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