USCG USCG Steam
Set 9 • Question #481 of 496
Launch Interactive Practice Room As the percentage of CO2 in the stack gas decreases, you can assume that __________.
A
the fuel to air ratio is increasing
B
fuel is being burned with increasing economy
C
you are approaching secondary combustion
D
excess air is increasing
✓ Correct Answer
USCG NMC Regulatory Explanation
In USCG Steam Plants (Boilers & Turbines), regarding 'As the percentage of CO2 in the stack gas decreases, you can assume that', the verified engineering fact is: 'excess air is increasing'.
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