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Mechanical Engineering - Steam Nozzles and Turbines

Exercise : Steam Nozzles and Turbines - Section 2
41.
In order to reduce the rotor speed of an impulse turbine, the method employed is
velocity compounding
pressure compounding
pressure-velocity compounding
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The nozzle efficiency is the ratio of
workdone on the blades to the energy supplied to the blades
workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The friction in the nozzle __________ exit velocity of steam.
has no effect on
decreases
increases
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
In a reaction turbine
the steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
the expansion of steam takes place partly in the fixed blades and partly in the moving blades
the steam is expanded from a high pressure to a condenser pressure in one or more nozzles
the pressure and temperature of steam remains constant
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
A stage, in reaction turbine, is represented by
number of casing
number of entries of steam
number of exits of steam
each row of blades
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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