This is the HVAC interview questions and answers/ HVAC Job Interview Part-5/ HVAC questions and answers in Urdu/ Top HVAC interview questions/ HVAC Interview Part-5 / HVAC questions and answers part-5/ HVAC Engineer job interview question video for engineering job searching candidates. In this series of videos, I will explain the job interview questions and answers asked commonly regarding HVAC in a simple way in Urdu/Hindi language. This is basic Heating, Ventilation & Airconditioning (HVAC) information for juniors or beginners as well as senior Engineers, Technical Staff, and hope, this video will be helpful to learn & grow for you. If you found anything which is inappropriate then convey it in the comments for my information and rectification in the future.

Following HVAC questions' answers are explained:
00:00 Introduction
00:30 What is the difference between the VAV & CAV systems and where they are used and for what purpose?
04:38 What is the difference between VRV and VRF?
06:29 Explain Air Movement (Supply and Return Air) and why such movement is designed?
08:30 Which type of air filters are used in operation theater and why?
10:17 Explain Stair Case Pressurization Process and what shall be pressure in the staircase well?

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