Steam Boilers, Engines, Nozzles and Turbines In recuperative air preheaters, the heat is transferred From heating an intermediate material and then heating the air from this material Heat is transferred by bleeding some gases from furnace From a metal wall from one medium to another By direct mixing From heating an intermediate material and then heating the air from this material Heat is transferred by bleeding some gases from furnace From a metal wall from one medium to another By direct mixing ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum discharge of steam through a convergent-divergent nozzle depends upon Both (A) and (B) Area of nozzle at throat Initial pressure and volume of steam Final pressure of steam leaving the nozzle Both (A) and (B) Area of nozzle at throat Initial pressure and volume of steam Final pressure of steam leaving the nozzle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has More heating surface Heating surface depends on other parameters Less heating surface Equal heating surface More heating surface Heating surface depends on other parameters Less heating surface Equal heating surface ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A fusible plug is fitted in small boilers in order to Extinguish fire if water level in the boiler falls below alarming limit Avoid explosion Control steam dome Avoid excessive build up of pressure Extinguish fire if water level in the boiler falls below alarming limit Avoid explosion Control steam dome Avoid excessive build up of pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The safety valve at superheater as compared to drum safety valve setting is set at Higher value Lower value Same value Any value Higher value Lower value Same value Any value ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Expanding steam to a very low pressure (high vacuum) in steam engines is Desirable Uneconomical Essential Economical Desirable Uneconomical Essential Economical ANSWER DOWNLOAD EXAMIANS APP
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