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