Sunwoda Service Engineer Interview Questions and Answers

Q1. UPS working Principal.
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Q2. How Rectifier & Inverter Section Works.
Ans. 
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
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Q3. What is Harmonics ??
Ans. 
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
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Q1. Basics general questions
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Q2. Why are you looking for change. How much hike are you expecting. Why do you want to change within 6 months of joining a new company in my case. Etc
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Q1. General questions from project and services.
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Q2. 1. What is risk analysis,or have you done in your previous job. 2. What is toughest job or project you handled. 3. What is safety, how would you improve it. 4. Standard of materials being used HVAC PROJECT...read more
Ans. 
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
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Q1. Interview with regional service head
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Q2. Basics question just like HR. Even though it was difficult convince him that I'm looking for a long association with company as I was switching job within 6 months from joining a new company therefore I wa...read more
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Q1. They asked about my current company's work.
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Q1. She wanted to know whether I have done something remarkable in my professional career.
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Q1. Power electronics working principle
Ans. 
Power electronics is the study of electronic circuits used to convert and control electric power.
• Power electronics deals with the conversion of electrical energy from one form to another.

• It involves the use of semiconductor devices such as diodes, transistors, and thyristors.

• Power electronics is used in a wide range of applications such as motor drives, renewable energy systems, and power supplies.

• The working principle...read more
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Q1. Why do you leave the current company
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Major problem resolve

Q1. UPS working Principal.
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Q2. How Rectifier & Inverter Section Works.
Ans. 
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
Answered by AI
Add your answer
Q3. What is Harmonics ??
Ans. 
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
Answered by AI
Add your answer