Answer / Kamini Jadon

A Marine Engineer is responsible for designing, constructing, and maintaining the mechanical systems onboard ships, including propulsion plants (engines and boilers), electrical power generation, steering gear, refrigeration plants, and other essential equipment. They also supervise crew members and ensure compliance with safety regulations, perform routine maintenance, troubleshoot malfunctions, and manage repairs as needed.

A steel column 3 m hight is of hollow square section, 200 mm outside dimension and 20 mm wall thickness. (young's modules E=210*10^9) calculate A: the compressive load which will give a stress of 60 MN/m^2 in column. B: the compression o the column under the load in (A).

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