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The top of the weir over which the water flows is known as
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A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?
A. The pressure on the wall at the liquid level is minimum
B. The pressure on the bottom of the wall is maximum
C. The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
D. The pressure on the bottom of the wall is zer
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4
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is
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To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than
A. 2.4 m above the hydraulic gradient
B. 6.4 m above the hydraulic gradient
C. 10.0 m above the hydraulic gradient
D. 5.0 above the hydraulic gradient
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The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)
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A fluid in equilibrium can't sustain
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In a venturi-flume, the flow takes place at
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The discharge over a triangular notch is
A. Inversely proportional to H3/2
B. Directly proportional to H3/2
C. Inversely proportional to H5/2
D. Directly proportional to H5/2
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In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
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The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to
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The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
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The center of gravity of the volume of the liquid displaced by an immersed body is called
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Dimensions of surface tension are
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With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will
D. Depend upon the characteristics of liquid
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According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to
A. The weight of the body
B. More than the weight of the body
C. Less than the weight of the body
D. Weight of the fluid displaced by the body
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A weir, generally, used as a spillway of a dam is
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A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will
D. Increase/decrease depending on depth of immersion
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The loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)
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When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.
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Which of the following is the unit of kinematic viscosity?
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Free surface of a liquid tends to contract to the smallest possible area due to force of
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In the case of steady flow of a fluid, the acceleration of any fluid particle is
D. Zero under limiting conditions
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The pressure measured with the help of a Piezometer tube is in
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Kinematic viscosity is equal to
A. Dynamic viscosity/density
B. Dynamic viscosity × density
C. Density/dynamic viscosity
D. 1/dynamic viscosity × density
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Which of the following meters is not associated with viscosity?
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The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by
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A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.
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Center of pressure on an inclined plane is
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A fluid having no viscosity is known as
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Liquids
B. Occupy definite volume
C. Are not affected by change in pressure and temperature