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TCE Technical Interview Questions

Posted on :24-03-2016

Q1. Define the terms reproducibility, repeatability, drift, hysteresis.


Q2. What is the difference between each of them?


Q3. What is sampling theorem? Who gave this?


Q4. What is the basic principle of emf?


Q5. What is the basic fundamental of dp type sensor?


Q6. What is multiplexer?


Q7. What is meant by instrumentation?


Q8. What is meant by extrinsic and intrinsic semiconductor?


Q9. Analog or digital - which one is more accurate?


Q10. What is sample and hold circuit?


Q11. Name a bi-directional flow meter.


Q12. If temperature increases, then what happens to viscosity?


Q13. Cox chart is used in ---- Distillation, evaporation, drying or none of these.


Q14. What is meant by Renolds number?


Q15. The stage below saturation is called?


Q16. Nusselt number is used when ----.


Q17. What is three element control?


Q18. Name a mass flow meter.


Q19. What is meant by CV of a valve?


Q20. What are inherent valve characteristics?


Q21. What is used for the continuous level control of a tank?


Q22. Absolute pressure at sea level is 10 mmhg. What is equivalent in vaccum?


Q23. What is the function of actuator, positioner in a pneumatic control valve?


Q24. What is digital resolution? Why 1/2lsb is important? Why it is used to specify the accuracy of an ADC?


Q25. What are the types of pressure gauges?


Q26. What is the difference between intrinsically safe and explosion proof?


Q27. What is schmitt trigger?


Q28. Why instrumentation and process control is needed?


Q29. Which flow meter does not depend on viscosity changes?


Q30. Throtling process is dependent on which factor?


Q31. What is Hazen-williams coefficient? What are its values?


Q32. Draw Waste water Treatment plant flow sheet.  


Q33. How will you find Dia of water distribution/sewer pipe?  


Q34. What is the output of an excavator? How do you plan machinery?


Q35. What is the difference between enthalpy and internal energy?
 
 
Q36. What are the different types of heat transfer?  


Q37. If DC motor rotates, why not transformer does?


Q38. Explain on/off controller with graph.


Q39. What are the flow characteristics of a valve?


Q40. What is the necessity of sample and hold circuit?


  
   






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