Q.1.
What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta?
Q.2.
Two liquids manometer is used for measuring small pressure differences in
Q.3.
Pick out the wrong statement about a streamline.
Q.4.
The equivalent diameter for fluid flow through square cross section channel of side 'x', for pressure drop calculation purpose is given by
Q.5.
Which of the following two quantities when same, makes one pipe system equivalent to another pipe system?
Q.6.
Which of the following quantities are computed by using the hydraulic radius for non-circular ducts?
Q.7.
The ratio of wall drag to total drag in the Stoke's law range is
Q.8.
A venturimeter measures the
Q.9.
Potential function is applicable only for __________ flow.
Q.10.
Drag co-efficient for flow past immersed body is the ratio of __________ to the product of velocity head and density.
Q.11.
The co-efficient of discharge of an orificemeter is a function of
Q.12.
Net positive suction head (NPSH) of a centrifugal pump must be
Q.13.
An ideal fluid is
Q.14.
Sewage sludge is an example of the __________ fluid.
Q.15.
f = 16/NRe, is valid for
Q.16.
A fluid is a substance, that
Q.17.
A fluid is the one, which
Q.18.
A relief valve
Q.19.
A streamline is
Q.20.
A mixed flow centrifugal pump
Q.21.
A Newtonion fluid is that
Q.22.
The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration.
Q.23.
The most serious disadvantage of an orificemeter is that
Q.24.
For a reciprocating pump, the indicator diagram is the graph between the
Q.25.
A floating/submerged body is always stable, if its centre of gravity
Q.26.
The fluid property which matters for fall-ing rain drops to acquire spherical shape is its
Q.27.
Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump.
Q.28.
Mach number is important in a fluid flow problem, when the inertia and __________ forces predominate.
Q.29.
The contraction co-efficient for Borda's mouthpiece (for frictionless fluid) is
Q.30.
In case of venturimeters, friction losses are about __________ percent of maximum velocity head.
Q.31.
The curve of metacentre for a floating body __________ the curve of buoyancy.
Q.32.
At a constant speed of the centrifugal pump . it __________ the impeller diameter.
Q.33.
Slugging occurs in a fluidised bed, if the bed is
Q.34.
A gas
Q.35.
A tube is specified by its
Q.36.
The specific speed of a pump is defined as the speed of a unit of such a size, that it
Q.37.
With increase in the schedule number of a pipe of a particular nominal size, the
Q.38.
A perfect gas
Q.39.
The schedule number of a pipe is an indication of its
Q.40.
Reciprocating pumps are not able to compete with the centrifugal pump for industrial use, mainly because these pumps have
Q.41.
Nominal Pipe Size (NPS) of a pipe less than 12 inches in diameter indicates its
Q.42.
In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas)
Q.43.
Fanning friction factor is equal to(where, fB = Blassius friction factor).
Q.44.
Erosion and pits formation on the impeller of a centrifugal pump may be due to
Q.45.
Check in a centrifugal pump is
Q.46.
Navier-Stokes equation is useful in the analysis of __________ fluid flow problems.
Q.47.
In the Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
Q.48.
Which of the following may be termed as a variable orifice flowmeter?
Q.49.
An isentropic process is the one, in which
Q.50.
Actual lift of a pump is always less than the theoretical lift and is limited by the