Related Questions

In the Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
A Directly proportional to
B Inversely proportional to
C Inversely proportional to the square root of
D Independent of
The fluid forces considered in the Navier Stokes equation are
A gravity, pressure and viscous
B gravity, pressure and turbulent
C pressure, viscous and turbulent
D gravity, viscous and turbulent
Navier-Stokes equation is useful in the analysis of __________ fluid flow problems.
A Non-viscous
B Viscous
C Turbulent
D Rotational
Go and catch the falling star. Here the ‘‘falling’’ is
A an adverb
B a preposition
C an adjective
D a verb
The Navier-Stokes equation deals with the law of conservation of
A Mass
B Energy
C Both A and B
D Momentum
In Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the __________ of its diameter.
A Inverse
B Square root
C Second power
D First power
The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke's law range is proportional to the
A Inverse of fluid viscosity
B Square of particle size
C Difference in the densities of the particle & fluid
D All of the above
A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case,
A The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant
B Both the spheres will emit equal amount of radiation per unit time in the beginning
C Both will absorb equal amount of radiation from the surrounding in the beginning
D Both B & C
For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (d) as
A d
B $$\sqrt {\text{d}} $$
C d2
D $$\frac{1}{{\text{d}}}$$
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a
A D-slide valve
B governor
C Meyer’s expansion valve
D flywheel

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