Q.1
Unit of mass velocity is
Q.2
Scale up of agitator design requires
Q.3
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.
0 h : 0 m : 1 s