Materials and Construction Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)? Chromel Constantan Invar Alumel Chromel Constantan Invar Alumel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction In drop forging process, the forging is done by dropping the __________ at high velocity. Weight on hammer Die with hammer Hammer Workpiece Weight on hammer Die with hammer Hammer Workpiece ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Most of the common metals have __________ crystal structure. Hexagonal Orthorhombic Cubic None of these Hexagonal Orthorhombic Cubic None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. Used for making axle & shafts of aeroplanes, automobiles and locomotives Not helpful in producing cleaner steel due to oxidising action of vanadium Having poor fatigue resistance Having poor toughness Used for making axle & shafts of aeroplanes, automobiles and locomotives Not helpful in producing cleaner steel due to oxidising action of vanadium Having poor fatigue resistance Having poor toughness ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Liners of a ball mill are never made of Cast iron Alloy steel Rubber or ceramic material Lead Cast iron Alloy steel Rubber or ceramic material Lead ANSWER DOWNLOAD EXAMIANS APP
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