Q5. Explain the term “cascade control’ and sketch such a system suitable for use with a main engine jacket cooling water system. Show the variation of pressure and temperature at major points of the system.
Q1.a) Sketch a main engine jacket water cooling system. (8)
b) State Why chemical treatment of such system is necessary. (4)
c) What tests are carried out to ascertain the level of the concentration of the chemicals in the jacket cooling water system. (4)
Q1. Draw cooling water system of main engine and naming each component and describe flow of cooling water through the system. (16)
Q1. Explain with a simple line sketch, a main engine jacket cooling automatic control system capable of maintaining the jacket water temperature within close limits during wide changes in engine load. (16)
Q4. (a) Sketch and describe a central cooling freshwater system for a motor ship. (8)
(b) State the possible causes of corrosion in the closed system described in (a). (4)
(c) Explain how protections against corrosion is provided? (4)
Username or email address *Required
Password *Required
Note: Entering wrong username in the login form will ban your IP address immediately. Entering wrong password multiple times will also ban your IP address temporarily.
Log in
Lost your password? Remember me
No account yet?
