Steam Boilers, Engines, Nozzles and Turbines The ratio of the workdone on the blades to the energy supplied to the blades, is called Nozzle efficiency Mechanical efficiency Blading efficiency Gross or stage efficiency Nozzle efficiency Mechanical efficiency Blading efficiency Gross or stage efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The action of steam in a steam turbine is Static and dynamic Neither static nor dynamic Static Dynamic Static and dynamic Neither static nor dynamic Static Dynamic ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The high steam and low water safety valve is used to blow off steam when the Both (A) and (B) None of these Water level in the boiler becomes too low Steam pressure exceeds the working pressure Both (A) and (B) None of these Water level in the boiler becomes too low Steam pressure exceeds the working pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylinder condensation or missing quantity may be reduced by Superheating the steam supplied to the engine cylinder Keeping the expansion ratio small in each cylinder All of these The efficient steam jacketing of the cylinder walls Superheating the steam supplied to the engine cylinder Keeping the expansion ratio small in each cylinder All of these The efficient steam jacketing of the cylinder walls ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The rate of steam produced in Benson boiler is 175 tonnes/h 250 tonnes/h 100 tonnes/h 135 tonnes/h 175 tonnes/h 250 tonnes/h 100 tonnes/h 135 tonnes/h ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be 640/3 m/s 640 m/s 160/3 m/s 320/3 m/s 640/3 m/s 640 m/s 160/3 m/s 320/3 m/s ANSWER DOWNLOAD EXAMIANS APP
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