Irrigation Engineering Set 11 MCQs

Q1 | The earth's water circulatory system, is known as

water cycle

hydrologic cycle

precipitation cycle

all of these

Q2 | The discharge (Q) over trapezoidal crest of Sarda fall is

same

less

more

Q3 | The channel after attaining its section and longitudinal slope, will be said to be in

initial

final

permanent

Q4 | The ratio of the hed recovered to the head put in an outlet, is called

proportionality

flexibility

sensitivity

efficiency

Q5 | A diversion head work is constructed to

raise water level at the head of the canal

regulate the intake of water into the canal

reduce fluctuations in the supply level of the river

all of the above

Q6 | Irrigation canals are generally aligned along

contour line

water shed

straight line

valley line

Q7 | Kennedy gave his own formula for the determination of mean velocity.

Correct

Incorrect

Q8 | When the water is thrown into a well over a crest from where it escapes near its bottom, the type of fall is called

rapid fall

cylinder fall

pipe fall

glacis fall

Q9 | Cyclonic precipitation results from

lifting of air masses converging into low pressure area

natural rising of warmer, lighter air in colder and denser surrondings

lifting of warm moisture-laden air masses due to topographic barriers

all of the above

Q10 | Which of the following statement is wrong?

In a trapezoidal notch fall, the top width of the notch is kept between 3/4th to full water depth above the sill of the notch.

The energy dissipation takes palce by the provision of roughening devices.

The siphon fall is designed to maintain a fixed supply level in the channel.

Energy dissipators are provided for small discharges.

Q11 | The gaps created in the bank of a canal is called a breach.

Correct

Incorrect

Q12 | In Lane's weighted creep theory, he proposed a weight of

three for vertical creep and one for horizontal creep

three for horizontal creep and one for vertical creep

two for vertical and two for horizontal creep

any one of the above

Q13 | Escapes are also known as

outlet

safety valves

regulators

Q14 | Inundation canals draw their supplies from rivers whenever there is a

low

high

medium

Q15 | The setting for a hyper-proportional outlet is

more

same

Q16 | The method of irrigation used for orchards is

free flooding

border flooding

check flooding

basin flooding

Q17 | For a canal which irrigate the area directly, the fall should be provided at a location where the F.S.L. outstrips the gound level, but before the bed of the canal comes into filling.

Right

Wrong

Q18 | The ratio of the head recovered to the head put in an outlet, is called

proportionality

flexibility

sensitivity

efficiency

Q19 | Lining of a canal is necessary

to minimise the seepage lossses in canal

to prevent erosion of bed and sides due to high velocities

to increase the discharge in canal section by increasing the velocity

all of the above

Q20 | The movement of water through the soil surface into the soil, is called infilteration.

Correct

Incorrect

Q21 | Consumptive use of water by a crop is equal to

the depth of water consumed by evaporation

the depth of water consumed by transpiration

the depth of water consumed by evaporation and transpiration during crop growth, including water consumed by accompanying weed growth

none of the above

Q22 | The duty of irrigation water goes on

increasing

decreasing

Q23 | Which of the following is the correct sequence of the parts of a canal system?

Head works, distributary, branch canals and minor.

Head works, main canal, branch canal, distributary and minor.

Head works, main canal, branch canal, minor and distributary.

none of the above

Q24 | The alignment of a canal

should be such, so as to ensure minimum number of cross drainage works

on a water shed is the most economical

should avoid valuable properties

all of the above

Q25 | The berms provide additional strength to banks and thus make it safe against breaches.

TRUE

FALSE