Steam Boilers, Engines, Nozzles and Turbines Fire tube boilers are limited to a maximum working pressure of 0.17 MN/m² 17 MN/m² 170 MN/m² 1.7 MN/m² 0.17 MN/m² 17 MN/m² 170 MN/m² 1.7 MN/m² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For combustion of a fuel, following is essential Proper ignition temperature All the three above O₂ to support combustion Correct fuel air ratio Proper ignition temperature All the three above O₂ to support combustion Correct fuel air ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine. Four times Twice Equal to Three times Four times Twice Equal to Three times ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An economiser in a boiler Increases steam pressure Decreases fuel consumption Decreases steam pressure Increases steam flow Increases steam pressure Decreases fuel consumption Decreases steam pressure Increases steam flow ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will Remain unaffected Worsen Improve May improve/worsen depending on size Remain unaffected Worsen Improve May improve/worsen depending on size ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum discharge of steam through a convergent-divergent nozzle depends upon Final pressure of steam leaving the nozzle Area of nozzle at throat Both (A) and (B) Initial pressure and volume of steam Final pressure of steam leaving the nozzle Area of nozzle at throat Both (A) and (B) Initial pressure and volume of steam ANSWER DOWNLOAD EXAMIANS APP
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