Spillways and Spillway Gates MCQs

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

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Spillways and Spillway Gates MCQs | Page 4 of 9

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Q31.
A siphon spillway in a concrete gravity dam is in the shape of ________________

a.

U-shape

b.

Inverted U-shape

c.

Horizontal bend through the abutment

d.

Any straight line

Discuss
Answer: (b).Inverted U-shape
Q32.
The energy dissipation at the toe of the spillway is affected basically by the use of hydraulic jump in _______________________

a.

roller bucket

b.

a ski-jump bucket

c.

a sloping apron below the downstream river bed

d.

both roller and ski-jump bucket

Discuss
Answer: (c).a sloping apron below the downstream river bed
Q33.
The most ideal condition for energy dissipation in the design of spillways is the one when the tail-water rating curve coincides with the jump rating curve at all discharge.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q34.
When the tail-water depths in the river downstream of a spillway are quite low such that the tail-water curve at all discharges lies below the post jump depth curve, then the energy dissipation can be affected best by ___________________

a.

a roller bucket

b.

a ski-jump bucket

c.

either roller or ski-jump bucket

d.

a sloping apron

Discuss
Answer: (b).a ski-jump bucket
Q35.
The device which does not help in energy dissipation at the bottom of a hydraulic structure over which water spills is ________________

a.

chute block

b.

dentated sill

c.

morning glory

d.

baffle piers

Discuss
Answer: (c).morning glory
Q36.
The formation of hydraulic jump at the foot of a spillway is one of the common methods of energy dissipation because ______________________

a.

it destroys more than 90% of total energy by the turbulence produced in the jump

b.

it reduces the kinetic energy by increasing the depth of flow

c.

its action is not understood

d.

it reduces the kinetic energy by decreasing the depth of flow

Discuss
Answer: (a).it destroys more than 90% of total energy by the turbulence produced in the jump
Q37.
The safety valve of a dam is its __________________

a.

drainage gallery

b.

inspection gallery

c.

spillway

d.

outlet sluices

Discuss
Answer: (c).spillway
Q38.
An ungated spillway starts functioning as soon as the water level in the reservoir crosses the __________________

a.

maximum reservoir level

b.

minimum reservoir level

c.

maximum conservation level

d.

full Supply level

Discuss
Answer: (c).maximum conservation level
Q39.
Which of the following is the simplest type of spillway and may be constructed on small bunds or thin arch dams?

a.

Straight drop spillway

b.

Ogee spillway

c.

Shaft spillway

d.

Siphon spillway

Discuss
Answer: (a).Straight drop spillway
Q40.
The spillway can be best built independently of the dam when there is _________________________

a.

deep narrow gorge with steep slopes

b.

deep narrow gorge with gradual slopes

c.

wide gorge with a gradual slope

d.

wide valley with moderate slopes

Discuss
Answer: (a).deep narrow gorge with steep slopes
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