14. Two pipelines, one carrying oil of relative density 0.9 and other carrying water are connected
to a manometer as shown in Figure. By what amount, the pressure in water pipeline should
be increased so that mercury levels in both the limbs of the manometer become equal?

601

3 |
1.5m
Mercury
(A) 7.41 kPa (B) 14.92 kPa
(0) 12.41 kPa (D) 24.82 kPa

15. The flow of glycerin (kinematic viscosity = 5 x 10-4) in an open channel is to be modeled ina
laboratory flume, using water (kinematic viscosity = 10-6) as flowing fluid. It both gravity and
viscosity are important, what should be the ratio of prototype to model dimension for
maintaining dynamic similarity?

(A) 1 (8) 8
(C) 63 0) 200

16. A water course commands an irrigated area of 1000 ha. The intensity of irrigation of rice is
70%. The transplantation of crop takes 15 days and during transplantation period total depth
of water required by the crop on the field is 500 mm. During the transplantation period, the
useful rain falling on the field is 120 mm. Assuming the loss of water in the watercourse as
20%, the discharge at the head of the water course will be :

(^) 2.05 ‏ثم‎ (B) 2.6 m/s
(C) 5.73 m/s (D) 10.26 8

A 7 085/2022
[.7.0.]