Q.1
An equipotential line is __________ to the velocity vector at every point.
Q.2
Which of the following relationship is valid for the equilibrium position of the float in a rotameter ?(where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)
Q.3
With increasing flow rate, the hydraulic efficiency of a centrifugal pump
Q.4
What is the ratio of fluid carrying capacity of two pipes having diameters d₁ and d₂ respectively?
Q.5
What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir?
Q.6
Which is the most efficient and best for measuring very small flow rate of gases?
Q.7
Each term of the Bernoulli's equation written in the form, P/ρ + g/gc .Z + v²/2gc = constant , represents the total energy per unit
Q.8
The rate of shear versus the shear stress curves are time dependent for __________ fluid.
Q.9
Specific speed of a centrifugal pump depends upon the __________ head.
Q.10
The energy equation, E + P/ρ + V²/2g +gZ (E = internal energy/mass), is applicable to
Q.11
The dimension of dynamic viscosity is
Q.12
Steady non-uniform flow is exemplified by flow through a/an
Q.13
Pressure drop in packed bed for turbulent flow is given by the __________ equation.
Q.14
The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as
Q.15
Fluid flow through a packed bed is represented by the __________ equation.
Q.16
Volute of a centrifugal pump should be designed in a fashion, such that the
Q.17
One poise (unit of absolute/dynamic viscosity) is equivalent to one
Q.18
Poise is converted into stoke by
Q.19
Boundary layer separation is caused by the
Q.20
Pressure drop in a packed bed for laminar flow is given by the __________ equation.
Q.21
Discharge from a 24 inch pipe of water at 10 ft/sec will be __________ ft³/sec.
Q.22
Minimum fluidisation velocity for a specific system depends upon the
Q.23
When the pipe Reynold's number is 6000, the flow is generally
Q.24
The maximum delivery pressure of compressors can be upto __________ atmospheres.
Q.25
In case of a rotameter, the density of the float material is __________ that of the liquid it replaces.
Q.26
A centrifugal pump has the following specifications:
Power = 4 H.P.; Speed = 800 rpm
Head = 8 metres
Flow = 1000 litres/minutes.
If its speed is halved, then the new head will be __________ metres.
Q.27
In hindered settling, the particles are
Q.28
The main factor on which the behaviour of a mass of fluidised solid depends mainly is the
Q.29
Fluidised beds are formed, when the
Q.30
Isotropic turbulence occurs
Q.31
Pick out the wrong statement.
Q.32
Which of the following flow measuring devices is an area meter?
Q.33
For a given fluid flow rate, which of the following incurs maximum head loss?
Q.34
The ratio of width to depth for the most economical rectangular section in open channel flow is
Q.35
Drag is defined as the force exerted by the
Q.36
Which of the following is a dimensionless parameter?
Q.37
For very low pressure and high discharge rate, the compressor used is a/an __________ compressor.
Q.38
Capacity of a hydraulic accumulator is defined in terms of maximum
Q.39
A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be __________ cms.
Q.40
Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of
Q.41
For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is
Q.42
The momentum correction factor for the velocity distribution of laminar flow is
Q.43
The dimension of surface tension is
Q.44
With a constant diameter impeller of a centrifugal pump
Q.45
Water hammer in a pipeline results from the
Q.46
Air vessel provided in a reciprocating pump is for
Q.47
In parallel pipe problems, the
Q.48
In turbulent flow, the
Q.49
A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is
Q.50
A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of __________ shape.
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