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Define-Intercooler. 2 marks best answer

Define-Intercooler. An intercooler is a heat exchanger that functions to remove heat from the air generated by an air compressor. An efficient intercooler will restore the temperature of compressed air to near environmental level. Intercoolers are fitted because of: Reduced air temperature, volume and increased air density for next stage. Increases volumetric efficiency and compressor …

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What is Cavitation in Centrifugal pumps? 2 marks

What is Cavitation in Centrifugal pumps?   Cavitation are the formation of bubbles or cavities in liquid, developed in areas of relatively low pressure around an impellor. The imploding or collapsing of these bubbles triggers intense shockwaves inside the pump, causing significant damage to the impeller and/or the pump housing. If left untreated, pump cavitation …

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What is meant by Emergency bilge suction in E/R? 2 marks

What is meant by Emergency bilge suction in Engine room? ‘Bilge injection system’ is same as ‘direct suction’ referred in SOLAS and is understood to mean ‘Emergency bilge suction’, which is used to discharge overboard large quantities of sea water accumulated in engine room bilges using the main circulating pump or another suitable pump as …

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Stress Raiser

What is stress raiser? Stress raiser occur at abrupt sectional changes of machine parts or members. They are sometimes referred to as notches. Fillets are made in way of abrupt sectional changes to reduce the abruptness of the change in section. What are its effect ? The effect of abrupt changes on the stress pattern …

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