Exercise: Steam Nozzles And Turbines

Questions for: Steam Nozzles And Turbines

A steam nozzle converts
A:
heat energy of steam into kinetic energy
B:
kinetic energy into heat energy of steam
C:
heat energy of steam into potential energy
D:
potential energy into heat energy of steam
Answer: A
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The ratio of the energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam is called mechanical efficiency.
A:
Yes
B:
No
C:
D:
Answer: B
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In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
A:
velocity increases
B:
velocity decreases
C:
velocity remains constant
D:
pressure remains constant
Answer: B
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When the nozzle operates with the maximum mass flow, the nozzle is said to be
A:
choked
B:
underdamping
C:
overdamping
D:
none of these
Answer: A
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A stage, in reaction turbine, is represented by
A:
number of casing
B:
number of entries of steam
C:
number of exits of steam
D:
each row of blades
Answer: D
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