Rivers and Dam Reservoirs MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Rivers and Dam Reservoirs, 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 Rivers and Dam Reservoirs 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 Rivers and Dam Reservoirs mcq questions that explore various aspects of Rivers and Dam Reservoirs problems. Each MCQ is crafted to challenge your understanding of Rivers and Dam Reservoirs 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 Rivers and Dam Reservoirs MCQs are your pathway to success in mastering this essential Irrigation Engineering topic.

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Rivers and Dam Reservoirs MCQs | Page 16 of 19

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Q151.
Trap efficiency of a storage reservoir is defined as the ratio of ___________________

a.

total annual sediment inflow to the reservoir capacity

b.

total sediment deposited in a given period to the total sediment inflow in that period

c.

total annual sediment deposited in the reservoir to the dead storage capacity of the reservoir

d.

reservoir capacity to the total annual sediment

Discuss
Answer: (b).total sediment deposited in a given period to the total sediment inflow in that period
Q152.
Capacity inflow ratio for a storage reservoir is defined as the ratio of _______________________

a.

reservoir capacity to the average annual flood inflow

b.

reservoir capacity to the average annual sediment inflow

c.

the dead storage capacity of the reservoir to the average annual sediment deposited

d.

total annual sediment inflow to the reservoir capacity

Discuss
Answer: (a).reservoir capacity to the average annual flood inflow
Q153.
The capacity-inflow ratio for a reservoir _________________

a.

is a constant factor overtime

b.

increases with time

c.

decreases with time

d.

may increase or decrease with time

Discuss
Answer: (c).decreases with time
Q154.
A sequent peak algorithm is a plot between __________________

a.

Accumulated flow v/s time

b.

Discharge v/s time

c.

(Cumulative Inflow – Cumulative Outflow) v/s time

d.

Mass outflow v/s time

Discuss
Answer: (d).Mass outflow v/s time
Q155.
A flow duration curve is a curve plotted between ________________

a.

Accumulated flow v/s time

b.

Discharge v/s time

c.

(Cumulative Inflow – Cumulative Outflow) v/s time

d.

Streamflow v/s Percent of time the flow is equaled or exceeded

Discuss
Answer: (d).Streamflow v/s Percent of time the flow is equaled or exceeded
Q156.
A steep slope of the flow duration curve indicates a stream with _________________

a.

highly variable discharge

b.

small variability of flow

c.

considerable base flow

d.

large flood plains

Discuss
Answer: (a).highly variable discharge
Q157.
The lowest portion of the capacity-elevation curve of a proposed irrigation reservoir draining 20 km² of catchment is represented by the following data:

i. The rate of silting for the catchment = 300 m³ / km² / year
ii. Life of the reservoir = 50 years
iii. Dead storage = 30
iv. The FSD of the canal at the head = 80 cm
v. The crop water requirement = 250 ha.m
vi. Dependable yield of the catchment = 0.29 m

Calculate the gross capacity of the reservoir.

a.

287.5 ha.m

b.

317.5 ha.m

c.

580 ha.m

d.

37.5 ha.m

Discuss
Answer: (b).317.5 ha.m
Q158.
As the height of a proposed dam is increased, the cost per unit of storage initially increases and then decreases.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q159.
The economical height of a dam is that height for which the ____________________

a.

cost per unit of storage is minimum

b.

benefit-cost ratio is maximum

c.

net benefits are maximum

d.

benefit-cost ratio is minimum

Discuss
Answer: (a).cost per unit of storage is minimum
Q160.
If 20% of the reservoir capacity is earmarked for dead storage in a storage reservoir of 30 M.cum and the average annual silt deposition in the reservoir is 0.1 M cum, then the useful life of the reservoir will start reducing after ____________

a.

60 years

b.

120 years

c.

240 years

d.

300 years

Discuss
Answer: (a).60 years
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