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)? Constantan Invar Chromel Alumel Constantan Invar Chromel 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 Workpiece Hammer Die with hammer Weight on hammer Workpiece Hammer Die with hammer ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Most of the common metals have __________ crystal structure. Hexagonal Cubic Orthorhombic None of these Hexagonal Cubic Orthorhombic 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 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 Having poor fatigue resistance 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 Alloy steel Lead Cast iron Rubber or ceramic material Alloy steel Lead Cast iron Rubber or ceramic material ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS