Orifices,Notches and Weirs MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Orifices,Notches and Weirs, a fundamental topic in the field of Fluid Mechanics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Orifices,Notches and Weirs MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Orifices,Notches and Weirs mcq questions that explore various aspects of Orifices,Notches and Weirs problems. Each MCQ is crafted to challenge your understanding of Orifices,Notches and Weirs principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Fluid Mechanics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Orifices,Notches and Weirs MCQs are your pathway to success in mastering this essential Fluid Mechanics topic.

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Orifices,Notches and Weirs MCQs | Page 4 of 5

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Q31.
What is the reduction in crest length due to each end contraction?

a.

0.1H

b.

0.2H

c.

0.15H

d.

0.25H

Discuss
Answer: (a).0.1H
Q32.
In Francis formula, the effective length is

a.

L-0.2H

b.

L-0.4H

c.

L-0.3H

d.

L-0.1H

Discuss
Answer: (a).L-0.2H
Q33.
In Francis empirical expression for discharge, the relation between head of water and discharge is

a.

Q is directly proportional to H

b.

Q is directly proportional to H¹﮲⁵

c.

Q is directly proportional to H²﮲⁵

d.

Q is directly proportional to H⁰﮲⁵

Discuss
Answer: (b).Q is directly proportional to H¹﮲⁵
Q34.
In Bazin’s formula, the discharge is inversely proportional to the length of weir.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q35.
The head of water over a rectangular weir is 38 cm. The length of the crest of the weir end contraction suppressed is 1.3 m. Find the discharge using the Francis formula.

a.

0.56 m³/s

b.

0.75 m³/s

c.

0.85 m³/s

d.

0.69 m³/s

Discuss
Answer: (a).0.56 m³/s
Q36.
The head of water over a rectangular weir is 28 cm. The length of the crest of the weir end contraction suppressed is 1.27 m. Find the discharge using the Francis formula.

a.

0.346 m³/s

b.

0.556 m³/s

c.

0.788 m³/s

d.

0.225 m³/s

Discuss
Answer: (a).0.346 m³/s
Q37.
The head of water over a rectangular weir is 26 cm. The length of the crest of the weir end contraction suppressed is 1.25 m. Find the discharge using the Francis formula.

a.

0.304 m³/s

b.

0.502 m³/s

c.

0.350 m³/s

d.

0.625 m³/s

Discuss
Answer: (a).0.304 m³/s
Q38.
Find the discharge over a cipolletti weir of length 1.5 m when the head over the weir is 0.85 m. Take Cd = 0.61.

a.

2.12 m³/s

b.

1.25 m³/s

c.

2.5 m³/s

d.

1.5 m³/s

Discuss
Answer: (a).2.12 m³/s
Q39.
Find the discharge over a cipolletti weir of length 1.3 m when the head over the weir is 0.65 m. Take Cd = 0.60.

a.

2.12 m³/s

b.

1.21 m³/s

c.

2.5 m³/s

d.

1.5 m³/s

Discuss
Answer: (b).1.21 m³/s
Q40.
In discharge of water over narrow crested weir, head of water is directly proportional to Discharge Coefficient.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
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