Steam Boilers, Engines, Nozzles and Turbines The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the Blade solidity is 0.65 Blade velocity coefficient is unity Blades are equiangular and frictionless Blades are equiangular Blade solidity is 0.65 Blade velocity coefficient is unity Blades are equiangular and frictionless Blades are equiangular ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The specific volume of steam with increase in pressure decreases Slowly first and then rapidly Rapidly first and then slowly Inversely Linearly Slowly first and then rapidly Rapidly first and then slowly Inversely Linearly ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure at which latent heat of vaporisation of water is zero, is 1 kg/cm² 100 kg/cm² Below atmospheric pressure 225.6 kg/cm² 1 kg/cm² 100 kg/cm² Below atmospheric pressure 225.6 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The shell of the Cochran boiler is made hemispherical Both (A) and (B) To withstand the pressure of steam inside the boiler To give maximum space and strength None of these Both (A) and (B) To withstand the pressure of steam inside the boiler To give maximum space and strength None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Expanding steam to a very low pressure (high vacuum) in steam engines is Economical Desirable Uneconomical Essential Economical Desirable Uneconomical Essential ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as Throttle governing By-pass governing Cut-off governing None of these Throttle governing By-pass governing Cut-off governing None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS