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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Test  >  GATE 2027 Mock Test Series  >  Test: Flow Over Notches & Weirs - Civil Engineering (CE) MCQ

GATE Civil Engineering (CE) 2027 Test: Flow Over Notches & Weirs Free Online


MCQ Practice Test & Solutions: Test: Flow Over Notches & Weirs (7 Questions)

You can prepare effectively for Civil Engineering (CE) GATE Civil Engineering (CE) 2027 Mock Test Series with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Flow Over Notches & Weirs". These 7 questions have been designed by the experts with the latest curriculum of Civil Engineering (CE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 7

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Test: Flow Over Notches & Weirs - Question 1
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Consider the following measuring structures:
1. Submerged broad-crested weir
2. Free broad-crested weir
3. Free sharp-crested weir
4. Free ogee spillway

The correct sequence of the increasing order of the discharge coefficient of these structures is 

Detailed Solution: Question 1

For ogee spillway, Cd1 = 1.19 Cds
Cds is the discharge coefficient for sharp - crested weir. So 4 will come after 3.
The classification of weir is:

Further submerged weirs have lesser coefficient of discharge compared to free weirs. So, 2 will come after 1.

Test: Flow Over Notches & Weirs - Question 2
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Match List-I with List-ll and,select the correct answer using the codes given below the lists:
List-I
A. Rehbock formula
B. Francis formula
C. A special trapezoidal weir
D. Linear proportional weir

List-lI 
1. Sutroweir
2. Rectangular suppressed weir
3. Rectangular side-contracted weir
4. Cippolietti weir 

Detailed Solution: Question 2

(i) Rehbock’s formula is an empirical formula for calculating discharge in rectangular suppressed weir. It is given by,

Where L is the length of weir, H is head in meters and Z is the crest height in meters,
(ii) Francis’ formula is one of the commonly used empirical formula for computing the discharge over sharp or narrow crested weirs with or without end contraction. Francis proposed the following formulae for the discharge over rectangular weir.
(a) When the velocity of approach is not considered, 
Q = 1.84(L - 0.1 nH)H3/2

(b) With the velocity of approach is taken into account,

water surface above the crest of weir, and n is the number of end contractions.

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Test: Flow Over Notches & Weirs - Question 3
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The head over a V notch at the end of a channel is 75 cm. If an error of 0.15 cm is possible in the measurement of head, the percentage error. in computing the discharge will be

Detailed Solution: Question 3

Percentage error discharge over a 



Similarly percentage error in discharge in a rectangular weir

Test: Flow Over Notches & Weirs - Question 4
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A hemispherical tank of radius R has an orifice of cross - sectional area ‘a’ at its bottom and is full of liquid. The time required to empty the tank completely is

Test: Flow Over Notches & Weirs - Question 5
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A triangular notch is a more accurate measuring device than a rectangular notch

Test: Flow Over Notches & Weirs - Question 6
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The head over a 90° V notch weir is increased from 0.15 m to 0.30 m. The ratio of new discharge to the original discharge will be

Detailed Solution: Question 6

Test: Flow Over Notches & Weirs - Question 7
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The discharge through a Cipolletti weir is given by where symbols have their, usual meanings.

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About this Civil Engineering (CE) Practice Test

This test contains 7 MCQs on Flow Over Notches & Weirs with detailed solutions for each question. It is part of the GATE Civil Engineering (CE) 2027 Mock Test Series course on EduRev, designed to align with the current Civil Engineering (CE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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