HVAC · Practice-Exam-2 · Problem 1PDFSolution in PDF ↓
HVAC · Practice-Exam-2 · Problem 1
Problem & Solution
Video Synthesis
Problem: A plant room contains a generator with a noise level of 95 DBA, an air compressor with a noise level of 88 DBA, and a pump with a noise level of 77 DB...
Approach: So for example, if you have two devices with the same sound level to find the combined sound level we add three decibels.
Key step: In this case, we're just going to focus on the two higher ones because when the difference is 10 decibels or more, that adds nothing to the result.
✅ Answer: C
Office Hours
0
Student questions asked in live office hours about this problem