Irrigation MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Irrigation, a fundamental topic in the field of Civil Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Irrigation 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 Irrigation mcq questions that explore various aspects of Irrigation problems. Each MCQ is crafted to challenge your understanding of Irrigation principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Civil Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Irrigation MCQs are your pathway to success in mastering this essential Civil Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Irrigation. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Irrigation knowledge to the test? Let's get started with our carefully curated MCQs!

Irrigation MCQs | Page 13 of 15

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Q121.
In a syphon aqueduct

a.

drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough

b.

drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage trough

c.

canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough

d.

canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough.

Discuss
Answer: (c).canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough
Q122.
Which one of the following statements is correct ?

a.

The canal system and the drainage system are complementary

b.

The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land

c.

The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream

d.

All the above.

Discuss
Answer: (d).All the above.
Q123.
Garnett's diagrams are used for graphical solution of design equations of a canal by

a.

Lacey's theory

b.

Kennedy's theory

c.

Gibb's theory

d.

Lindlay theory.

Discuss
Answer: (b).Kennedy's theory
Q124.
A current meter measures the velocity of flow, if it is held

a.

on the surface of water

b.

at the bottom of channel

c.

at any point within the cross-section

d.

none of these.

Discuss
Answer: (c).at any point within the cross-section
Q125.
In a concrete canal the approximate permissible velocity of water should not exceed

a.

0.5 m/sec

b.

1 m/sec

c.

1.5 m/sec

d.

2 m/sec

Discuss
Answer: (d).2 m/sec
Q126.
Effective precipitation for a crop may be defined as

a.

total precipitation minus the loss due to evaporation

b.

total precipitation minus the loss due to infiltration

c.

total precipitation during the crop period

d.

available water stored in soil within root zone of the crop.

Discuss
Answer: (d).available water stored in soil within root zone of the crop.
Q127.
If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to

a.

m

b.

m³

c.

m^1/2

d.

m^1/3

Discuss
Answer: (c).m^1/2
Q128.
Lane's weighted creep theory assumes

a.

equal weightage to horizontal and vertical creeps

b.

double weightage to horizontal creep and one weightage to vertical creep

c.

triple weightage to horizontal creep and one weightage to vertical creep

d.

triple weightage to vertical creep and one weightage to horizontal creep

Discuss
Answer: (d).triple weightage to vertical creep and one weightage to horizontal creep
Q129.
Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on

a.

left side

b.

right side

c.

both sides

d.

all the above.

Discuss
Answer: (d).all the above.
Q130.
If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ฯ‰ is the density of water, then

a.

total pressure on the surface is equal to ฯ‰ x

b.

depth of the point at which total pressure acts is equal to its moment of inertia divided by A x

c.

depth of the centre of pressure is 2/3H vertically below the surface

d.

all the above.

Discuss
Answer: (d).all the above.
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