46.Marpol ann 6?
47.Enthalpy, entropy, latent heat,abs press, guage press, a.c, refrigeration
49.Economizer how will u use exhaust heat?
50.A.c motor working?
52.Diff bn purifier and clarifier?
53.Engine oil, purifier oil is it same?
54.O.w.s max oil content?
56.A.c and dc motor? Where is used?
57.Types of crank shaft?
58.Types of piston?
59.Crank case oil properties.
Ans 60. Combn gasoline n air creating a highly combstble mixture, regulate ratio of air n fule, control engine speed