Question 1 : The horizontal component of the force on a curved surface is equal to
1. weight of liquid retained by the curved area.
2. product of pressure at its centroid and the area
3. weight of liquid vertically below the curved surface
4. orce on a vetical projection of the curved surface
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Question 2 : A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is
1. more than 12.2 m of the water
2. none of these
3. equal of 12.2 m of water
4. less than 12.2 m of the water
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Question 3 : Maximum efficiency of transmission of power through a pipe, is
1. 66.67%.
2. 33.30%
3. 50%
4. 25%
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Question 4 : The phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid surface, is
1. critical discharge
2. none of these.
3. water hammer
4. hydraulic jump
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Question 5 : When a body is totally or partially immersed in a fluid, it is buoyed up by a force equal to
1. weight of the body
2. difference of weights of the fluid displaced and that of the body
3. weight of the fluid displaced by the body
4. weight of the body and fluild displaced by the body
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Question 6 : An ideal flow of a liquid obeys
1. Newton's law of viscosity
2. Continuity equation
3. Newton's second law of motion
4. dynamic viscosity law,
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Question 7 : If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is
1. 500 H.P.
2. 450 H.P.
3. 400 H.P.
4. 550 H.P.
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Question 8 : The momentum correction factor (?) for the viscous flow through a circular pipe is
1. 1.5
2. 1.33
3. 1.25
4. 2
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Question 9 : An independent mass of a fluid does not posses
1. elevation energy
2. pressure energy
3. none of these.
4. kinetic energy
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Question 10 : A piezometer opening in pipes measures
1. negative static pressure.
2. total pressure
3. static pressure
4. velocity head
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