Irrigation Engineering Set 13 MCQs

Q1 | Lacey assumed a trapezoidal cross-section of a regime channel

Yes

No

Q2 | Lining of a canal

increases

decreases

does not effect

Q3 | The berms when fully formed

reduce the absorption losses and prevents leaks

protect the bank from erosion because of wave action

provide a scope for future widening the channel

all of the above

Q4 | The smooth entry, the regulators are aligned at an angle of

60?

80?

110?

130?

Q5 | Irrigation is supplementary to rainfall.

Agree

Disagree

Q6 | Trough stage of river is most suitable location for diversion head works.

Yes

No

Q7 | A useful soil moisture for plant growth is

capillary water

gravitational water

hygroscopic water

all of these

Q8 | An outlet in which the discharge depends upon the difference in level between the water levels in distributing channel and the water course, is known as

non-modular outlet

semi-module outlet

modular outlet

rigid module

Q9 | The river training works are adopted on a river

to pass high flood discharge safely and quickly through the breach

to direct and guide the river flow

to reduce bank erosion to a minimum

all of the above

Q10 | The science which deals with the measurement of water is called hydrometry.

TRUE

FALSE

Q11 | The gap or margin of height, between full supply level (F.S.L.) and top of the bank is called

free board

dowel

inspection roadway

berm

Q12 | The optimum depth of kot watering is 19 cm for

wheat

sugar-cane

rice

cotton

Q13 | The width of meandering belt is the

transverse distance between the apex point of one curve and apex point on reverse curve

axial distance along the river between tangent point of one curve and tangent point of other curve of same order

axial distance along the river between the apex point of one curve and apex point on reverse curve

transverse distance along the river between tangent point of one curve and tangent point of other curve of same order

Q14 | The function of a scouring sluice is

to control the silt entry into the canal

to scour the silt deposited in the river bed above the approach channel

to pass the low floods without dropping the shutters of the main weir

all of the above

Q15 | In case of syphon aqueduct, the H.F.L. of the drain is

much below the bottom of the canal trough

much higher above the canal bed

in level with the canal bed

none of the above

Q16 | A canal head work in rocky stage of a river is not suitable because

more cross drainage works are required

a costly head regulator is required

more falls are necessary to dissipate the energy

all of the above

Q17 | Non-silting, non-scouring velocity is called

mean

critical

Q18 | Sprinklar irrigation is adopted for

level

uneven

hilly

Q19 | In a Sarda type fall, the trapezoidal crest is used for discharges over 14 m3/s.

Correct

Incorrect

Q20 | The flexibility of a sub-proportional outlet is less than one

Yes

No

Q21 | A part of water which will move out of the soil, if proper drainage is provided, is known as gravitational water.

TRUE

FALSE

Q22 | In level crossing, the water level of canal is much higher than that of the drainage.

TRUE

FALSE

Q23 | The length of groyne depends upon the magnitude of river training required.

Right

Wrong

Q24 | When the quantity of the earth is much in excess of the quantity required for filling, it has to be deposited in the form of spoil banks. The spoil banks are made on

the right side

the left side

both the sides

all of these

Q25 | Irrigation

increases

decreases