Panasonic Electrical Engineer Interview Questions and Answers

MCB stands for Miniature Circuit Breaker. It is a type of electrical protection device that automatically switches off electrical circuits during abnormal conditions.

• MCB is used to protect electrical circuits from overloads and short circuits.

• It is a more convenient and reliable alternative to fuses.

• MCBs come in different ratings to suit different electrical loads.

• They can be easily reset after tripping, unlike fuses w...read more

Mcb is used for safety in both homes and companies. Safety wiring is essential for preventing electrical hazards.

• Mcb (Miniature Circuit Breaker) is used in homes and companies to protect electrical circuits from overloads and short circuits.

• Safety wiring, such as grounding wires and proper insulation, is crucial for preventing electrical shocks and fires.

• Proper installation and maintenance of Mcbs and safety wiring are...read more

Maintenance work often requires the use of various tools and equipment.

• Maintenance work may involve using tools such as screwdrivers, wrenches, pliers, multimeters, and power drills.

• Different tools are used for different tasks, such as testing electrical circuits, tightening bolts, or replacing components.

• Regular maintenance of equipment may require specialized tools specific to the machinery being serviced.

• Proper tool...read more

Maintenance work often involves using electrical equipment such as tap cutters.

• Regularly inspecting and cleaning electrical equipment to ensure proper functioning

• Replacing worn out parts or components as needed

• Testing equipment after maintenance to ensure it is working correctly

• Following safety procedures when working with electrical equipment

• Keeping a record of maintenance work done on each piece of equipment

A solar panel is a device that converts sunlight into electrical energy.

• Made up of photovoltaic cells that absorb sunlight and convert it into direct current (DC) electricity

• DC electricity is then converted into alternating current (AC) electricity through an inverter

• Used to power homes, businesses, and even entire cities

• Can be installed on rooftops, in fields, or even on spacecraft

• Helps reduce reliance on fossil fuels

Compressor in AC is used to compress the refrigerant gas and increase its temperature and pressure.

• Compressor is the heart of an AC system.

• It compresses the low-pressure refrigerant gas into high-pressure gas.

• This high-pressure gas then flows through the condenser where it releases heat and becomes a high-pressure liquid.

• The liquid then flows through the expansion valve where it expands and becomes a low-pressure liqui...read more

Earthing is necessary for all electrical equipments to ensure safety and prevent electrical hazards.

• Earthing provides a path for the fault current to flow safely into the ground.

• It helps in preventing electric shocks by providing a low-resistance path for the current to flow in case of a fault.

• Earthing helps in stabilizing the voltage levels and reducing the risk of electrical fires.

• It protects the equipment from damag...read more

The motor used in a washing machine is typically an induction motor.

• Induction motors are commonly used in washing machines due to their reliability and efficiency.

• These motors work by creating a rotating magnetic field that drives the motion of the washing machine drum.

• They are designed to handle the load and torque requirements of washing machine operations.

• Examples of induction motors used in washing machines include...read more