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Fluid Mechanics & Hydraulic Machinery Imp Questions Pdf file
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Fluid Mechanics & Hydraulic Machinery (FMHM) -Question Bank
Fluid Mechanics & Hydraulic Machinery UNIT-I
- Differentiate between U-tube and Inverted U-tube differential manometers.
- State Newton’s law viscosity and explain how viscosity varies with temperature for liquids and gases.
- Define viscosity and derive Newton’s law of viscosity.b)If the velocity distribution over a plate is given by u = (2/3)y – y2, in which ‘u’ is the velocity in m/s at a distance ‘y’ meter above the plate, determine the shear stress at y=0 and y=0.15m. Take dynamic viscosity of the fluid as an 8.63 poise.
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Fluid Mechanics & Hydraulic Machinery UNIT-II
- Define and state the applications of momentum equation.
- State the assumptions and derive Bernoulli’s equation for flow along a streamline.
- Define path line, streamline steam tube and streak line.
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Fluid Mechanics & Hydraulic Machinery UNIT-III
- Define boundary layer and boundary layer thickness.
- Define displacement thickness, momentum thickness, and energy thickness.
- Derive an expression for displacement thickness due to the formation of the boundary layer.
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Fluid Mechanics & Hydraulic Machinery UNIT-IV
- A jet of water 50 mm in diameter issues with a velocity of 10m/second impinges normally on a stationary flat plate which moves forward motion. Determine the force exerted by the jet on the plate and the work done.
- Give the classification of turbines.
- Differentiate the impulse and reaction turbines.
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Fluid Mechanics & Hydraulic Machinery UNIT-V
- Give the classification of centrifugal pumps.
- Differentiate between centrifugal and reciprocating pumps.
- What is the necessity of priming in centrifugal pumps?
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