Exercise: Steam Nozzles And Turbines

Questions for: Steam Nozzles And Turbines

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
Answer: B
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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
Answer: B
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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
Answer: C
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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
Answer: D
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The maximum discharge of steam through a convergent-divergent nozzle depends upon
A:
area of nozzle at throat
B:
initial pressure and volume of steam
C:
final pressure ofsteam leaving the nozzle
D:
both (a) and (b)
Answer: D
No answer description is available. Let's discuss.
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