IndiaBIX

Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 14
26.
Pick out the correct statement pertaining to the flow through a converging-diverging tube.
The value of Mach number is always unity at the throat.
No shock wave develops in the tube when the Mach number at exit is greater than unity.
Throughout the converging portion of the tube, the density increases in the downstream direction.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Cavitation can be prevented by
suitably designing the pump.
maintaining the suction head sufficiently greater than the vapour pressure.
maintaining suction head = developed head.
maintaining suction head lower than the vapour pressure.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
increase
decrease
remain same
be quadrupled
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Steady flow occurs, when the
conditions change steadily with time.
conditions are the same at the adjacent points at any instant.
conditions do not change with time at any point.
rate of the velocity change is constant.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost
increases
decreases
remains unchanged
increases exponentially
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers