Steam Nozzles and Turbines - Data Intensity 4 Multiple Questions and Answers.




1.Steam turbines may be classified according to
A. direction of steam flow
B. number of stages
C. mode of steam action
D. all of these

2.The process of draining steam from the turbine, at certain points during its expansion and using this steam for heating the feed water in feed water heaters and then supplying it to the boiler is known as
A. regenerative heating
B. reheating of steam
C. bleeding
D. none of these

3.In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be
A. 260 kW
B. 282 kW
C. 296 kW
D. 302 kW

4.In an impulse turbine, steam expands
A. wholly in blades
B. wholly in nozzle
C. partly in the nozzle and partly in blades
D. none of these

5.In a nozzle, the effect of supersaturation is to
A. decrease dryness fraction of steam
B. decrease specific volume of steam
C. increase the entropy
D. increase the heat drop

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