72.

73.

74.

75.

76.

77.

78.

Given that the pressure is 3 kg/cm2, the equivalent height of water column is
(A) 30m (B) 3cm
(C) 10m (D) 100%

When the metacentre is lower than the centre of gravity of the floating body, the body is
said to be in a state of

(A) Stable equilibrium (B) Neutral equilibrium.
(C) Unstable equilibrium (D) None of these

An imaginary line in the fluid, the tangent to which at any point gives the direction of
motion at that point is termed as

(^) Path line (B) Equipotential line

(C) Filament line (D) Stream line

If the density and the specific volume of the fluid does not change during the flow, the
flow is called

(A) Streamline flow (8) Incompressible flow
(C) Steady flow (D) Irrotational flow

Which of the following statements is not true in case of a venturimeter ?
(A) In convergent section, fluid velocity increases and static pressure decreases.

(B) The length of the divergent section is larger than that of the convergent
section

(C) The maximum cone angle of the diverging area is more than that of the
converging area

(D) The diameter of the throat area is kept constant

If 9” is the angle of a triangular notch in degree, ‘C,’ is the coefficient of discharge,

“ള്‌ the acceleration due to gravity and ‘H’ represents the height of the liquid above the
apex of the notch, the discharge over the notch is given by

(A) - ‏وہ‎ १ प्र (B) 3 cy fie tan प्र?
15 2 15 2
8 Pasi 6 3/2 8 7 952
ಲ). —Cyq/2g sin—H D) —Cy/2g sin—H
(© 5८०५९ ७ण (0) പ്പോ

The head loss due to friction in a pipe of 1൩ diameter and 10km long in which the water

is flowing at a velocity of 1 m/s is (Take coefficient of friction as 0.005 and
“ഗ്‌ as 10 m/s).
(A) 15m (छ) Sm
(൭ 20m (D) 10m
SD ௫௫ இ

[P.T.O.]