Question 435Steam Plants - Assistant Engineer
70% to passIf the DC heater relief valve lifts frequently, the cause can be excessive _______________.
Acondensate supplied to the DC heater
Bfeed water recirculated from the feed pump
Cmakeup feed introduced to the system
Dauxiliary exhaust steam pressure
AI Explanation
The correct answer is D) auxiliary exhaust steam pressure. The frequent lifting of the DC heater relief valve indicates that the pressure in the DC heater is exceeding the set pressure of the relief valve. This excessive pressure can be caused by high auxiliary exhaust steam pressure, which is supplied to the DC heater. The other options (A, B, and C) do not directly cause excessive pressure in the DC heater that would lead to the relief valve lifting frequently.
Related Questions
Q@q.QuestionNumber:The glass used in a flat-type boiler water gage is protected from the hot steam ... Q@q.QuestionNumber:Why should the main steam stop valve of an auxiliary boiler be eased off its sea... Q@q.QuestionNumber:Which of the parts listed for a reaction turbine serve the same function as the ... Q@q.QuestionNumber:Turbine casing flanges are sometimes provided with a system of joint grooving to... Q@q.QuestionNumber:The feed water heater shown in the illustration was designed to maintain the req...
Ready to test your knowledge?
Take a Steam Plants - Assistant Engineer Practice ExamOfficial Resources
Want to practice with timed exams?
Download Coast Guard Exams for the full exam experience.
Get the App