Exam (elaborations)
Unit 37 Exam Air Distribution & Balance Questions and Answers 2023
- Course
- Institution
Unit 37 Exam Air Distribution & Balance
[Show more]
Content preview
Unit 37 Exam Air Distribution & BalanceOne reason for using a reducing plenum system is to keep ____. - answer a. the velocity of the air constant
b. the noise level low
c. the duct pressures constant
d. both a and c
Answer : D
By design, which of the following air ducts will allow 250 cfm to flow with a velocity of 500 ft/min? - answer a. 9" ´ 8"
b. 16" ´ 9"
c. 10" ´ 9"
d. none of the above
Answer : A
Technician "A" says that if the air filter on an air-conditioning system is totally blocked with dirt, the amperage draw of the evaporator fan motor will go down. Technician "B" says that if you close down one supply register on a duct system, the volume of air feeding the other locations will increase slightly. Which of the following statements is correct? - answer a. Technician "A" is correct. Technician "B" is correct.
b. Technician "A" is correct. Technician "B" is incorrect.
c. Technician "A" is incorrect. Technician "B" is correct.
d. Technician "A" is incorrect. Technician "B" is incorrect
Answer : A
If the equivalent length of a transition piece of ductwork is 10 feet and the main duct in series with it is 20 feet, what is the length used to estimate the total frictional loss? - answer a. 10 feet
b. 30 feet
c. 60 feet
d. 20 feet
Answer : B
The pressure in a duct system is measured in: - answer a. psig
b. psia
c. " Hg
d. " WC
Answer : D
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller jw638729. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81113 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now