64. TFlow in a chute ஹன 15 81

66.

67.

68.

69.

70.

೫],

72.

(^) about 2 metres / sec (B) 5.5 metres/sec
(C) supercritical velocities (D) none of these

The volume displaced by one stroke of the piston is known as :
(ക) Piston displacement (18) Piston speed
(C) Both (D) None of the above

Soil is called saline when the pH value is :
(8) less than 4 087
(C) more than 7 (D) below O

A channel designed by Lacey’s theory has a mean velacity of one meter per second. The silt
factor is unity. The hydraulic mean radius will be :

(ಗ) 1.5 meters (B) 2.0 meters

(C) 2.5 meters (D) 1.00 meter
Soil plant water relations relates to the ——————— properties of soil, plant that affects the
movement, retention and use of water. 1

(A) chemical (B) physical

(0) agronomic (2) plant nutrient

For getting maximum power from petrol engine ,the air fuel ratio should be about :
ക) 1 (®) 1:10
© 115 യ . 1:13

Delta of a crop means :
(ಗ) area under the crop
൫) नण period
(©) depth of water required by the crop
(D) ஹை production

Bunds are constructed for the purpose of :
(ಯ) retaining water (B) controlling soil erosion
(0) diverting runoff D) . all of them

In surface method of irrigation water is applied directly from a :
(ಗ) pipe (B) channel
(©) पप्र head (D) sprinkler

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