Pressure drag does not depend upon the

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

Pressure drag does not depend upon the

Related Questions