Related Questions

During agitation of liquids, power consumption during laminar flow is not proportional to the
A Density of the liquid
B Viscosity of the liquid
C Cube of impeller diameters
D Square of rotational speed
During agitation of liquids, the
A Froude number is independent for the curves between power number and Reynolds number in baffled system
B Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller
C Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number
D All of the above
Use of baffles in agitators help in minimising the __________ tendency.
A Swirling
B Vortexing
C Both A & B
D Neither A nor B
In the agitators, the power required will be changed with the increase of diameter of agitator (D) as
A D2
B D5
C D
D D9
Which deputed island has been the subject of recent agitation between China and Japan ?
A Senkaku Island
B Kuril Island
C Marshall Island
D Diego Garcia
Read both the statements and then mark your answer.Statement I: The government has recently fixed the fees for professional courses offered by the unaided institutions which are much lower than the fees charged last year.Statement II: The parents of the aspiring students launched a severe agitation last year protesting against the high fees charged by the unaided institutions.
A Statement I is the cause and Statement II is its effect
B Statement II is the cause and Statement I is its effect
C Both the Statement I and II are independent cause
D Both the Statement I and II are independent are effect of some common cause
The random motion of holes and free electrons due to thermal agitation is called ___________
A Diffusion
B Pressure
C Ionisation
D None of the above
Power consumption during turbulent flow in agitation tank is proportional to the __________ of the liquid.
A Viscosity
B Thermal conductivity
C Surface tension
D Density
Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter)
A 0.5 D
B D
C 1.5 D
D 2 D
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)
A 0.5 d
B 0.75 d
C D
D 2 d

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