A pressure of 10 m head of water is equivalent to __________ kN/m2 .
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Viscosity of water at 40°C lies in the range of
A. 1 × 10-3 to 2 × 10-3 kg/m.s
B. 0.5 × 10-3 to 1 × 10-3 kg/m.s
C. 1 to 2 kg/m.s
D. 0.5 to 1 kg/m.s
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Which of the following conditions must be satisfied for lift force to be developed?
A. The body should be bluff body
B. The body should be stream lined
C. Circulation around the body is essentially required
D. The main stream velocity must approach the velocity of sound in that fluid medium
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Pipes having diameter 14 inches or more are designated by their
A. Outside diameter
B. Inside diameter
C. Schedule number
D. None of these
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For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to
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Power requirement of fans having constant wheel diameter varies __________ fan speed.
A. As square of
B. Directly as
C. As cube of
D. None of these
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Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number?
A. Fanning equation
B. Blake-Pllummer equation
C. Hagen-Poiseulle equation
D. Kozney-Karman equation
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Major loss in sudden contraction in pipe flow is due to
A. Boundary friction
B. Flow contraction
C. Expansion of flow after sudden contraction
D. None of these
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The Prandtl pitot tube measures the
A. Velocity at a point in the flow
B. Pressure at a point
C. Average flow velocity
D. Pressure difference in pipe flow
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Pick out the correct statement.
A. Human blood is a Newtonion fluid
B. A Newtonion fluid obeys Newton's law of cooling
C. For a non-Newtonion fluid, a straight line passes through the origin in a plot between shear stress and shear gradient
D. Thin lubricating oil is an example of a non-Newtonion fluid
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With decrease in particle size to be fluidised by a particular fluid, the operating range of fluidisation velocity
A. Widens
B. Squeezes
C. Does not change
D. Unpredictable from the data
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Hydraulic __________ works on the principle of Pascal's law of transmission of fluid pressure.
A. Press
B. Turbine
C. Pump
D. Coupling
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Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible?
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The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid.
A. Newtonion
B. Dilatant
C. Pseudo-plastic
D. Non-Newtonion
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Enamels and paints are generally __________ fluid.
A. Reheopectic
B. Pseudo-plastic
C. Thixotropic
D. Dilatant
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In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature )
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The pressure intensity is the same in all directions at a point in a fluid
A. Only when the fluid is frictionless
B. Only when the fluid is at rest having zero velocity
C. When there is no motion of one fluid layer relative to an adjacent layer
D. Regardless of the motion of one fluid layer relative to an adjacent layer
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For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is
A. More
B. Less
C. Equal
D. Either A or B; depends on the viscosity of the fluid
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Working principle of manometer comprises of balancing a coloumn of liquid against the pressure to be measured. Inclined tube manometer is especially used for the measurement of __________ pressure.
A. Small differential
B. Atmospheric
C. Absolute
D. Gage
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Differential manometer measures the
A. Atmospheric pressure
B. Sub-atmospheric pressure
C. Pressure difference between two points
D. None of these
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