Planet Health Senior Service Engineer Interview Questions, Process, and Tips

Ground is a reference point in an electrical circuit, while earthing is the process of connecting the electrical system to the ground to prevent electric shock.

• Ground is a reference point in an electrical circuit, providing a common return path for current.

• Earthing involves connecting the electrical system to the ground to prevent electric shock and ensure safety.

• Grounding is essential for proper functioning of electri...read more

Earthing can be measured using a multimeter to check the resistance between the grounding system and earth.

• Use a multimeter set to the resistance mode

• Connect one probe to the grounding system and the other probe to a known earth point

• Measure the resistance value displayed on the multimeter

• A low resistance value indicates good earthing, while a high value indicates poor earthing

• Repeat the measurement at different points

Active components require a power source to operate, while passive components do not.

• Active components require external power to function, such as transistors and integrated circuits.

• Passive components do not require external power, such as resistors and capacitors.

• Active components can control the flow of electricity, while passive components simply store or dissipate energy.

MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor and IGBT stands for Insulated Gate Bipolar Transistor.

• MOSFET is a type of transistor used for amplifying or switching electronic signals.

• IGBT is a power semiconductor device used for switching high power loads.

• MOSFETs are commonly used in digital circuits, while IGBTs are used in power electronics applications.

• Both MOSFETs and IGBTs have three terminal...read more