Steam Boilers, Engines, Nozzles and Turbines In a reaction turbine The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades The steam is expanded from a high pressure to a condenser pressure in one or more nozzles The pressure and temperature of steam remains constant The expansion of steam takes place partly in the fixed blades and partly in the moving blades The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades The steam is expanded from a high pressure to a condenser pressure in one or more nozzles The pressure and temperature of steam remains constant The expansion of steam takes place partly in the fixed blades and partly in the moving blades ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In fire tube boilers Water passes through the tubes which are surrounded by flames and hot gases The flames and hot gases pass through the tubes which are surrounded by water Forced circulation takes place None of these Water passes through the tubes which are surrounded by flames and hot gases The flames and hot gases pass through the tubes which are surrounded by water Forced circulation takes place None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The fire tubes in a Cochran boiler usually have _________ diameter. 6.25 mm 92.5 mm 72.5 mm 62.5 mm 6.25 mm 92.5 mm 72.5 mm 62.5 mm ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The aim of a compound steam engine is All of these To reduce the length of stroke To reduce the ratio of expansion in each cylinder To reduce the temperature range in each cylinder All of these To reduce the length of stroke To reduce the ratio of expansion in each cylinder To reduce the temperature range in each cylinder ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diameter of internal flue tubes of a Lancashire boiler is about ___ that of its shell. One-half One-fourth One-third Two-fifth One-half One-fourth One-third Two-fifth ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio (p₂/p₁) is given by (p₂/p₁) = [(n + 1)/2] n - (1/n) (p₂/p₁) = [(n - 1)/2] n + (1/n) (p₂/p₁) = [2/(n - 1)] n/(n + 1) (p₂/p₁) = [2/(n + 1)] n/(n-1) (p₂/p₁) = [(n + 1)/2] n - (1/n) (p₂/p₁) = [(n - 1)/2] n + (1/n) (p₂/p₁) = [2/(n - 1)] n/(n + 1) (p₂/p₁) = [2/(n + 1)] n/(n-1) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS