Series OSS                                                                                                                       Code No. 121

                                                                       DAIRY PLANT INSTRUMENTATION 
                                                                                  (Theory) Paper III

Time allowed : 2 hours                                                                                         Maximum Marks : 30

Instructions :   Attempt all questions.

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1. (a) What is a Chilling Centre ? Describe the operations carried out by a chilling centre.    3
    (b) Enlist the important sections and equipment of a rural based dairy plant.    3

 

 
2. What is the principle of cream separation ? Draw a labelled diagram of a cream separator.    5

 

 

3. (a) What are the advantages of a good preventive maintenance programme ?    2
    (b) Enlist boiler accessories and fittings, which ae necessary for safe economical operation.
          Explain any one of the  which you think is the most important.    3

 

 
4. What are the essential features of refrigeration system ? Explain the refrigeration process with the help of a diagram.    5

 

 
5. Draw a labelled diagram of the milking machine and explain its principle.    5

 

 
6. Why is homogenizer used in a dairy plant ? Explain its functioning with the help of a diagram.

    Why is homogenized milk whiter ?    1+2+1