To avoid knocking of the engine of a car, certain compounds are added to petrol, which are known as anti-knocking agents. Which one of the following is an anti-knocking agent?A.Ethyl alcoholB.White petrolC. Tetra ethyl leadD.Butane

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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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