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2003 & 1997 Course Process Instrumentation - II

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Total No. of Questions : 12] P1123 [Total No. of Pages : 2 [3664]-250 B.E. (Instrumentation & Control) PROCESS INSTRUMENTATION - II (1997 & 2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions : 1) Answer any 3 questions from each section. 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. 6) Assume suitable data, if necessary. SECTION - I Q1) a) b) For a typical chiller, you are supposed to configure a industry standard PID controller. Explain controller configuration procedure for the same. Which different parameters you will enter in the controller? [9] Apply instrumentation for a heat exchanger which will implement following equation : [9] Q = k (T2 T1 ) Where Q = change in steam flow rate. Q2) a) b) Q3) a) b) T2 = exit temperature of fluid. T1 = inlet temperature of fluid. k = constant. Draw instrumentation scheme. OR How heat exchangers are classified? Explain any one instrumentation scheme for heat exchanger. [9] What shall be fail-safe actions of the valves used in Chillers and Heatexchangers? Justify your answer. [9] What are difficulties in controlling CSTR? How they are overcome? [8] Compare controlling a CSTR with PLC (Programmable Logic Controller) and a multiloop PID controller. [8] OR P.T.O.

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