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Hydraulics interview questions

62 questions. Tap “Show answer” to check yourself.

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  1. What is bernoulis theorem and how differantial pressure is related with that?

  2. Types of flow & Reynolds expressions

  3. What is start up vent valve ? why it is used in boiler?

  4. What is difference between total flow and flow rate in general ?? explain it with daily life example.

  5. Difference between Relief valve & pressure reducing valve ? Can we use pressure reducing valve instead of pressure relief valve ?

  6. What is the principal of flow transmeter,level trans meter,presser transmeter?

  7. What is the different between gate valve and globe valve?

  8. What is the hydra step level sensor output value( measuring level of steam drum)

  9. In vortex flow meter how can measure the frequency ofvortex generated by vortex flow meter

  10. EXPLAINE ME WHAT IS ORIFICE?AND HOW WE ARE USING IT IN INSTRUMENTATION

  11. What is pressure,What is temperature,What is flow,What is level

  12. What is Natural frequency of Vibration?. Imagine a circular disk of radius 'r' is oscillating inside a Semi circular ring of radius 'R', how will you find natural frquency of the system?.

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  14. Why cenrifugal pump casing is called involute casing.

  15. WHAT IS THE MASS FLOW FLOW METER

  16. HOW MANY ERROR CALCULATIONS ARE THERE USED IN PROCESS INDUSTRIES?

  17. Distinguish between Viscous and Turbulent flow?

  18. Examples for newtonian and non newtonian fluid

  19. What is coriolis principle for mass flowmeter?

  20. What is the Difference between E/P Positioner and I/P positioner in a control valve? In which applications the respective positioners are used in?

  21. What is the dp across a orifice plate & how much ispermanent pressure across an orifice plate.

  22. What are the instrumental diagram of valve.

  23. What is the purpose of having an inclined portion on the dam site exactly behind the dam opening????

  24. What does a pump develops? Flow or Pressure. Give the Answer with Proper Logic.

  25. What unit is used for measuring comp. outlet flow. it is CFM, M3/hr or NM3/hr. ?

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  27. What is control valve input and out put

  28. For a centrifugal pump if the pump is running and we close the discharge valve what is the effect

  29. What is flow and flowrate?definate and diffrentiate it?pls post a valid ansthanks in advance

  30. How to calculate flow range in DP tx

  31. What is the basic principal of vertax flow meter

  32. What will be the velosity of a water at in the pipe of 6 inches which is situated at the bottom of 10 mtr tank ?

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