Materials and Construction Purity of electrical grade aluminium should be ≥ __________ percent. 85 99.5 95 90 85 99.5 95 90 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction High resistance electrical heating elements/wire are not made of Nimonic alloys Marageing steel Kanthal wire Nichrome Nimonic alloys Marageing steel Kanthal wire Nichrome 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 Not helpful in producing cleaner steel due to oxidising action of vanadium Used for making axle & shafts of aeroplanes, automobiles and locomotives Having poor fatigue resistance Having poor toughness Not helpful in producing cleaner steel due to oxidising action of vanadium Used for making axle & shafts of aeroplanes, automobiles and locomotives Having poor fatigue resistance ANSWER DOWNLOAD EXAMIANS APP
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 Invar Constantan Alumel Chromel Invar Constantan ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Glass lined vessels are not used for handling/storing Dilute H₂SO₄ Dilute HCl Dilute HNO₃ Hydroflouric acid Dilute H₂SO₄ Dilute HCl Dilute HNO₃ Hydroflouric acid ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Coke oven regenerators are made of __________ bricks. Low thermal conductivity Fire clay High electrical conductivity Silica Low thermal conductivity Fire clay High electrical conductivity Silica ANSWER DOWNLOAD EXAMIANS APP
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