Engineering Materials The toughness of a material __________ when it is heated. Decreases None of these Remain same Increases Decreases None of these Remain same Increases ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of aluminium increases when _________ is added to aluminium. Copper Magnesium Lead and bismuth Silicon Copper Magnesium Lead and bismuth Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Silicon when added to copper improves Hardness Hardness and strength Strength and ductility Machinability Hardness Hardness and strength Strength and ductility Machinability ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Solder is an alloy consisting of Lead and zinc Tin, antimony, copper Tin and lead Tin and copper Lead and zinc Tin, antimony, copper Tin and lead Tin and copper ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The material widely used for making pendulums of clocks is Heat resisting steel Stainless steel High speed steel Nickel steel Heat resisting steel Stainless steel High speed steel Nickel steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Bell metal contains 70% copper and 30% zinc 70 - 75% copper and rest tin 85 - 92% copper and rest tin with little lead and nickel 90% copper and 10% tin 70% copper and 30% zinc 70 - 75% copper and rest tin 85 - 92% copper and rest tin with little lead and nickel 90% copper and 10% tin ANSWER DOWNLOAD EXAMIANS APP