Irrigation Engineering - Study Mode

[#36] The difference in level between the top of a bank and supply level in a canal, is called
Correct Answer

(B) Free board

Explanation

Solution: In irrigation engineering, the difference in level between the top of a bank and the supply level in a canal is termed as the free board . This term refers to the vertical distance between the water level in the canal and the top of the embankment or bank. The free board provides a safety margin to prevent overflow or breach of the canal embankment during high water flow or flooding events.

[#37] The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called
Correct Answer

(D) Syphon aqueduct

[#38] The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to
Correct Answer

(B) 45°

[#39] Which of the following can be used as a meter fall ?
Correct Answer

(A) vertical drop fall

[#40] The value of Sodium Absorption Ratio for high sodium water lies between
Correct Answer

(C) 18 to 26