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. Die with hammer Hammer Weight on hammer Workpiece Die with hammer Hammer Weight on hammer Workpiece ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Most of the common metals have __________ crystal structure. Cubic Orthorhombic Hexagonal None of these Cubic Orthorhombic Hexagonal 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. 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 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 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Liners of a ball mill are never made of Alloy steel Lead Cast iron Rubber or ceramic material Alloy steel Lead Cast iron Rubber or ceramic material ANSWER DOWNLOAD EXAMIANS APP
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