Maharashtra State Board of Technical Education 2012-4th Sem Diploma Chemical Engineering for GroupSubject Plant Utilities (12129) - Question Paper
MSBTE ques. Paper for Chemical Engineering Group
Fourth Semester
Subject Plant Utilities (12129)
Scheme - E
Sample Question Paper
Course Name : Chemical Engineering Group Course Code : CH Semester : Fourth
Subject Title : IMant Utilities Time : 3 Hi's
12129
Marks: 100
Instructions:
1] All questions are compulsory.
2] Illustrate your answer with neat sketches wherever necessary.
3] Figures to the right indicate full marks.
4] Assume Suitable data if necessary.
5] Preferably, write the answers in sequential order.
Q.l (A) Attempt any SIX of the following: 12 Marks
a. What component cause permanent hardness?
b. What are the two indicators of water quality?
c. Define i. Dry saturated steam ii. Superheated steam
d. Define Relative humidity
e. How much is the pressure of blower fan air?
f. What are the sources of water?
g. How thermal iasulators are classified?
h. Differentiate on two points: Fire tube and water tube boilers.
(B) Attempt any TWO of the following: 08 Marks
a. Classify boilers according to the various factors.
b. Describe Mollier's diagram with an outline sketch.
c. Describe preparation of boiler for inspection.
Q.2 Attempt any TWO of the following: 08 Marks
a. List various methods of water softening? Describe any one of them.
b. Describe vapour compression refrigeration cycle.
c. Describe with a neat sketch, the construction and working of water level indicator.
Q.3 Attempt any FOUR of the following: 16 Marks
a. Differentiate between seasible heat and latent heat.
b. Give four characteristics of Refrigerant.
c. Define ton of refrigerant.
d. With help of neat diagram, describe the construction and working of Babcock Wilcox boiler
e. What are selection criteria for refrigerant? mention any four
Q.4 Attempt any FOUR of the following: 16 Marks
a. Describe the working of thermic fluid heater.
b. How instrument air is obtained?
c. Differentiate between I.B.R. and Non I.B.R. boilers
d. Why thermic fluid is used instead of steam in industrial heating operation?
e. With the help of diagram explain the working of reciprocating compressor.
f. What are different types of boiler accessories? Give their names and describe any one in brief.
Q.5 Attempt any FOUR of the following: 16 Marks
a. Give industrial application of refrigeration.
b. Name any four refrigerant used in chemical industry.
c. What are the differences between fan blower and compressor?
d. Describe boiler act w. r. t. (i.) Certificate of renewal (ii) boiler accidents (iii) Transfer of boiler (iv) Boiler repairs.
e. Describe Zeolite process for water softening.
Q.6 Attempt any FOUR of the following: 16 Marks
a. State the mining of coefficient of performance (COP) and write the formula.
b. Calculate the specific enthalpy and specific entropy of 1 Kg. Of steam at 10 C when its dryness factor is 0.8.
c. Describe how Caustic embrittlement is prevented in case of boilers.
d. What is function fusible plug on a boiler? Draw a sketch and describe its working.
e. Draw a neat diagram of a induced draft cooling tower and describe its working.
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