Q.1
If Blausius or Darcey friction factor is 'f₁' then the Fanning friction factor is equal to
Q.2
Nature of fluid flow during the opening of a valve in a pipeline is
Q.3
The equivalent diameter for pressure drop calculation for a fluid flowing through a rectangular cross-section channels having sides 'x' & 'y' is given by
Q.4
Pick out the wrong statement.
Q.5
Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm.
Q.6
Turbulent flow generally occurs for cases involving
Q.7
Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter 'd'?
Q.8
For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to
Q.9
When a fluid flows over a solid surface, the
Q.10
N. second/m² is
Q.11
Discharge in laminar flow through a pipe varies
Q.12
In the complete turbulence zone (in rough pipes), the
Q.13
The ratio of maximum to average velocity in case of streamline flow between parallel plates is
Q.14
Pick out the wrong statement.
Q.15
Which of the following can be used for the direct measurement of volumetric flow rate of slurry?
Q.16
In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is
Q.17
Minimum porosity for fluidisation is
Q.18
What is the speed of sound (m/sec) in ordinary water?
Q.19
The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids
Q.20
The pressure head of a flow meter remains constant for
Q.21
Existence of boundary layer in fluid flow is because of the
Q.22
Acceleration head in a reciprocating pump
Q.23
The continuity equation in ideal fluid flow states that
Q.24
Baffles in mixing tanks are provided to
Q.25
Deformation drag, which is caused by widespread deformation of fluid around the immersed body
Q.26
For an ideal fluid flow, Reynolds number is
Q.27
For ideally incompressible fluid, the Mach number will be
Q.28
Centrifugal pump can't be used to pump
Q.29
The general relationship between speed N, head H, power P and discharge Q for a centrifugal pump is
Q.30
Which of the following assumptions enables the Euler's equation of motion to be integrated?
Q.31
Flow measurement in an open channel is done by a/an
Q.32
Dean number is concerned with the
Q.33
Ratio of pressure and inertia force gives __________ number.
Q.34
Froude number is not a factor
Q.35
The percentage slip in a reciprocating pump set is given by the % of (where, Q₁ = actual discharge Q₂ = theoretical discharge)
Q.36
What is the shear rate at the pipe wall, in case of laminar flow of Newtonion fluids in a pipe of diameter 'D' & length 'L' incurring a pressure drop 'Δp' with average velocity 'Vavg'?
Q.37
Foot valves provided in pumps are __________ valves.
Q.38
Theoretical head developed by a centrifugal pump does not depend upon the __________ the impeller.
Q.39
The exit cone angle in case of a standard venturimeter is __________ the entrance cone angle.
Q.40
Transition length for a turbulent fluid entering into a pipe is around __________ times the pipe diameter.
Q.41
Gear pump
Q.42
In case of a centrifugal pump, the theoretical head developed is dependent on the __________ the impeller.
Q.43
Power loss in an orificemeter is __________ that in a venturimeter.
Q.44
The terminal velocity of a particle moving through a fluid varies as dpn. The value of n is equal to __________ in Stoke's law regime.
Q.45
Froude number is the ratio of
Q.46
Applicability of Bernoulli's equation is limited to a/an __________ fluid, that does not exchange shaft work with the surroundings.
Q.47
The maximum discharge through a circular channel takes place, when the depth of the fluid flow is __________ times the pipe diameter.
Q.48
Transition length for turbulent flow in smooth pipe is equal to __________ times the pipe diameter.
Q.49
The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.
Q.50
The distance between metacentre and __________ is called metacentric height.
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