ASSSIGNMENT 3
Textbook Assignment: “Boilers,” chapter 4, pages 4-1 through 4-15, and “Steam Turbines,”
chapter 5, pages 5-1 through 5-1.
3-1. What is the function of a boiler in
the steam cycle?
1. To convert water into steam
2. To convert steam into water
3. To convert thermal energy into
chemical energy
4. To convert mechanical energy into
thermal energy
3-2. Which of the following NSTM chapters
contains information on boilers?
1. Chap 079
2. Chap 090
3. Chap 221
4. Chap 554
3-3. What compartment contains the boilers,
the station for firing or operating
the boilers, and the main propulsion
engines?
1. The boiler room
2. The main machinery room
3. The fireroom
4. The boiler operating station
3-4. What term refers to the time during
which the boilers have fires lighted
until the fires are secured?
1. Steam drum pressure
2. Design temperature
3. Superheater outlet pressure
4. Steaming hours
3-5. Boiler overload capacity is usually
what percent of boiler full-power
capacity?
1. 100%
2. 110%
3. 120%
4. 130%
3-6. Which of the following terms refers
to the actual temperature at the
superheater outlet?
1. Design temperature
2. Operating temperature
3. Total heating ’surface temperature
4. Economizer surface temperature
3-7. As far as boilers are concerned, what
is the only distinction between a
drum and a header?
1. Size
2. Color
3. Headers may be entered by a person
4. Drums may not be entered by a
person
3-8. Which of the following components
be found on boilers used onboard
naval ships?
can
1.
2.
3.
4.
Steam and water drums
Generating and circulating tubes
Superheaters and economizers
All of the above
3-9. During normal operation, the water in
the steam drum is kept at
approximately what level?
1. Full
2. 1/2 full
3. 1/3 full
4. 1/4 full
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