Civil Engineering - Irrigation

Exercise :: Irrigation - Section 3

36. 

Pick up the correct sequence of the part of a canal system from the following

A. Head work-distributary-branch canal-minor
B. Head works-main canal-branch canal-dis-tributary-minor
C. Head works-main canal-branch canal-minor-distributary
D. Heads works-branch canal-main canal distributary, minor.

Answer: Option B

Explanation:

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37. 

A counter berm is

A. a horizontal benching provided on the inside slope
B. a horizontal benching provided on the outside slope
C. a vertical benching provided on the outer edge of the bank
D. a vertical benching provided on the inner edge of the bank.

Answer: Option B

Explanation:

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38. 

Pick up the correct statement from the following:

A. Water table generally follows the ground surface above it with a few exceptions
B. Static level of water in an open well indicates the position of the water table
C. Saturated pores of a soil in the capillary zone above water table have negative pressure
D. At water table, hydrostatic pressure is zero
E. All the above.

Answer: Option E

Explanation:

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39. 

For diversion of flood water of rivers, the type of canal constructed, is

A. ridge canal
B. perennial canal
C. inundation canal
D. canal.

Answer: Option C

Explanation:

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40. 

To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls

A. of R.C.C. or steel plate 8 cm thick
B. of height l/3rd to l/4th the depth of water in the main canal
C. spaced at interval of times their heights
D. extending about one metre beyond a line drawn at an inclination of 2 : 1 to the axis of main canal
E. all the above.

Answer: Option E

Explanation:

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