76.Blowing through of engine?
77.How magnetic flux created in alternator?
78.How does brine ejector work?
79.How do u create vacuum?
80.Pressure made in FWG?
81.Can u use trunk type in 2 stroke and cross head in 4 stroke?
82.OWS principle, pump used?
83.Exhaust temp of one unit is high
85.Centrifugal pp principle.
86.3 phase induction motor?
87.Types of pump?
88.How do u know there is a feed water problem?
89.How does boiler guage glass indicate water level.
90.Difference between single phase and three phase?