set 10 Marine Engineering Knowledge Motor Epariksha online questions for Marine engineering class 4 online exam

1. In a coil-type auxiliary water-tube circulation boiler
choose one unevaporatedfeedwater collects in the bottom of the flash chamber all generated steam is recirculated through heating coils in the boiler heated water flashes to steam in the boiler heating coils response to steam demand is slower than in a fire-tube boiler

2. For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because
choose one changing filter elements would not interrupt engine operation filtering occurs twice in each pass of oil through the system clogging will not occur dropping pressure is half of that through a single filter unit

3. As per regulations, within how many hours before each departure, satisfactory working of thesteering gear must be checked?
choose one 2 12 24 none of the above

4. Modern 4-stroke medium speed, marine diesel engine exhaust valve spindles are rotated by providing
choose one Nozzle rings Tappet clearance Spinners or vanes Rotocaps

5. If the boiler tubes are scaled on the water side then :-
choose one Heat conduction through the tubes will be very high leading to rapid evaporation The boiler furnace can get damaged due to excessive temperatures The surface of the tube will be overheated as heat transfer is impaired The natural circulation of water within the boiler will be more efficient

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