B:-Large gullies

C:-Medium gullies

D:-Gullies depth are more than 5m
Correct Answer:-Question Cancelled

Question26:-Recommended maximum velocities in low pressure underground
pipelines are in the range of

A:-2.5 to 3.5 m/s
B:-2.3 to 2.5 m/s
C:-1.3 to 1.5 m/s
D:-0.1 to 0.4 m/s
Correct Answer:- Option-C

Question27:-The actual velocity at which water is moving through an aquifer is
related to the Apparent / Seepage velocity given by Darcys law, by the expression

A:-v,=v/n
B:-v,=Vxn
விம
D:-v.=v/e
Correct Answer:- Option-A

Question28:-The Delta for a crop when its duty is 864 hectares/cumec and base
period is 120 days is

A:-864 cm
B:-120 cm
C:-100 cm
D:-86.4 cm
Correct Answer:- Option-B

Question29:-In the silt theories for design of Alluvial channels by Kennedy which of
the following statements are true:

1. Silt is kept in suspension by the vertical component of eddies

ii. Eddies generated from the sides of Trapezoidal channel was neglected

iii. Critical velocity formula depends only on the depth of flow

iv. Two regime conditions exist : initial and final regime

A:-i, ii and iii

B:-all the above

0:- ۷

Correct Answer:- Option-A

Question30:-The drilling method best adapted for drilling deep holes in
unconsolidated Alluvial formations is

A:-cable tool percussion drilling