HVAC Engineer Interview 70 Question & Answers

Описание: Q.1) What is the Unit of Heat?
Q.2) What is TON & 1 TON = ?
Q.3) Volume Of Air is measured in?
Q.4) What is ASHRAE?
Q.5) What is the Room Temperature that you maintain in any room?
Q.8) Heat Transfer Coefficient (U):
Q.9) What is CFM
Q.10) What is Aspect Ratio?
Q.11) What is Collar Length?
Q.12) What are the important things to be considered before selecting devices like AHUs and Chillers?
Q.13) What is Pumps supply fittings?
Q.14) What is Pumps return fittings?
Q.15) CFM distribution wrt the given floor plan?
Q.16) Calculating loads wrt any plan by using software.
Q.17) Type of Dampers?
Q.18) Types of motorized damper?
Q.19) Types of grills and diffusers?
Q.20) What is VFD?
Q.21) How do you control or balance the chilled water
Q.22) How do you control the noise or vibration in the duct?
Q.23) Temperature of water at outlet of chiller and inlet of AHU?
Q.24) What are primary pumps and secondary pumps
Q.25) AHU & FCU Valve connection details?
Q.26) What is CFM value?
Q.27) What are the refrigerants used in split unit?
Q.28) What are duct heaters and why do we use them if we already have heating option in AHU?
Q.29) What is VAV and its working?
Q.30) What is 3 way valve and 2 way valve? Where we will use them and why?
Q.31) What is duct gauge normally we use in buildings for cooling and for exhaust ducts?
Q.32) Types of Duct joints?
Q.33) Standard books for HVAC?
Q.34) What is smoke and light test?
Q.35) What are the different method used for duct sizing?
Q.36) How do you measure & control the noise level in A/C system?
Q.37) What are the recommended pressure drop in Chilled water pipes?
Q.38) What are different duct shapes normally used?
Q.39) Where do you use Fire Damper, Splitter Damper & Non Return Damper?
Q.40) What are the different types of exhaust fans used to extract the air?
Q.41) How do you control vibration of AHU & Chillers?
Q.42) What is the difference between VAV & CAV?
Q.43) Mention typical valve arrangement for chiller connection?
Q.44) What do you consider while making plant room layout explain briefly?
Q.45) What are the different type of Louvers used?
Q.46) Classify the different types of chillers?
Q.47) What are the standard test pressure for chilled water piping for Industrial application?
Q.48) What are the Securities checking in chillers?
Q.49) What are the temperature & RH required for human comfort?
Q.50) At what temperature degree Ferhenit & degree Celsius are same?
Q.51) Which gas is used to purge the refrigerant line during the brazing?
Q.53) How much design velocity required in the main duct of an office building?
Q.54) How we install internal insulation in Ducts?
Q.55) Difference between nominal capacity and Actual capacity?
Q.56) Is this nominal capacity equal in every country?
Q.57) How to find Weight of Duct?
Q.58) What are the different materials used for underground chilled water supply?
Q.59) How to find velocity (FPM)?
Q.60) What Is The FCU?
Q.61) What Is The Function Of AHU?
Q.62) What Are The Types Of Air Conditioning Systems?
Q.63) What Does A Hvac Engineer Do?
Q.64) What Is The HVAC System?
Q.65) What Is The Meaning Of Btu In Air Conditioners?
Q.66) What Is Variable Air Volume System & Dual Duct System?
Q.67) What Is Constant Volume System?
Q.68) What Is Centralized Air System?
Q.69) What Is The Meaning Of FAHU?
Q.70) What Is Cfm & Infiltration?

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