From a nozzle exposed to atmosphere, the liquid jet traverses a straight line a

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

Correct Answer

a parabolic path.

Hydraulics problems

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1. If u, v, w are the components of the velocity v of a moving particle, the equation represents
Options
A. one diamensional flow
B. two dimensional flow
C. three dimensional flow
D. none of these.

3. Euler's equation for the motion of liquids assumes that
Options
A. fluid is viscous
B. fluid is homogeneous and incompressible
C. velocity of flow is non-uniform over the section
D. flow is unsteady along the stream line.

4. If cohesion between the molecules of a fluid is more than adhesion between the fluid and glass, the free level of fluid in a dipped glass tube will be
Options
A. higher than the surface of liquid
B. same as the surface of liquid
C. lower than the surface of liquid
D. none of these.

8. Mercury is generally used in barometers because
Options
A. its vaour pressure is practically zero
B. the height of the barometer will be less
C. it is a best liquid
D. both (a) and (b) above
E. both (b) and (c) above.

9. For the most economical trapezoidal open channel,
Options
A. half of the top width must be equal to one of the sloping sides
B. the hydraulic mean depth must be equal to half the depth of flow
C. the semicircle drawn with top width as diameter must touch the three sides of the channel
D. All of these.

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