Schneider Electric Repair Engineer Interview Questions, Process, and Tips

Basic electrical & Electronics MCQ, Saq .

Q1. What my collage projects with several diagram's.
Ans. 
I completed several college projects with diagrams showcasing my repair engineering skills.
• One project involved designing and repairing a circuit board with detailed diagrams of the components and connections.

• Another project focused on troubleshooting and fixing a malfunctioning electronic device, with before and after diagrams of the repair process.

• I also worked on a project where I analyzed and repaired mechanical sy...read more
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Q2. Basic Components of electrical & electronics and their Diagrams and workings.
Ans. 
Basic components of electrical & electronics include resistors, capacitors, inductors, diodes, transistors, and integrated circuits.
• Resistors: limit current flow

• Capacitors: store and release electrical energy

• Inductors: store energy in a magnetic field

• Diodes: allow current to flow in one direction

• Transistors: amplify or switch electronic signals

• Integrated circuits: contain multiple components on a single chip
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Q3. What is contactor ?
Ans. 
A contactor is an electrical device used to control the flow of electricity in a circuit by opening and closing contacts.
• Contactor is typically used to control motors, lighting, heating, and other electrical loads.

• It consists of a coil, contacts, and an enclosure.

• Contactor contacts can be normally open (NO), normally closed (NC), or changeover.

• Examples of contactor brands include Siemens, Schneider Electric, and ABB.
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Q1. What is Star Delta Connection ? How its Working ?
Ans. 
Star Delta Connection is a method used to connect electric motors for reducing starting current.
• Star Delta Connection involves connecting the motor windings in a star configuration during starting and then switching to a delta configuration once the motor reaches a certain speed.

• It is commonly used in applications where the starting current needs to be limited to prevent damage to the motor or the electrical system.

• Thi...read more
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Q2. Discuss How Tube light working ? Draw the circuit diagram.
Ans. 
A tube light works by passing an electric current through a gas-filled tube, causing the gas to emit light.
• Tube light contains a gas-filled tube with electrodes at each end.

• When electricity is applied, the gas inside the tube becomes ionized and emits ultraviolet light.

• The ultraviolet light then interacts with the phosphor coating on the inside of the tube, producing visible light.

• Circuit diagram includes a ballast to ...read more
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Q3. What is Contactor ? How its working?
Ans. 
A contactor is an electrical device used to control the flow of electricity in a circuit by opening and closing contacts.
• Contactor is typically used in high-power applications to control motors, lighting, heating, and other electrical loads.

• It consists of a coil that when energized creates a magnetic field, pulling in contacts to make or break the circuit.

• Contactor can be controlled manually, automatically, or remotely...read more
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Q4. What is VFD? How its Working ?
Ans. 
VFD stands for Variable Frequency Drive. It is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the motor.
• VFDs are used to control the speed and torque of AC motors in various applications.

• They work by converting fixed frequency and voltage AC power to adjustable frequency and voltage output.

• VFDs can help save energy by matching motor speed to the actual load req...read more
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Q5. Transformer Various types .
Ans. 
Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.
• Transformers can be classified based on their construction (core type, shell type), cooling method (oil-immersed, dry-type), and application (power transformer, distribution transformer).

• Examples include power transformers used in electrical substations, distribution transformers on utility...read more
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