Common Questions

Common Questions Asked in Interviews 1. Draw the temperature control loop of cooling tower 2. What are PID Controller 3. What is the Reynold Number 4. What are standards of Pipes and Tubing 5. What are the types of Cooling towers 6. Importance of Tube Pitch in Shell and Tube Heat exchanger Design 7. What are the basic parameters of heat exchanger design? 8. What is the philosophy of heat exchanger design 9. Name some 6 types of heat exchanger 10. What is lechatlier’s principle 11. What is residence time, space time and space velocity 12. What is importance of order of reaction 13. What are the basic section of furnaces 14. How you will minimize the heat losses of the furnaces 15. Draw the control loop for distillation column temperature control 16. What are proportional controller 17. What is the difference between thermistor and thermocouple 18. What is see back effect 19. What is joule Thomson effect 20. What are the methods of cooling a process stream 21. How fugacity differs from pressure 22. What are four laws of thermodynamics 23. What is effect of feed temperature on centrifugal compressor 24. What is surging? 25. What is net positive suction head 26. How you can avoid cavitation 27. What is the difference between vapour lock, air lock and cavitation 28. Write four alloys composition 29. Why Minimum reflux is calculated? 30. How pressure drop in distillation column calculated

31. How to differentiate the steps for packed column selection and plate 32. How the proportional controller work 33. What are basics types of control loops 34. What is critical radius of insulation 35. What are the design parameters of reactor design 36. How fire occurs? 37. What are types of extinguishers? 38. What are types of Fires? 39. What are various types of valves and their application 40. What are classification of vacuum producing device 41. What are main problems with positive displacement pump? 42. What is autoclave? 43. What is vacuum drawing? 44. What is the importance of impingement plate 45. How to classify boilers 46. Why you want to join a particular organization 47. What is the objective of your life? 48. What is the objective of your professional life 49. What you will do if you get one crore rupees a day 50. What are your hobbies? 51. How you develop the kinetics of a reactor 52. What are effect of temperature and pressure on the kinetics 53. What are various states of water 54. What are the types of reaction 55. what are nusslt number and prandtl number 56. what is distillation 57. what is the importance of transfer unit 58. why there is a temperature control on absorber 59. draw the diagram for a stripper and absorber 60. what are types of adsorber 61. what is the steam economy

62. what meant by multiple effect evaporator 63. what are the various methods to control a variable 64. what is the classification of pumps 65. classify the turbines 66. what are the types of boiler 67. what is difference between relative and absolute humidity 68. how u control the temperature of a reactor 69. name and explain the process of refrigeration 70. why you should be selected? 71. which controller is most effective to control and why? 72. is there any head when there is a suction lift? 73. increasing temperature of the suction increases suction head. Are u agree? 74. increasing suction pressure increases suction head.Are u disagree? 75. why saturated steam preffered for heating media? 76. how you design a heat exchanger. Answer in just one line. 77. what is meant by Chemical Reactor Design 78. What is meant by Mass Transfer 79. What is Fluid mechanics. 80. enumerate types of chemical reaction 81. what are types of absorption? 82. write the steps to make ammonia 83. write the equation of urea manufacturing