The fluid velocity varies as the cube of the cylinderical pipe diameter in case of steady state laminar flow at constant pressure drop for __________ fluid.
Q.4.
The __________ is measured by a piezometric opening.
Q.5.
The bulk modulus of elasticity of a liquid
Q.6.
For the transfer of solution of thick slurry, the pump used is a __________ pump.
Q.7.
__________ is an example of axial flow impeller.
Q.8.
Water is flowing at 1 m/sec through a pipe (of 10 cm I.D) with a right angle bend. The force in Newtons exerted on the bend by water is
Q.9.
Momentum transfer in laminar flow of fluids results due to the
Q.10.
A centrifugal pump is called a turbine pump, if it is having a
Q.11.
The head loss in turbulent flow in a pipe varies
Q.12.
Multistage compressors are used in industry, because they
Q.13.
Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases.
Q.14.
In laminar flow through a round tube, the discharge varies
Q.15.
What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate?
Q.16.
Which of the following facilitates close control of flow of fluids?
Q.17.
In area meter (e.g., rotameter), with increase in the fluid flow rate, the
Q.18.
A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg.
Q.19.
The rate of change of moment of momentum represents the __________ by the fluid.
Q.20.
Venturimeter and orificemeter measures the __________ of the fluid.
Q.21.
Hydraulic radius of 6" x 12" cross-section, is __________ inches.
Q.22.
In case of a __________ the energy of flow is considerably decreased downstream of the machine.
Q.23.
Each term in Bernaulli's equation represents the __________ of the fluid.
Q.24.
Drag force on the float of a rotameter is(where Q = flow rate of the )
Q.25.
The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its
Q.26.
The discharge through a semi-circular weir varies as (where, H = Head of liquid.)
Q.27.
Fluid flow in a/an __________ is an example of pressure flow.
Q.28.
Select the correct statement.
Q.29.
The maximum depth from which a centrifugal pump can draw water is
Q.30.
A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 10³ VOM + 10.94 x 10⁶ V²OM (SI units) If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed ?
Q.31.
Pitot tube measures the __________ of a fluid.
Q.32.
What is the maximum theoretical suction lift (metres) of a reciprocating pump?
Q.33.
In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature )
Q.34.
The pressure intensity is the same in all directions at a point in a fluid
Q.35.
Bernoulli's equation is dependent on the
Q.36.
The speed of a sound wave in a gas is analogous to the speed of
Q.37.
Newton's law of viscosity relates the
Q.38.
In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?
Q.39.
__________ pumps are a group of vacuum pumps.
Q.40.
If the discharge of a centrifugal pump is throttled, then its suction lift
Q.41.
The discharge through a V-notch weir varies as
Q.42.
In an incompressible fluid, the density is
Q.43.
The flow of gas along a pipe in the direction of decreasing pressure causes decrease in its
Q.44.
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
Q.45.
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.
Q.46.
With decrease in particle size to be fluidised by a particular fluid, the operating range of fluidisation velocity
Q.47.
Hydraulic __________ works on the principle of Pascal's law of transmission of fluid pressure.
Q.48.
Power requirement of fans having constant wheel diameter varies __________ fan speed.
Q.49.
Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number?
Q.50.
Priming is needed in a __________ pump.
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