Fluid Mechanics for Chemical Quiz 6

In fluid flow, the stagnation point is defined as a point, where the ______ is zero?

In deriving Bernoulli?s equation, fluid is assumed to be_________?

In a free vortex, the_______?

If the head over the triangular notch is doubled, the discharge will increase by _______ times?

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 ?

In frictional fluid flow, the quantity, (P/?) + (V2/2gc) + gz/gc) is_____?

In case of Venturimeter, friction losses are about ______ percent of maximum velocity head?

If Blasius or Darcy friction factor is ?f1? then the Fanning friction factor is equal to______?

I.D. of 1/4? schedule 40 pipe is 0.364?. I.D. of a 1/2? schedule 40 pipe would be _______ inch?

In case of a centrifugal pump, the theoretical head developed is dependent on the ______ the impeller?

In an incompressible flow of fluid, the fluid _________?

In case of a _____ the energy of flow is considerably decreased downstream of the machine?

In continuous fluidisation__________?

If ?x? is the depth of flow in an open channel of large width, then the hydraulic radius is equal to_________?

Identification of pipelines carrying different liquids and gases is done by the _____ of the pipe?

In case of turbulent flow of fluid through a circular pipe, the ___________?

In a dry packed bed, the pressure drop will be changed by increasing the flow rate as___________?

If the discharge of a centrifugal pump is throttled, then its suction lift_________?

In case of Couette flow, the fluid flow is between two large flat parallel plates with_____?

In case of a Rotameter, the density of the float material is ______ that of the liquid it replaces?

In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes________?

In isotropic turbulence, the ______ are equal to each other?

In magnetic flow meters, voltage generation is_________?

In a fluidised bed reactor_____?

In an incompressible fluid, the density is______?

In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature) ?

In a stabilised soap bubble, pressure inside it compared to external pressure is_________?

If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is__________?

If in a flow field, between any two points, then the flow must be_____?

Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of__________?

In hindered settling, the particles are___________?

In a fully turbulent flow (Re > 105) in a pipe of diameter ?d?, for a constant pressure gradient, the dependence of volumetric flow rate of an incompressible fluid is________?

In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the ______ efficiency?

In fluid flow, cavitation is caused, if the______?

In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)?

In case of a pipe exit fitted with a nozzle, the______?

If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?

In case of laminar flow of fluid through a circular pipe, the___________?

In fluid flow, the boundary layer separation cannot occur_____?

In a/an ______, the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure?

In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of_____?

In laminar flow through a round tube, the discharge varies ________?

In area meter (e.g., Rotameter), with increase in the fluid flow rate, the_____?

In case of end to end connection of two or more pipes in series, the _______ each pipe?

In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ?

In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is_____?

In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure _______ the vapor pressure of the liquid at the suction temperature?

If more than two branches of pipes are to be connected at the same point, then use a/an__________?

In case of centrifugal fan or blower, the gas capacity varies as ___________?

In case of supersonic flow of a fluid through pipeline, the ?Mach number? is___________?