Technisys Engineering Site Engineer Interview Questions, Process, and Tips

Types of signals include analog signals, digital signals, and electromagnetic signals.

• Analog signals: continuous signals that vary in amplitude and frequency, such as sound waves

• Digital signals: discrete signals that have only two possible values, such as binary code

• Electromagnetic signals: signals that travel through the air or space, such as radio waves

Digital signals are discrete, quantized representations of analog signals used in digital communication systems.

• Digital signals consist of a series of binary values (0s and 1s).

• They are used in digital devices such as computers, smartphones, and digital cameras.

• Digital signals are more resistant to noise compared to analog signals.

• Examples of digital signals include Ethernet, USB, HDMI, and WiFi signals.

Modbus is a communication protocol used for transmitting information between electronic devices over serial lines.

• Modbus is commonly used in industrial automation for connecting electronic devices such as programmable logic controllers (PLCs) and sensors.

• It is a master-slave protocol, where a master device initiates communication and slave devices respond to requests.

• Modbus messages typically include information such a...read more

Analog signals are continuous signals that vary in amplitude and frequency over time.

• Analog signals can take on any value within a certain range

• They are used in audio transmission, video transmission, and many other applications

• Analog signals are susceptible to noise and distortion

• Examples include sound waves, voltage levels, and temperature readings

S.M.P.S. stands for Switched Mode Power Supply.

• S.M.P.S. is a type of power supply that uses a switching regulator to convert electrical power efficiently.

• It is commonly used in electronic devices such as computers, TVs, and LED lights.

• S.M.P.S. is more efficient and lighter than traditional linear power supplies.

• It provides a stable output voltage regardless of input voltage fluctuations.

A diode is a semiconductor device that allows current to flow in one direction only.

• Semiconductor device

• Allows current flow in one direction

• Commonly used in rectifiers and voltage regulators

A thermocouple is a temperature sensor that consists of two different metals joined together at one end.

• Consists of two different metals joined together at one end

• Generates a voltage proportional to the temperature difference between the two ends

• Commonly used in industrial applications for temperature measurement

• Examples: Type K thermocouple, Type J thermocouple

DI stands for Direct Instruction, a teaching method where the teacher leads the students in learning. AI stands for Artificial Intelligence, the simulation of human intelligence processes by machines.

• DI involves the teacher directly instructing students on the content and skills to be learned.

• AI involves machines performing tasks that typically require human intelligence, such as visual perception, speech recognition, ...read more

A transducer is a device that converts one form of energy into another form.

• Transducers can convert various types of energy such as electrical, mechanical, thermal, or optical.

• Examples of transducers include microphones (sound to electrical), speakers (electrical to sound), and thermocouples (thermal to electrical).