Which of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?A.AluminiumB.ChromiumC.NickelD.Tungsten

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consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

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