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Civil Engineering Objective Questions { Hydraulics }

92.  If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is
A. 400 H.P.
B. 450 H.P.
C. 500 H.P.
D. 550 H.P.

93. From a nozzle exposed to atmosphere, the liquid jet traverses
A. a straight line
B. a circular path
C. an elliptical path
D. a parabolic path.

94. The ratio of the maximum height to which a jet inclined through 0 rises, to its total horizontal span is
A. ?4 sin 0
B. cos 0
C. -4 tan 0
D.1 cot 0.

95.  A jet projected at an angle of 45?, 40 m from the foot of a vertical column, just reaches the top of the column. The height of the column is
A. 15 m
B. 20 m
C. 30 m
D. 40 m

96. Pick up the incorrect statement from the following :
A. In radial flow, fluid flows such that pressure and velocity at any point change with respect to its distance from the central axis
B. In radial flow, velocity of flow is in a radial direction
C. In radial flow, flow may take place radially inward to or outward from the centre
D. In radial flow, flow is one dimensional with stream lines parallel.

97.  When the whole fluid mass rotates either due to fluid pressure or gravity or rotation previously imparted, the motion is known as
A. free vortex
B. forced vortex
C. non-potential vortex
D. rotational vortex.

98.  In a centrifugual pump casing, the flow of water leaving the impeller, is
A. rectilinear flow
B. radial flow
C. free vortex motion
D. forced vertex.

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