Chemical Engineering - Fluid Mechanics

41.
Which of the following must be followed by the flow of a fluid (real or ideal)?
(I) Newton's law of viscosity.
(II) Newton's second law of motion.
(III) The continuity equation.
(IV) Velocity of boundary layer must be zero relative to boundary.
(V) Fluid cannot penetrate a boundary.
I, II, III
II, III, V
I, II, V
II, IV, V
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible ?
< 0.3
> 3
50
1
Answer: Option
Explanation:
No answer description is available. Let's discuss.

43.
Boundary layer exists in flow
of real fluids.
over flat surfaces only.
in pipes only.
of ideal fluids only.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

44.
Rubber latex is an example of __________ fluid.
dilatent
Newtonion
pseudoplastic
Bingham plastic
Answer: Option
Explanation:
No answer description is available. Let's discuss.

45.
Velocity head on sudden enlargement in a horizontal pipe is converted into __________ head.
elevation
pressure
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.