USCG USCG Steam
Set 4 • Question #318 of 496
Launch Interactive Practice Room Modern fuel oil temperature control devices are regulated to obtain a desired viscosity rather than a specific fuel oil temperature because __________.
A
residual fuel oils have the same viscosity characteristics regardless of where they are refined
B
the temperature of the fuel oil varies with the flow rate through the heater
C
the relationship between temperature and viscosity varies with different fuels
✓ Correct Answer
D
viscosity regulation eliminates the need for close control of the fuel/air ratio
USCG NMC Regulatory Explanation
In USCG Steam Plants (Boilers & Turbines), regarding 'Modern fuel oil temperature control devices are regulated to obtain a desired viscosity rather than a specific fuel oil temperature because', the verified engineering fact is: 'the relationship between temperature and viscosity varies with different fuels'.
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