Power Engineering 3B1 Chapter 8
Questions with Complete Solutions
(Latest 2025)
A single element feedwater system compensates for
variations in:
a. Level and pressure
b. Shrinkage and swell
c. Level only
d. Pressure only
e. flow only - Correct Answers ✅c
With On - Off boiler feed water control, water is supplied
_____________ to the boiler, either by fully opening or fully
closing a valve in the feedwater line.
a. partially
b. intermittently
c. fully
d. steadily - Correct Answers ✅b
In ______ control, a change in drum level causes a
proportional change in output from the transmitter to
reposition the feedwater control valve to correct the drum
level setpoint.
a. proportional
b. reset
c. feedback
,Power Engineering 3B1 Chapter 8
Questions with Complete Solutions
(Latest 2025)
d. water - Correct Answers ✅c
A rapid increase in boiler load causes an immediate increase
in steam flow from the boiler, which creates a sudden _____ in
the boiler steam drum pressure.
a. drop
b. increase
c. change
d. temperature - Correct Answers ✅a
A sudden increase in load, a decrease in drum pressure, and
an immediate increase in heat release, is called ______.
a. rate
b. swell
c. shrinkage
d. condensing - Correct Answers ✅b
The two-element feedwater control system, is similar to the
single element type, only with a ______ flow transmitter
added.
a. fuel
b. feedwater
c. air
, Power Engineering 3B1 Chapter 8
Questions with Complete Solutions
(Latest 2025)
d. steam - Correct Answers ✅d
A two-element control system may be called a _________
system as it anticipates what will happen to the drum level
with a change in load and acts accordingly to avoid large
level fluctuations.
a. reverse feed
b. feed-forward
c. good
d. smart - Correct Answers ✅b
Two-element system in feedwater regulation will compensate
for:
a. Feedwater pressure and level variations
b. Shrinkage and swell
c. Steam flow variations
d. Level, shrinkage and swell variations
e. level and steam flow variations - Correct Answers ✅d
Shrinkage may be the result of:
1. A reduction in boiler output
2. An increase in firing rate
3. A decrease in firing rate
Questions with Complete Solutions
(Latest 2025)
A single element feedwater system compensates for
variations in:
a. Level and pressure
b. Shrinkage and swell
c. Level only
d. Pressure only
e. flow only - Correct Answers ✅c
With On - Off boiler feed water control, water is supplied
_____________ to the boiler, either by fully opening or fully
closing a valve in the feedwater line.
a. partially
b. intermittently
c. fully
d. steadily - Correct Answers ✅b
In ______ control, a change in drum level causes a
proportional change in output from the transmitter to
reposition the feedwater control valve to correct the drum
level setpoint.
a. proportional
b. reset
c. feedback
,Power Engineering 3B1 Chapter 8
Questions with Complete Solutions
(Latest 2025)
d. water - Correct Answers ✅c
A rapid increase in boiler load causes an immediate increase
in steam flow from the boiler, which creates a sudden _____ in
the boiler steam drum pressure.
a. drop
b. increase
c. change
d. temperature - Correct Answers ✅a
A sudden increase in load, a decrease in drum pressure, and
an immediate increase in heat release, is called ______.
a. rate
b. swell
c. shrinkage
d. condensing - Correct Answers ✅b
The two-element feedwater control system, is similar to the
single element type, only with a ______ flow transmitter
added.
a. fuel
b. feedwater
c. air
, Power Engineering 3B1 Chapter 8
Questions with Complete Solutions
(Latest 2025)
d. steam - Correct Answers ✅d
A two-element control system may be called a _________
system as it anticipates what will happen to the drum level
with a change in load and acts accordingly to avoid large
level fluctuations.
a. reverse feed
b. feed-forward
c. good
d. smart - Correct Answers ✅b
Two-element system in feedwater regulation will compensate
for:
a. Feedwater pressure and level variations
b. Shrinkage and swell
c. Steam flow variations
d. Level, shrinkage and swell variations
e. level and steam flow variations - Correct Answers ✅d
Shrinkage may be the result of:
1. A reduction in boiler output
2. An increase in firing rate
3. A decrease in firing rate
