Question 1
An energy manager reviewing boiler operations notices a gradual increase in stack gas temperature over several months, even though the firing rate and excess air levels have remained consistent. What is the most likely cause of this change?
Correct Answer:
Fouling of heat transfer surfaces inside the boiler.
Question 2
What is the primary purpose of continuous (or surface) blowdown in a boiler system?
Correct Answer:
To control the concentration of Total Dissolved Solids (TDS) in the boiler water.
Question 3
An auditor is inspecting a steam distribution system and suspects a particular steam trap has failed in the open position. Which of the following observations would most strongly confirm this suspicion?
Correct Answer:
A large, continuous plume of live steam is visibly venting from a nearby condensate receiver tank.
Question 4
A boiler's flue gas economizer improves overall system efficiency by performing which of the following functions?
Correct Answer:
Transferring waste heat from the flue gas to the incoming boiler feedwater.
Question 5
Which of the following is a significant negative consequence of having too much excess air in the boiler combustion process?
Correct Answer:
Decreased boiler efficiency due to excess heat being carried up the stack.
Question 1
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About this Exam

Prepare with the Certified Energy Manager (CEM) practice quiz. This question bank includes 130 questions covering energy, motor, manager, primary, and facility. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Certified Energy Manager (CEM)

This practice set contains 130 questions from the matching question bank and focuses on energy, motor, manager, primary, and facility. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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