage area. A large drainage density creates situation conductive for quick disposal of runoff drawn the channels.

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Test: Hydrographs - 2 - Question 3

### Base-flow separation is performed

Test: Hydrographs - 2 - Question 4

A unit hydrograph has

Test: Hydrographs - 2 - Question 5

The basic assumptions of the unit-hydrograph theory are

Test: Hydrographs - 2 - Question 6

The D-hour unit hydrograph of a catchment may be obtained by dividing the ordinates of a single peak Direct Runoff Hydrograph (DRH) due to a storm of D-hour duration by the

Test: Hydrographs - 2 - Question 7

A triangular DRH due to a storm has a time base of 80 hrs and a peak flow of 50 m3/s occurring at 20 hours from the start, if the catchment area is 144 km2, the rainfall excess in the storm was

Detailed Solution for Test: Hydrographs - 2 - Question 7

Test: Hydrographs - 2 - Question 8

A 12-hr unit hydrograph of a catchment is triangular in shape with a base width of 144 hours and a peak discharge value of 23 m3/s. This unit hydrograph refers to a catchment of area

Detailed Solution for Test: Hydrographs - 2 - Question 8

Unit hydrograph refers to 1 cm of rainfall excess
∴ Let area of catchment = A(km2)

Test: Hydrographs - 2 - Question 9

A 90 km2 catchment has a 4-h unit hydrograph which can be approximated as a triangle. If the peak ordinate of this unit hydrograph is 10m3/s the time base is

Detailed Solution for Test: Hydrographs - 2 - Question 9

Let the time base = B(hours)

Test: Hydrographs - 2 - Question 10

A triangular DRH due to a 6-h storm in a catchment has a time base of 100 h and a peak flow of 40 m3/s. The catchment area is 180 km2. The 6-h unit hydrograph of this catchment will have a peak flow in m3/s of

Detailed Solution for Test: Hydrographs - 2 - Question 10

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