Question 1
Per the International Mechanical Code, what protective control is required on steam and hot-water boilers to shut off the fuel supply if the water level falls below a safe point?
Correct Answer:
A low-water cutoff
Question 2
A closed-loop hydronic heating circuit delivers 80,000 Btu/h with a design water temperature drop of 20°F. Using GPM = Btu/h ÷ (500 × ΔT), what is the required flow?
Correct Answer:
8 gpm
Question 3
In a closed hydronic heating system, where should the circulator be arranged relative to the expansion tank for stable fill pressure?
Correct Answer:
Pump away from the expansion tank, which is the point of no pressure change
Question 4
What is the typical pressure-relief-valve setting on a residential ASME hot-water heating boiler?
Correct Answer:
30 psi
Question 5
Where is an air separator most effective on a hot-water boiler loop?
Correct Answer:
On the boiler supply outlet, where the water is hottest and air is least soluble
Question 1
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About this Exam

Prepare with the MS Mechanical Practice Questions - Mississippi Mechanical Contractor Examination Exam practice quiz. This question bank includes 100 questions covering water, inch, horizontal, minimum, and table. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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MS Mechanical Practice Questions - Mississippi Mechanical Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on water, inch, horizontal, minimum, and table. 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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