Q9) Explain the following:
(a) Control air dryer - working principle with diagram, of any one type of dryer of your choice (8)
(b) Any two types of Ballast water treatment system (8)
Q5. Sketch and describe an independent two-stage air compressor. Draw a set of typical indicator diagrams and insert the various pressures and temperatures. Indicate the effect of a leaking H.P. suction valve and excessive H.P. clearance volume. (16)
Q3. (a) Describe uses of compressed air onboard the ship. (6)
(b) Describe maintenance schedule of various systems on main air compressor. (6)
(c) Describe Isolation procedure of main air compressor before starting any work (4)
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