× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Other Fields Homework Help Trades and Apprenticeship
New Topic  
nevinjoshy2001 nevinjoshy2001
wrote...
Go to Answer
Posts: 481
Rep: 1 0
6 years ago
In order to reduce duct leakage, ducts should be sealed with _____.
 
  a. mastic
  b. duct tape
  c. electrical tape
  d. paint


[Ques. 2] Which of these devices is used for energy conservation?
 
  a. Humidifier
  b. Electronic air cleaner
  c. Heat recovery ventilator
  d. Chiller


[Ques. 3] Oxygen is never used to purge an HVAC system because _____.
 
  a. oxygen will contaminate the system
  b. an explosion could occur under certain conditions
  c. oxygen contains too much moisture
  d. oxygen is too expensive to use for that purpose


[Ques. 4] The expansion device in a mechanical refrigeration system _____.
 
  a. raises the temperature of the refrigerant
  b. acts as a heat exchanger
  c. provides a pressure drop
  d. raises the pressure of the refrigerant


[Ques. 5] Heat can be transferred from a refrigerant to the outdoors on a hot day because the _____.
 
  a. refrigerant is cooler than the outdoor air
  b. refrigerant is warmer than the outdoor air
  c. refrigerant and the air are at the same temperature
  d. condenser is colder than the evaporator
Read 65 times
2 Replies
Replies
Answer verified by a subject expert
jessikagirljessikagirl
wrote...
#1
Posts: 344
Rep: 4 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

wrote...
#2
6 years ago
Thank you
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1356 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 193
  
 632
  
 308
Your Opinion
Who's your favorite biologist?
Votes: 586
Previous poll results: What percentage of nature vs. nurture dictates human intelligence?