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# Previous Year Exam Questions of MECHANICAL MEASUREMENT METROLOGY and RELIABILITY of bput - MMMR by Verified Writer

• MECHANICAL MEASUREMENT METROLOGY and RELIABILITY - MMMR
• 2017
• PYQ
• Biju Patnaik University of Technology Rourkela Odisha - BPUT
• Mechanical Engineering
• B.Tech
• 10682 Views
0 User(s)

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Registration no: Total Number of Pages: 02 B.Tech PCME4403 7th Semester Regular / Back Examination 2017-18 MECHANICAL MEASUREMENT CONTROL BRANCH: Mech Time: 3 Hours Max Marks: 70 Q.CODE: B276 Answer Question No.1 which is compulsory and any five from the rest. The figures in the right hand margin indicate marks. Q1 Answer the following questions: a) What are the stages of measuring system? (2 x 10) b) Define sensitivity in measuring system. c) What is the range of (liquid in glass) thermometer? d) Explain the inverted differential manometer? e) What is the range of diaphragm pressure gage? f) What do you mean by Poles and zeros of control system? g) What are the thermocouple materials used? h) Differences between rise time & settling time of second order control system. i) What is phase margin? j) What is strain rosette? Q2 a) Explain the working principle of Rotameter. b) Describe the working principle of Pirani gauge. (5) (5) Q3 a) Explain the ballast circuit used for strain measurement. (5) b) How temperature compensation is done in strain measurement, explain. Q4 a) Explain the strain gauge pressure cell. b) Explain the working principle of Mc Leod gage. 1 (5) (5) (5)

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Q5 a) Difference between Seeback and Peltier effect b) Explain the optical pyrometer and its constructional features. Q6 a) In a closed loop system, forward gain is K / s (s2+s+1) (s+4) and with (-ve) (5) (5) (5) feedback of 1. What is the range of K, so that the system is stable? b) What is Routh’s stability criterion? Explain Q7 Q8 Find the overall TF of the following system using signal flow graph Write short answer on any TWO: a) Photo emissive transducers (5) (10) (5 x 2) b) LVDT c) Variable inductive transducer for rotary motion. d) CRO 2