TRANSFORMER
Transformer is an electrical instrument that can transfers the electrical energy between two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltage of a alternating current in...
ELECTRICAL TROUBLESHOOTING
1. Alternator shows no voltage
Causes:
Exciter field resistance is too high or there is a
loss of residual magnetism.Short-circuit in excitation circuit probably between
leads to field or alternator slip rings.Insulation of windings is not proper.Fault in...
AUXILIARY ENGINE RUNNING IN OPERATIONS
Running-In Operation
When the engine is started for the first time or immediately after replacement of the parts, such as the cylinder liners and piston, since the sliding parts of the engine are not yet...
HEAT TREATMENT
Heat Treatments
Heat treatments are used to change the physical & mechanical properties of the metal without changing its shape. They are important processes in metal manufacturing which increase required characteristic of the metal, while...
BASIC CONCEPT OF INTELLIGENT ENGINE
central electronic control system is the brain
of the system which monitors and evaluate the general condition to keep the
operating parameter within limits and keep the performance of the engine
better.The intelligent engine provides flexibility in
operation...
INCLINING EXPERIMENT
This experiment is carried out on new ships and those that have had large structural alterations made, to find out the new centre of gravity (kg) and metacentric height (gm) and further to know...
METALLURGY
Ore is heated in furnace with Coke to a temperature of 1800 °C Various reactions at different stages in furnaceC + O2 = CO2 ( at bottom)CO2 + C = 2CO Fe2O3(s) + 3C(s)...
Propeller curve
The propeller with perfect pitch/diameter ratio will be the one whose propeller power curve and engine HP curve meets at maximum RPM. Therefore, a propeller curve is a very much significance for chief engineer
Significance...
Stuffing box
PURPOSE OF STUFFING BOX
Provides sealing between Scavenge space and CrankcaseUpper section prevents scavenge air & residues from scavenge space entering crankcase
Lower section prevents oil carry over by piston rod from crank...