Irrigation Engineering Set 8 MCQs

Q1 | Distributary head regulators are provided

to control the supplies to the off-taking channel

to control the silt entry in the off-taking canal

to stop the supply, when not needed, in the off-taking canal

all of the above

Q2 | Which of the following is a type of semi-module outlet?

Submerged pipe outlet

Open flume outlet

Kennedy's gauge outlet

all of these

Q3 | The opening in the weir wall with a crest at low level on the canal side is known as under sluice or scouring sluice.

Correct

Incorrect

Q4 | The optimum depth of kor watering for wheat in the plains of north India is

13.5 cm

16.5 cm

19 cm

21 cm

Q5 | The flexibility of a hyper-proportional outlet is

greater than

equal to

less than

Q6 | In a proportional outlet, the rate of change of its discharge is

equal to

more than

less than

Q7 | A weir fails due to

rupture of floor due to uplift

rupture of floor due to suction caused by standing wave

scour on the upstream and downstream of the weir

all of the above

Q8 | The average delta of rice crop is nearly

30 cm

60 cm

120 cm

150 cm

Q9 | The science which deals with the physical features and conditions of water on the earth surface is called

hydrometry

hydrography

hydrosphere

hydraulics

Q10 | A groyne with a curved head is known as

hockey groyne

burma groyne

denehy groyne

none of these

Q11 | The slope of a canal, for a discharge of 300 cumecs, should be

1 in 4000

1 in 6000

1 in 8000

1 in 10000

Q12 | The precipitation caused by natural rising of warmer lighter air in colder and denser surroundings, is called

convective precipitation

orographic precipitation

cyclonic precipitation

none of these

Q13 | The sensitivity of a rigid module is

equal to zero

less than unity

equal to unity

more than unity

Q14 | The Sarda canal has a

glacis type fall

vertical drop fall

Ogee fall

rapid fall

Q15 | When discharge of an outlet is independent of the water levels in the water course and the distributary, the outlet is termed as a

flexible outlet

non-modular outlet

semi-module outlet

rigid module

Q16 | For low navigation dams, the type of gate used is

rolling gate

bear trap gate

vertical lift gate

drum gate

Q17 | The coefficient of creep is the reciprocal of percolation coefficient.

Right

Wrong

Q18 | Cross regulators are provided

to raise the water level to its upstream during the periods of low discharges in the parent channel

to help in closing the supply to down stream of the parent channel

to absorb fluctuation in various sections of the canal system

all of the above

Q19 | The commonly used rain gauge is

weighing bucket type

tipping bucket type

float type

none of these

Q20 | Which of the following statement is wrong?

In Kennedy's wilt theory, no account was taken of silt concentration and bed load.

Kennedy did not gave any slope equation.

In Kennedy's theory, silt grade and silt charge were not defined.

none of the above

Q21 | The sensitivity of an outlet is defined as the ratio of the

rate of change of discharge of an outlet to the rate of change of discharge of the distributing channel

rate of change of discharge of an outlet to the rate of change in level of the distributing surface, referred to normal depth of the channel

depth of the sill or the crest level of the module below the full supply of the distributing channel to the full supply depth of the distributing channel

head recovered to the head put in an outlet

Q22 | Crop ratio is the ratio of area irrigated

in Rabi season to Kharif season

in Kharif season to Rabi season

under perennial crop to total crop

under perennial crop to non-perennial crop

Q23 | The depth of root zone is 90 cm for

wheat

sugar cane

rice

cotton

Q24 | A parabolic glacis type fall is commonly known as

Montague fall

Inglis fall

Sarda fall

vertical type fall

Q25 | For Madras catchments, the flood discharge is estimated from Q = CA2/3. This formula is known as

Dicken's formula

Ryve's formula

Nawab Jang Bahadur formula

Inglis formula