Fluid Mechanics Multiple Choice Questions 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
Answer: b
Clarification: 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
Answer: b
Clarification: The weir is a permanent masonry structure made up of concrete.
3. The notch is bigger in size than wier.
a) True
b) False
Answer: b
Clarification: The weir is bigger in size than notch.
4. The MoM (Material of Manufacture) of notch is,
a) Thermoplastic
b) Metals
c) Fibre
d) Wood
Answer: b
Clarification: 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
Answer: d
Clarification: There is no such way of classification.
6. The nature of discharge is also a way of classifying notches.
a) True
b) False
Answer: b
Clarification: 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
Answer: b
Clarification: Circular notch is not a way of classifying based on the shape of opening.
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
Answer: a
Clarification: 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
Answer: d
Clarification: Trapezoidal crested weir is not the way of classifying weir based on their shape of crest.
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
Answer: c
Clarification: This is not the way of classifying weir based on the emerging nappe.