Related Questions

In the low Reynolds number region, the drag force on a sphere is proportional to
A V
B V2
C V4
D V0.5
A company produces five types of shirts -- A,B,C,D and E-using cloth of three qualities -- high, medium and low , using dyes of three qualities-- high, medium and low. One shirt requires 1.5 m of cloth .The following table gives respectively : The number of shirts (of each category) produced, in thousands. The percentage distribution of cloth quality in each type of shirt, and The percentage distribution of dye quality in each type of shirt. How many meters of low-quality cloth is consumed?
A 40,00 m
B 60,000 m
C 46,500 m
D 22,500 m
A company produces five types of shirts -- A,B,C,D and E-using cloth of three qualities -- high, medium and low , using dyes of three qualities-- high, medium and low. One shirt requires 1.5 m of cloth .The following table gives respectively : The number of shirts (of each category) produced, in thousands. The percentage distribution of cloth quality in each type of shirt, and The percentage distribution of dye quality in each type of shirt. What is the ratio of low quality dye used for C-type shirts to that used for D-type shirts ?
A 2:3
B 1:2
C 2:1
D 3:2
When the ratio of the Grashoff number and to the square of Reynolds number is one, the dominant mechanism of heat transfer is
A Free convection
B Entry length problem in laminar forced conduction (developing thermal boundary layer)
C Mixed convection (both free and forced)
D Forced convection
The product of Reynolds number and Prandtl number is known as
A Stanton number
B Biot number
C Peclet number
D Grashoff number
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as
A Re0.33
B Re0.53
C Re0.83
D Re
The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to
A N°
B N1
C N2
D N3
With an RS latch a high S and low R sets the output to _____ ; a low S and a high R _____ the output to low.
A No change, set
B Race, high
C high, reset
D set, reset
E None of the above
At high Reynolds number
A Inertial forces control and viscous forces are unimportant
B Viscous forces predominate
C Inertial forces are unimportant and viscous forces control
D None of these
Creeping flow around a sphere is defined, when particle Reynolds number is
A [

A.

B.

B > 2.5

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