Barometer is used to measure
A. Pressure in pipes, channels etc.
B. Atmospheric pressure
C. Very low pressure
D. Difference of pressure between two points
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Manometer is used to measure
A. Pressure in pipes, channels etc.
B. Atmospheric pressure
C. Very low pressure
D. Difference of pressure between two points
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A manometer is used to measure
A. Atmospheric pressure
B. Pressure in pipes and channels
C. Pressure in Venturimeter
D. Difference of pressures between two points in a pipe
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A differential manometer is used to measure
A. Atmospheric pressure
B. Pressure in pipes and channels
C. Pressure in Venturimeter
D. Difference of pressures between two points in a pipe
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Hot wire anemometer is used to measure
A. Pressure in gases
B. Liquid discharge
C. Pressure in liquids
D. Gas velocities
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A venturi-flume is used to measure
A. Pressure of liquid
B. Discharge of liquid
C. Pressure difference between two points in a channel
D. Pressure difference between two points in a pipe
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The critical depth meter is used to measure
A. Velocity of flow in an open channel
B. Depth of flow in an open channel
C. Hydraulic jump
D. Depth of channel
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A point, in a compressible flow where the velocity of fluid is zero, is called
A. Critical point
B. Vena contracta
C. Stagnation point
D. None of these
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Dynamic viscosity of most of the gases with rise in temperature
A. Increases
B. Decreases
C. Remain unaffected
D. Unpredictable
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Dynamic viscosity of most of the liquids with rise in temperature
A. Increases
B. Decreases
C. Remain unaffected
D. Unpredictable
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The discharge through a reaction turbine __________ with the increase in unit speed.
A. Decreases
B. Increases
C. Remain same
D. None of these
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Poise is the unit of
A. Surface tension
B. Capillarity
C. Viscosity
D. Shear stress in fluids
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The hydraulic efficiency of an impulse turbine is the
A. Ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
B. Ratio of the actual work available at the turbine to the energy imparted to the wheel
C. Ratio of the work done on the wheel to the energy of the jet
D. None of the above
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In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate and α = Inclination of the gate with the normal to the side of the lock)
A. sin α P
B. sin α 2 P
C. 2 sin α P
D. sin 2 α 2 P
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A fluid which obeys the Newton's law of viscosity is termed as
A. Real fluid
B. Ideal fluid
C. Newtonian fluid
D. Non-Newtonian fluid
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The rise or depression of liquid in a tube due to surface tension will increase in size of tube will
A. Increase
B. Remain unaffected
C. May increase or decrease depending on the characteristics of liquid
D. Decrease
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Casting of a centrifugal pump is designed so as to minimize
A. Friction loss
B. Cavitations
C. Static head
D. Loss of kinetic energy
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Viscosity of water in comparison to mercury is
A. Higher
B. Lower
C. Same
D. Higher/lower depending on temperature
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A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is
A. 175.4 r.p.m.
B. 215.5 r.p.m.
C. 241.5 r.p.m.
D. 275.4 r.p.m
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Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure.
A. Plus
B. Minus
C. Divide
D. Multiply
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