Materials and Construction Spark plugs are made of High alumina ceramic Corundum Metallic carbides Carborundum High alumina ceramic Corundum Metallic carbides Carborundum ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Nickel as a material of construction Has a body centred cubic (bcc) crystal lattice structure Is paramagnetic below 415° C (its Curie temperature) Is used as an alloying element for both ferrous & non-ferrous alloys Dimagnetic Has a body centred cubic (bcc) crystal lattice structure Is paramagnetic below 415° C (its Curie temperature) Is used as an alloying element for both ferrous & non-ferrous alloys Dimagnetic ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C? Silicone rubber, teflon, procelain and wood Brass, cast iron, mild steel and tin Aluminium, copper, high silicon iron Nickel, monel, stainless steel and graphite Silicone rubber, teflon, procelain and wood Brass, cast iron, mild steel and tin Aluminium, copper, high silicon iron Nickel, monel, stainless steel and graphite ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of 0.3 to 0.5% arsenic in copper increases its Electrical conductivity Ductility Tenacity & hardness Malleability Electrical conductivity Ductility Tenacity & hardness Malleability ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Super conductors are those substances, which Conduct electricity at low temperature Offer no resistance to current flow Conduct electricity at high temperature Offer high resistance to current flow Conduct electricity at low temperature Offer no resistance to current flow Conduct electricity at high temperature Offer high resistance to current flow ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability? Aluminium Lead Copper Wrought iron Aluminium Lead Copper Wrought iron ANSWER DOWNLOAD EXAMIANS APP
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