Sunwoda Service Engineer Interview Questions and Answers

Rectifier converts AC to DC while Inverter converts DC to AC.

• Rectifier section uses diodes to convert AC to DC.

• Inverter section uses transistors to convert DC to AC.

• Rectifier section is used in power supplies while Inverter section is used in UPS.

• Rectifier section is used in welding machines while Inverter section is used in air conditioners.

• Both sections are used in electric vehicles to convert power from battery to m

Harmonics are electrical voltages or currents that are multiples of the fundamental frequency.

• Harmonics can cause problems in electrical systems, such as overheating of equipment and interference with communication systems.

• They are often caused by non-linear loads, such as computers, variable speed drives, and LED lighting.

• Harmonic distortion can be measured using a power quality analyzer.

• Mitigation techniques include ...read more

Risk analysis involves identifying potential risks in a project or job and taking steps to mitigate them.

• Risk analysis involves identifying potential hazards or risks in a project or job.

• It includes assessing the likelihood of these risks occurring and the potential impact they could have.

• Steps are then taken to mitigate or eliminate these risks to ensure the safety of the project and personnel.

• For example, in a previo...read more