10+ Electro Technical Officer Interview Questions and Answers

Fire alarm systems are designed to detect and warn people through visual and audio signals in case of fire.

• Fire alarm systems typically consist of smoke detectors, heat detectors, manual pull stations, and alarm notification appliances.

• The system is designed to automatically detect the presence of smoke or fire and alert occupants of the building.

• Modern fire alarm systems may also include features such as remote monitoring, integration with sprinkler systems, and emergency co...read more

I have experience working with various types of boilers including fire tube boilers, water tube boilers, and electric boilers.

• Fire tube boilers

• Water tube boilers

• Electric boilers

Automatic Voltage Regulator (AVR) is a device that maintains a constant voltage level for electrical equipment by regulating the generator's output voltage.

• AVR monitors the generator's output voltage and adjusts it as needed to maintain a stable voltage level.

• It helps protect electrical equipment from damage due to voltage fluctuations.

• AVRs are commonly used in generators, transformers, and other electrical systems.

• Examples of AVR brands include Stamford, Leroy Somer, and Mec...read more

The three lamp motor method is a technique used to determine the direction of rotation of a three-phase motor.

• The method involves connecting three lamps in a star or delta configuration to the motor windings.

• When the motor is started, the lamps will light up in a specific sequence depending on the direction of rotation.

• By observing the sequence of lamp lighting, the direction of rotation of the motor can be determined.

• This method is commonly used during motor installation or ...read more

VFD Drive stands for Variable Frequency Drive, used to control the speed of an electric motor by varying the frequency and voltage supplied to it.

• Controls the speed of an electric motor by adjusting the frequency and voltage

• Helps in energy savings by matching motor speed to the required load

• Used in various applications like pumps, fans, conveyors, and compressors

SMPS stands for Switched Mode Power Supply, a type of power supply that uses switching devices to convert electrical power efficiently.

• SMPS is more efficient than traditional linear power supplies.

• It uses high-frequency switching to regulate the output voltage.

• Common examples include laptop chargers and LED drivers.

Current is the flow of electric charge through a conductor.

• Current is measured in Amperes (A)

• It is the rate of flow of electric charge

• There are two types of current - AC (Alternating Current) and DC (Direct Current)

• Examples: When you plug in a device, current flows through the wires to power it

Earthing is the process of connecting the metallic parts of an electrical appliance or system to the ground to prevent electric shocks and ensure safety.

• Earthing helps in dissipating excess electrical energy to the ground.

• It provides a path for fault current to flow safely to the ground, preventing damage to equipment and reducing the risk of electric shock.

• Earthing is essential in electrical systems to ensure safety and protect against electrical hazards.

• Examples of earthing...read more

Main components in a Main Switchboard (MSB) include circuit breakers, busbars, fuses, meters, and control switches.

• Circuit breakers: protect electrical circuits from overloads and short circuits

• Busbars: conductors that distribute electrical power within the MSB

• Fuses: protect circuits from overcurrents by melting when the current exceeds a certain level

• Meters: measure electrical parameters such as voltage, current, and power

• Control switches: used to manually control the flow o...read more