Test: Hydrographs - 3

# Test: Hydrographs - 3

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## 10 Questions MCQ Test GATE Civil Engineering (CE) 2023 Mock Test Series | Test: Hydrographs - 3

Test: Hydrographs - 3 for Civil Engineering (CE) 2022 is part of GATE Civil Engineering (CE) 2023 Mock Test Series preparation. The Test: Hydrographs - 3 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Hydrographs - 3 MCQs are made for Civil Engineering (CE) 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Hydrographs - 3 below.
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Test: Hydrographs - 3 - Question 1

### In an S-curve derived by a unit hydrograph U of D-h duration

Test: Hydrographs - 3 - Question 2

### A 4 hour unit hydrograph of a basin with area of 1728 km2 can be approximated as a triangle with base period of 48 hours. The peak ordinate of hydrograph is

Detailed Solution for Test: Hydrographs - 3 - Question 2

Test: Hydrographs - 3 - Question 3

### An instantaneous unit hydrograph is a direct runoff hydrograph

Detailed Solution for Test: Hydrographs - 3 - Question 3

A finite unit hydrograph is indicated as the duration D → 0. The limiting case of a unit hydrograph of zero duration is known as Instantaneous Unit Hydrograph (IUH).

Test: Hydrographs - 3 - Question 4

The shape of the recession limb of a hydrograph depends on

Detailed Solution for Test: Hydrographs - 3 - Question 4

The climatic factors control the rising iimb and the recession limb is independent of storm characteristics, being determined by catchment characteristics only.

Test: Hydrographs - 3 - Question 5

Instantaneous unit hydrograph is a hydrograph of

Test: Hydrographs - 3 - Question 6

In Synder’s method of synthetic unit hydrograph development, basin lag is taken as

Detailed Solution for Test: Hydrographs - 3 - Question 6

The most important characteristic of a basin affecting a hydrograph due to a given storm is basin lag. Basin lag is the time difference between the centroids of the input (rainfall excess) and the output (surface runoff).

Test: Hydrographs - 3 - Question 7

The ordinate of the IUH of a catchment at any time t is the

Test: Hydrographs - 3 - Question 8

If a 4-hour unit hydrograph of a certain basin has a peak ordinate of 80 m3/s, the peak ordinate of a 2-hour unit hydrograph for the same basin will be

Detailed Solution for Test: Hydrographs - 3 - Question 8

With the reduction of unit hydrograph duration, 1 cm excess rainfall will occur in reduced period. So peak ordinate of UH will increase and time base will decrease. Thus the peak ordinate of 2 hr UH will be greater than 80 m3/s.

Test: Hydrographs - 3 - Question 9

The point of inflection on the recession limb of a hydrograph represents

Detailed Solution for Test: Hydrographs - 3 - Question 9

The starting point of the recession limb, i.e., the point of inflection represents the condition of maximum storage.

Test: Hydrographs - 3 - Question 10

A flood-hydrograph due to an isolated storm consists of

Detailed Solution for Test: Hydrographs - 3 - Question 10

The hydrograph is the response of a given catchment to a rainfall implicit. It consists of flow in all the three phases of runoff, viz. surface runoff, interflow and base flow.

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## GATE Civil Engineering (CE) 2023 Mock Test Series

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