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2003 & 1997 Course Process Instrumentation - II

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Total No. of Questions :12] P1083 [Total No. of Pages 2 [3864]-289 B.E. (Instrumentation & Control) PROCESS INSTRUMENTATION - II (1997 & 2003 Course) (406267) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer three questions from Section I and three questions from Section II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Your answers will be valued as a whole. SECTION - I Q1) a) b) c) d) List different types of Heat exchangers. [4] List different process parameters used in it. [4] What do you mean by load on a heat exchanger? [2] Which will be control valve type used in heat exchangers ( for process fluid and heating medium )? state their fail-safe action. [8] OR Q2) a) b) List any four applications of chillers. [8] Draw basic diagram of chiller unit. Clearly show / mention flowing [10] mediums Q3) a) Where are reactors practically used ? Which sensor is most preferred in case of temperature measurement in Reactors? List any two applications of CSTR. [8] Can a CSTR be controlled with a PLC ? Which programming language will be preferred amongst FBD and IL ? What will be limitation of PLC in such case ? [8] b) OR Q4) a) b) How reactor safety is assured with different instruments, explain. [8] How redundancy is important in reactors? In which typical application, redundancy of controller is important for reactor control? Explain. [8] P.T.O. Q5) a) b) Q6) a) b) Enlist different applications where pumps are used; (at least 4). [8] How pump safety can be provided ? Explain with example. OR [8] Which method you will apply for tuning of surge control loop in compressor ? Explain. [8] Enlist various types of compressors. What is the used drain valve? [8] SECTION - II Q7) Enlist any sixteen parameters that are monitored or controlled in a typical Boiler instrumentation system. Do not mention only parameters like: temperature (instead it should be feed water temperature). [16] OR Q8) a) b) What is the importance of air -fuel ratio control in Boiler? Explain with example ? [8] What do you mean by feed forward control of Boiler drum ? What is shrink effect ? [8] Q9) Explain with neat instrumentation diagrams any four important sub loops of distillation column control. [16] OR Q10)a) b) Q11)a) b) Q12)a) b) What is the importance of RG Analysis in distillation column ? How it is [8] used in distillation column control ? What are different constraints in distillation column control. Explain any two. [8] If evaporator control is not be obtained with mathematical modelling ; which are other options available. Is fuzzy control one of them ? Explain in general. [8] Write a short note on Turbodryer or Spraydryer. [10] OR Where are crystalizers used? How its instrumentation is important ; explain. [10] Evaporation is one of the very important process; justify . Draw any one control scheme for the same. [8] zzzz [3864]-289 2

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