Furnace Technology In low or standard frequency induction furnace, heat is produced by the Current flow through a heating element Combination of induced current and skin effect Induction and resistance None of these Current flow through a heating element Combination of induced current and skin effect Induction and resistance None of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of All of these Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Combustion of fuel in a furnace with oxygen enriched air results in higher Flue gas volume Fuel consumption Flame temperature Stack loss Flue gas volume Fuel consumption Flame temperature Stack loss ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Low stack loss indicates the Oxygen enrichment of combustion air Use of sub-stoichiometric air for combustion Efficient use of fuel Inefficient use of fuel Oxygen enrichment of combustion air Use of sub-stoichiometric air for combustion Efficient use of fuel Inefficient use of fuel ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner Should be 1:1 for a batch type furnace. Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates Is normally much more for a continuous furnace as compared to a batch furnace Should be 1:1 for a batch type furnace. Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates Is normally much more for a continuous furnace as compared to a batch furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Forced recirculation of furnace gases is practised To ensure uniform temperature In furnaces, operating below 750°C All of these To increase heat transfer by convection To ensure uniform temperature In furnaces, operating below 750°C All of these To increase heat transfer by convection ANSWER DOWNLOAD EXAMIANS APP