Steam Boilers, Engines, Nozzles and Turbines In a reaction turbine, when steam flows through the fixed blades, Pressure decreases while velocity increases Pressure and velocity both increases Pressure and velocity both decreases Pressure increases while velocity decreases Pressure decreases while velocity increases Pressure and velocity both increases Pressure and velocity both decreases Pressure increases while velocity decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The increase in pressure Reduces its volume Does not affects the boiling point of a liquid Raises the boiling point of a liquid Lowers the boiling point of a liquid Reduces its volume Does not affects the boiling point of a liquid Raises the boiling point of a liquid Lowers the boiling point of a liquid ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines 100% efficiency of a thermal cycle cannot be achieved because of Frictional losses It is not possible to achieve 0°K temperature Leakage Non availability of ideal substance Frictional losses It is not possible to achieve 0°K temperature Leakage Non availability of ideal substance ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour) I.P. = a × m + b I.P. = b × m + a m = (b/I.P.) - a m = a + b × I.P. I.P. = a × m + b I.P. = b × m + a m = (b/I.P.) - a m = a + b × I.P. ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be Choked None of these Under-damping Over-damping Choked None of these Under-damping Over-damping ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The economiser is used in boilers to Extract heat from the exhaust flue gases Economize on fuel Increase thermal efficiency of boiler Increase flue gas temperature Extract heat from the exhaust flue gases Economize on fuel Increase thermal efficiency of boiler Increase flue gas temperature ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS