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 Invar Constantan Alumel Chromel Invar Constantan Alumel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction In drop forging process, the forging is done by dropping the __________ at high velocity. Workpiece Hammer Weight on hammer Die with hammer Workpiece Hammer Weight on hammer Die with hammer ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Most of the common metals have __________ crystal structure. Orthorhombic None of these Cubic Hexagonal Orthorhombic None of these Cubic Hexagonal 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. Not helpful in producing cleaner steel due to oxidising action of vanadium Having poor toughness Used for making axle & shafts of aeroplanes, automobiles and locomotives Having poor fatigue resistance Not helpful in producing cleaner steel due to oxidising action of vanadium Having poor toughness Used for making axle & shafts of aeroplanes, automobiles and locomotives Having poor fatigue resistance ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Liners of a ball mill are never made of Lead Cast iron Alloy steel Rubber or ceramic material Lead Cast iron Alloy steel Rubber or ceramic material ANSWER DOWNLOAD EXAMIANS APP
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