Service Executive Interview Questions and Answers for Freshers

Chiller approach can be calculated by subtracting the leaving chilled water temperature from the entering condenser water temperature.

• Calculate the entering condenser water temperature (ECWT)

• Calculate the leaving chilled water temperature (LCWT)

• Subtract ECWT from LCWT to get the chiller approach

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers work on the principle of electromagnetic induction

• They consist of two coils of wire, called primary and secondary, wrapped around a magnetic core

• When an alternating current flows through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil

• Transformers are used to step up or step down voltage lev...read more

Discharge superheat is the temperature difference between the refrigerant's saturation temperature and the actual temperature at the outlet of the compressor.

• Discharge superheat is a critical parameter in refrigeration systems to ensure proper compressor operation.

• It is calculated by subtracting the refrigerant's saturation temperature at the discharge pressure from the actual temperature at the compressor outlet.

• High discharge superheat can indicate issues such as low refrig...read more