explain the positive displacement pump?

1 Answers   Ocean Star Ship,

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describe the principal features of a positioner

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How the power has taken from a large marine generator to the msb?

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Explain why self closing sounding pipes are used onboard?

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1) in a ship where do we get the earth is connected to? 2) in a 3 phase supply where does the neutral is connected to in a ship normally? 3) how does we make the best 24v dc wiring for the ship at the bridge panels which mostly work on 24v dc voltage and how do we differentiate its wiring from ac wiring? 4)what is a synchronizer and why do we need it compulsory in a ship? 5) in a blackout condition how does a ship get its back up power?

5 Answers   Ethiopian Maritime, FM, Focus,

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Define velocity ratio?

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What is a motor bike c.c.?

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What is the purpose of o-ring in the centrifugal pumps?

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describe excessive vibration of a machinery that not always apparent? state and explain that the vibration are transmitted from elastic materials or components to another?

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dear all i am a civil engineer (diploma) have 9 years experiance in construction fields and specalised works. (have oil and gas experiance also) i am willing to work in offshore rig jobs? what is the basic qualifications of that job? i need some advice and idea from offshore members? pls post the answers for me sirs. thank you

1 Answers  

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what is the different between gate valve and globe valve?

6 Answers   Navig8, Wallem,

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Find the area of the disc at 62 c whose diameter is 3.4m at zero degrees celsius. Linear coefficient of expansion is .0000118 per degree c.

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