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MEO EXAMS GENERAL ONE WORD ANSWERS


 It is given that engine room bilge pump has suction manifold on which 3 valves are located. One valve for the 3 engine room bilge wells suction, another one for Bilge tank suction and the third one is for sea water suction. It is found that the Bilge pump is unable to take suction from any of the bilge wells, but is able to take suction efficiently from Bilge tank. What is the most probable cause?

Bilge well suction pipeline leaking between individual bilge well valves and suction manifold valve

Which of the following valves cannot prevent backflow of liquid in a pipeline?

Gate valve

Purifier is not rotating with desired rpm, reason?

Friction pads worn out

The most important control measure to prevent boiler tube failure is

Proper maintenance of boiler water condition

Refer cooling tubes act as self-cooling & expansion by

Spring tube

F.O. transfer pump was working efficiently, but it stopped taking suction suddenly. There is a sounding of 6.0 m in the F.O. deep tank. The suction pressure gauge was renewed recently and is showing a positive pressure when pump is running, but Pump is not transferring any F.O. What is
the most probable cause?

Suction filter cover gasket might leaking

Why should combustion blowers left running for while after firing a boiler?

To remove the gases

Dezincification of brass can be prevented by introduction of additives like

Arsenic

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