Question Paper: Instrument and System Design Question Paper - May 2015 - Instrumentation Engineering (Semester 8) - Mumbai University (MU)
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## Instrument and System Design - May 2015

### MU Instrumentation Engineering (Semester 8)

Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

### Explain any Four:

1 (a) Safety Valve and Rupture disc. 5 marks

1 (b) Pressure Recovery Factor. 5 marks

1 (c) Piping geometry factor. 5 marks

1 (d) Control valve co-efficient and co-efficient of discharge. 5 marks

1 (e) Calibration technique of thermocouple. 5 marks

2 (a) Size the control valve for following data
Fluid = Benzene Flow=450 GPM D=6? schedule 40
P1=80 psia, P2=71 psia, Cd=25, T=52°R, G=0.88.
5 marks

2 (b) Explain IP classification for control panel. 5 marks

3 (a) The following conditions are given with requirement that sound pressure level be below 87dbA
Q=295000 scfh, molecular weight=26.1
P1=60.5 psia, P2=30.25 psia, Temperature = 565°R, k=1.41
Pipe Diameter = 6"SCH 40, valve 4" high performance butterfly valve at following conditions FpCv=199, Fp=1, XTP=0.37=XT.
5 marks

3 (b) Explain the effect of Flashing and remedies to avoid it. 5 marks

4 (a) A 30° butterfly valve is to be operated under following conditions Fluid = water, flow rate = 25000 GPM P1=65 psia P2=49 psia Pv=0.6 psia, Inside diameter = 29.25?. What is the extent of cavitation? 5 marks

4 (b) Explain the effect of Cavitation and remedies to avoid it. 5 marks

5 (a) Design a control valve for following application:
Steam and Water flow at 280°F, Moisture fraction 5 percent, Flow rate W=1600 lb/hr
P1=29.8 psia, P2=19.7 psia, D=3?SCH 40 Vf=0.01700 feet3/lb Vg=13.841 feet3/lb, K=1.32, Cd=12.5, FL=0.86, XT=0.62.
5 marks

5 (b) Explain any two types of control panel in detail. 5 marks

6 (a) Packing and enclosure design guidelines. 5 marks

6 (b) Explain choked flow condition and compressibility factor for Gas flow condition. 5 marks

### Write a short note (Any Two):

7 (a) Grounding and shielding of an electronic product. 5 marks

7 (b) Explain control room layout and its environment. 5 marks

7 (c) Ergonomics. 5 marks

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