Steam Boilers, Engines, Nozzles and Turbines The maximum efficiency of a reaction turbine is 2 cos²α/(1 + cos²α) (1 + cos²α)/2 cos²α 2 sin²α/(1 + sin²α) (1 + sin²α)/2 sin²α 2 cos²α/(1 + cos²α) (1 + cos²α)/2 cos²α 2 sin²α/(1 + sin²α) (1 + sin²α)/2 sin²α ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of injector used in small capacity boilers is to Create vacuum Add make up water in the system Pump water, similar to boiler feed pump Inject chemical solution in feed pump Create vacuum Add make up water in the system Pump water, similar to boiler feed pump Inject chemical solution in feed pump ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The expansion of steam, as it flows over the blades in reaction turbine, represents Throttling process Free expansion process Isentropic process Isothermal process Throttling process Free expansion process Isentropic process Isothermal process ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade. Equal to Greater than Less than None of these Equal to Greater than Less than None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure of reheat steam after passing through reheater compared to inlet condition is Less May be more or less depending on capacity of reheater More Equal Less May be more or less depending on capacity of reheater More Equal ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Lancashire boiler is a Stationary water tube boiler Stationary fire tube boiler Water tube boiler with natural/forced circulation Mobile fire tube boiler Stationary water tube boiler Stationary fire tube boiler Water tube boiler with natural/forced circulation Mobile fire tube boiler ANSWER DOWNLOAD EXAMIANS APP
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