List of top Instrumentation Engineering Questions on Fluid Mechanics asked in AP PGECET

What is the principle of IR spectroscopy?
Cavitation in a control valve is caused by:
An example of variable area device for measuring flow is:
In a venturimeter, the flow is 0.15 m$^3$/s when the differential pressure is 30 kN/m$^2$. What is the flow when the differential pressure is 60 kN/m$^2$?