Furnace Technology Regenerators as compared to recuperators for the same duty Are lighter & compact Store smaller quantity of waste heat All of these Involve higher initial cost Are lighter & compact Store smaller quantity of waste heat All of these Involve higher initial cost ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Tunnel kilns are usually used for Roasting of pyrites Reheating of slabs Melting of glass Drying/tempering of refractories Roasting of pyrites Reheating of slabs Melting of glass Drying/tempering of refractories ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner 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 as low as possible i.e., 1 : 2 Should be 1:1 for a batch type furnace. 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 as low as possible i.e., 1 : 2 Should be 1:1 for a batch type furnace. ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following variables affects the furnace capacity? All of these Thickness of heating stock Thermal conductivity of stock Temperature of flue gas All of these Thickness of heating stock Thermal conductivity of stock Temperature of flue gas ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The amount of combustible escaping uncon-sumed from the furnace, depends upon the Burner design (thoroughness of mixing versus stratification) Air supplied and furnace temperature All of these Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction) Burner design (thoroughness of mixing versus stratification) Air supplied and furnace temperature All of these Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction) ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing? Excessive fly ash discharge from the stack Erosion of induced draft fan blades Higher power consumption in its transportation Ash disposal problem Excessive fly ash discharge from the stack Erosion of induced draft fan blades Higher power consumption in its transportation Ash disposal problem ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS