Materials and Construction Constantan used in thermocouples is an alloy of Iron & copper None of these Copper & aluminium Lead & tin Iron & copper None of these Copper & aluminium Lead & tin ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following crystal structures characterises the austenitic stainless steel? Face centred cubic Simple hexagonal Body centred cubic None of these Face centred cubic Simple hexagonal Body centred cubic None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Mild steel is A low carbon steel (0.05 to 0.3% carbon) Very poor in strength & ductility Highly resistant to corrosion (as much as stainless steel) A high carbon steel (0.5 to 1.5% carbon) A low carbon steel (0.05 to 0.3% carbon) Very poor in strength & ductility Highly resistant to corrosion (as much as stainless steel) A high carbon steel (0.5 to 1.5% carbon) ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of nitrogen in steel Makes it brittle Increases its strength Is desirable Increases its hardness Makes it brittle Increases its strength Is desirable Increases its hardness ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si) Are used for leaf and coiled springs Is tempered at 850°C Do not have good resilience properties Do not require heat treatment for any of its applications Are used for leaf and coiled springs Is tempered at 850°C Do not have good resilience properties Do not require heat treatment for any of its applications ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction 'Semi steel' is Produced by adding 10-20% steel to the cupola charge Stronger than cast iron Both A & B Neither A nor B Produced by adding 10-20% steel to the cupola charge Stronger than cast iron Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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