Micro Labs Senior Executive Interview Questions, Process, and Tips for Experienced

HVAC efficiency can be calculated by dividing the useful output by the total input.

• Calculate the useful output of the HVAC system, such as the amount of heating or cooling provided to the space.

• Determine the total input of the HVAC system, including the energy consumed by the system.

• Divide the useful output by the total input to get the efficiency percentage.

• Efficiency (%) = (Useful Output / Total Input) * 100

• For examp...read more

Filter integrity test is a method to ensure the filter is functioning properly by testing its ability to retain particles of a certain size.

• Filter integrity test is performed to verify the effectiveness of a filter in retaining particles of a specific size.

• Common methods include bubble point test, diffusion test, pressure hold test, and water intrusion test.

• The test results are compared against established acceptance c...read more

Performing PAO test involves measuring the concentration ratio of a substance in a solution.

• Prepare a known concentration of the substance to be tested

• Measure the absorbance of the solution at a specific wavelength using a spectrophotometer

• Plot a standard curve using known concentrations of the substance

• Calculate the concentration of the unknown sample using the standard curve

• Concentration ratio can be calculated by di...read more

ISO 7 particle count refers to the cleanliness level of air in a controlled environment.

• ISO 7 classifies air cleanliness based on the number of particles per cubic meter.

• Lower particle counts indicate cleaner air and higher particle counts indicate more contamination.

• ISO 7 is commonly used in cleanrooms and controlled environments to maintain quality standards.

• Example: ISO 7 particle count may be 10,000 particles per c

DX coil is a type of coil used in air conditioning systems to transfer heat between the indoor and outdoor units.

• DX coil stands for Direct Expansion coil

• It is a key component in air conditioning systems

• DX coils are used to transfer heat between the refrigerant and the air being circulated in the system

• They are commonly found in split air conditioning systems