Related Questions

Drag force acting on a body does not depend upon the
A Density of the fluid
B Density of the body
C Velocity of the body
D Projected area of the body
In which of the following the friction drag is generally larger than pressure drag?
A a circular disc or plate held normal to flow
B a sphere
C a cylinder
D an airfoil
In which of the following body shapes, the pressure drag is large compared to the friction drag?
A Stream line body
B Two dimensional body
C Bluff body
D None of these
The ratio of wall drag to total drag in the Stoke's law range is
A 0.5
B 1
C $$\frac{1}{3}$$
D $$\frac{2}{3}$$
The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is
A 0.5
B 1
C 2
D 0.33
গ্রেডিয়েন্ট মধ্যবিন্দুর অবস্থান নির্ধারণ করা যায়-i. নির্ধারণীসূচক সংখ্যা লিখেii. আইকনটি ডানে বায়ে drag করে iii. মুক্ত টুলের সাহায্যে drag করেনিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
Shell side pressure drop in a shell and tube heat exchanger does not depend upon the
A Baffle spacing & shell diameter
B Tube diameter & pitch
C Viscosity, density & mass velocity of shell side fluid
D None of these
If there are no externally induced flow velocities, then the Nusselt Number (Nu) does not depend upon
A Prandtl number
B Reynolds number
C Grashof Number
D none of the
When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon
A Resistance of the coil
B Motion of the magnet
C Number of turns of the coil
D Pole strength of the magnet
The total frictional resistance to fluid flow does not depend upon the
A Roughness of the surface
B Fluid pressure
C Fluid density
D Fluid velocity

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