1. 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

Answer: in Kharif season to Rabi season

Explanation:


2. 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

Answer:

Explanation:


3. A structure constructed in an irrigation canal for the purpose of wasting some of its water, known as a ?

fall

escape

regulator

none of these

Answer: escape

Explanation:


4. Kennedy gave a relation between ?

velocity and hydraulic mean depth

area and velocity

critical velocity and the depth of flowing water

all of the above

Answer: critical velocity and the depth of flowing water

Explanation:


5. A river meandering through an alluvial plain has a series of consecutive curves of order connected with short straight sketches, is called ?

crossing

meandering belt

meandering length

none

Answer: crossing

Explanation:


6. A land is said to be water-logged when ?

the air circulation is stopped in the root zone due to the rise in water table

it is submerged in flood

the soil pores within a depth of 40 cm are saturated

all of the above

Answer: the air circulation is stopped in the root zone due to the rise in water table

Explanation:


7. The narrow strip of land left at the ground level between the inner toe of the bank and top edge the cutting, is known as ?

free board

dowel

inspection roadway

berm

Answer: berm

Explanation:


8. When the water is thrown into a well over a crest from where it escapes near its bottom, the ?

rapid fall

cylinder fall

pipe fall

vertical type fall

Answer: cylinder fall

Explanation:


9. The amount of precipitation is measured by ?

rain gauge

osmoscope

turbidimeter

all of these

Answer: rain gauge

Explanation:


10. For low navigation the type gate used ?

rolling gate

bear trap gate

vertical lift gate

drum gate

Answer: bear trap gate

Explanation: