GATE Civil Engineering (CE) 2018 Shift 2 Solved Paper

Question : 34 of 65

Marks: +1, -0

The intensity of irrigation for the Kharif season is

50 \%

for an irrigation project with culturable command area of 50,000 hectares. The duty for the Kharif season is 1000 hectare/cumec. Assuming transmission loss of

10 \%

, the required discharge (in cumec, up to two decimal places) at the head of the canal is _________

Your Answer:

Validate

Solution:

Culturable command area

=50000

ha
Intensity of irrigation for kharif season

=50 \%

∴

Area under kharif

=25000

ha
Duty for kharif season

=1000

ha/cumec
Duty

=\;{\;\text " Area "\;}/{\;\text " Discharge "\;}

∴

Discharge at the head of field

Q=\;{25000 {ha}}/{1000 {ha} {/} {cumec}}=25

cumec
Transmission/conveyance loss

=10 \%

∴ \;\; η_{\;\text "carweyance "\;}=90 \%

Discharge at the head of canal

=\;{25}/{0.9}

cumec

=27.78

cumec

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