2-56. The temperature at which a boiling
2-59. The expansion area of the main steam
liquid and its vapors may exist in
system is that part of the basic
equilibrium contact depends on which
steam cycle in which steam from the
of the following factors?
boilers to the main turbines is
1. The pressure under which the
1. expanded
process takes place
2. cooled
2. The time of day the process takes
3. reversed in direction
place
4. condensed
3. The type of container used to hold
the boiling liquid
2-60. The DFT serves which of the following
4. The percent of humidity in the air
functions?
2-57. Naval boilers produce which of the
following types of steam?
1. Saturated steam
2. Superheated steam
3. Both 1 and 2 above
4. Contaminated steam
2-58. The economizer is positioned on a
boiler to perform what basic function?
1. It removes dissolved oxygen and
noncondensable gases from the
condensate
2. It preheats the water
3. It acts as a reservoir to store
feedwater to take care of
fluctuations in feedwater demand
or condensate supply
4. All of the above
1. It acts as a cooler
2. It reverses the flow of water
3. It acts as a preheater
4. It converts the HP steam into LP
steam
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