Fluid Mechanics Questions and Answers – Classification of Notches and Weirs

This set of Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on “Classification of Notches and Weirs”.

1. A notch is a device used to measure the turbulence of the flowing liquid directly.
a) True
b) False
View Answer

Answer: b
Explanation: A notch is a device used to measure the flow rate of the flowing liquid, directly.

2. The weir is an attachable structure made up of thermoplastic.
a) True
b) False
View Answer

Answer: b
Explanation: The weir is a permanent masonry structure made up of concrete.

3. The notch is bigger in size than wier.
a) True
b) False
View Answer

Answer: b
Explanation: The weir is bigger in size than notch.
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4. The MoM (Material of Manufacture) of notch is,
a) Thermoplastic
b) Metals
c) Fibre
d) Wood
View Answer

Answer: b
Explanation: The MoM (Material of Manufacture) of notch is Metals.

5. Which of the following is not a way of classifying notches or weirs?
a) Based on the shape of opening
b) Based on the effect of the sides on the nappe
c) Based on the shape of the crest
d) Based on the effect of the sides on the crest
View Answer

Answer: d
Explanation: There is no such way of classification.
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6. The nature of discharge is also a way of classifying notches.
a) True
b) False
View Answer

Answer: b
Explanation: The nature of discharge is also a way of classifying notches.

7. Which of the following is not a way of classifying based on the shape of opening?
a) Rectangular notch
b) Circular notch
c) Trapezoidal notch
d) Stepped notch
View Answer

Answer: b
Explanation: Circular notch is not a way of classifying based on the shape of opening.
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8. Trapezoidal weir has another popular name. What is it?
a) Cipolletti weir
b) Hagen Poiseuille’s weir
c) Reynold’s weir
d) Euler’s weir
View Answer

Answer: a
Explanation: Trapezoidal weir is also called Cipolletti weir.

9. What is not the way of classifying weir based on their shape of crest?
a) Sharp crested weir
b) Broad crested weir
c) Narrow crested weir
d) Trapezoidal crested weir
View Answer

Answer: d
Explanation: Trapezoidal crested weir is not the way of classifying weir based on their shape of crest.
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10. What is not the way of classifying weir based on the emerging nappe?
a) Weir with end contraction
b) Weir without end contraction
c) Weir contraction at the beginning
d) Weir with absence of end contraction
View Answer

Answer: c
Explanation: This is not the way of classifying weir based on the emerging nappe.

Sanfoundry Global Education & Learning Series – Fluid Mechanics.

To practice all areas of Fluid Mechanics, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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