Materials and Construction Super conductors are those substances, which Conduct electricity at low temperature Offer high resistance to current flow Offer no resistance to current flow Conduct electricity at high temperature Conduct electricity at low temperature Offer high resistance to current flow Offer no resistance to current flow Conduct electricity at high temperature ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of nitrogen in steel Increases its strength Makes it brittle Is desirable Increases its hardness Increases its strength Makes it brittle Is desirable Increases its hardness ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Karbate is An acid resistant material Carbon impregnated with resin (usually bakelite) A mixture of iron dust and saw dust Both B and C An acid resistant material Carbon impregnated with resin (usually bakelite) A mixture of iron dust and saw dust Both B and C ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which metal is protected by the layer of its own oxide? Calcium Aluminium Silver Iron Calcium Aluminium Silver Iron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Pure nickel is Not resistant to oxidation at high temperature Ferromagnetic at room temperature Having h.c.p. crystal lattice Ferromagnetic above its curie point (i.e., 415°C) Not resistant to oxidation at high temperature Ferromagnetic at room temperature Having h.c.p. crystal lattice Ferromagnetic above its curie point (i.e., 415°C) ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Nitriding of steel is a process for Normalising Annealing Spheroidising Case hardening Normalising Annealing Spheroidising Case hardening ANSWER DOWNLOAD EXAMIANS APP
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