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Hydraulics interview questions – page 2

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

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  1. What are the characteristics of Control Valve

  2. What is the principale of vortex flow meter.

  3. The advantage of free wheeling diode in a Full Ware rectifier is -reduces the harmonics-Supplies the voltage at negative vlotage

  4. How to estimate the efficiency of a pump?

  5. What is the booster in pneumatic.

  6. How can caliberete the gas volume.

  7. What is the basic working principle of I/P and Positioner in any control valve.

  8. What are the types of clarifier used in water treatement plant?

  9. Which type of motor is suitable for water pump?

  10. What is the difference between application of single acting actuator and double acting actuator

  11. How to overhaul control valves.what are the proper procedures.

  12. PLEASE TELL ME THE BASIC FOR INSTRUMENTATION WHICH IS APPLIED FOR CALIBRATION AND FOR ALL?

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  14. What is viscosity of fluid and what is the viscosity ofgrease and lubricating oil

  15. What is the control valve?how many types of control valves are there

  16. IF THE RANGE FOR FLOW IS -35 TO 125 WHAT WILL BE THE SPAN FOR ABSOLUTE AND FOR NORMAL?

  17. Why we use 0.2 to 1.0 kg/cm2 output in control valve

  18. Give five boiler mounting valves.

  19. HOW TO CALIBRATE TEMPERATURE TRANSMITTER?

  20. What type of pump

  21. Foe selecting control valve if i have the min,normal & maxdata of flow rate,inlet pressure& outlet pressure,inlettem.&density than how can i assure that these data arecorrect,pl. let me know if therew there is any method tocheck it.& also how we assure that the Cv we get from thisdata is suitable for valve for controlling require flow.

  22. What is the function of neck ring in the centrifugalpump?

  23. HOW TO CALIBRATE CAPILLARY TYPE LT?

  24. How can we caliberate interface level troll

  25. I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu

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  27. Safety valve calculation?

  28. Construction of hydro electric power project as per drawing and specification.

  29. What is fluid mechanics

  30. HOW TO CALIBRATE LEVEL TROLL AND HOW TO CONNECT?

  31. What are the differences between pneumatics and hydraulics?

  32. What is mass flow meter principal?

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