Top 10 Psychometric Interview Question – 2020!!!

Top 10 Psychometric Interview Question – 2020!!!
In these video we share top 10 Psychometric Interview Question which is very helpful for board viva, exam, sessional viva etc.
After Watching this video a fresher gain knowledge Psychometric.
Following question are details in the video:
Question Number 1: Difference between psychometric and psychometric?
Answer:
The science which deals with the study of behavior of moist air (mixture of dry air and water vapor) is known as Psychometric.
Psychometric:
Psychometric is an instrument which measures both dry bulb temperature and wet bulb temperature.
Question Number 2: What is Psychometric chart?
Answer:
It is the graphical plot with specific humidity and partial pressure of water vapor in y axis and dry bulb temperature along x axis. The specific volume of mixture, wet bulb temperature, relative humidity and enthalpy are the properties appeared in the Psychometric chart
Question Number 3: What are thermodynamic properties?
Answer:
The thermodynamic properties are:
 Pressure
 Temperature
 Volume
 Internal energy
 Enthalpy
 Entropy
 Helmholtz function and
 Gibbs function
Question Number 4: Difference between coefficients of volume expansion and isothermal compressibility?
Answer:
The coefficient of volume expansion is defined as the change in volume with the change in temperature per unit volume.
Isothermal compressibility is defined as the change in volume with change in pressure per unit volume keeping the temperature constant.
Question Number 5: Define Molecular mass?
Answer:
Molecular mass is defined as the ratio between total mass of the mixture to the total number of moles available in the mixture.
Question Number 6: State Dalton’s law of partial pressure?
Answer:
Dalton’s law of partial pressure states that “the pressure of a gas mixture is equal to the sum of pressures of its each components if each component is exerted alone of the temperature and volume of the mixture”.
Question Number 7: What is the significance of compressibility factor?
Answer:
The gases deviate from ideal gas behavior significantly at high pressures and low temperatures. This deviation from ideal gas behavior at a given temperature and pressure can be determined by the introduction of a correction factor called the compressibility factor.
Question Number 8: What is meant by adiabatic mixing?
Answer:
The process of mixing two or more stream of air without any heat transfer to the surrounding is known as adiabatic mixing. It is happened in air conditioning system.
Question Number 9: What is by-pass factor?
Answer:
The ratio of the amount of air which does not contact the cooling coil (amount of bypassing air) to the amount of supply air is called BPF.
Question Number 10: Define Apparatus Dew Point (ADP) of cooling coil?
Answer:
For dehumidification, the cooling coil is to be kept at a mean temperature which is below the dew point temperature of the entering. This temperature of the coil is called ADP Temperature.
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