Electronics and Electrical Engineer Interview Questions and Answers for Freshers

Use MATLAB to simulate a half wave bridge rectifier for analyzing voltage and current behavior.

• Define circuit parameters: Set values for input voltage, load resistance, and diode characteristics.

• Create a time vector: Use 'linspace' or '0:0.001:1' to define the time duration for simulation.

• Model the circuit: Use MATLAB's Simulink or script to represent the rectifier using mathematical equations.

• Run the simulation: Execute the model to observe the output voltage and current wav...read more

PLC is a programmable logic controller used to control industrial processes. Inverter is an electronic device used to control the speed of AC motors.

• PLC is used to automate industrial processes by controlling the input and output signals of machines.

• Inverter is used to control the speed of AC motors by adjusting the frequency of the power supplied to the motor.

• To check PLC input and output, use a multimeter to measure the voltage and current signals.

• To find component faults, ...read more

Ohm's Law relates voltage, current, and resistance in electrical circuits, crucial for designing and troubleshooting systems.

• Ohm's Law states V = I * R, where V is voltage, I is current, and R is resistance.

• In a circuit, if you know two of the three variables, you can calculate the third.

• Example: If a resistor has a resistance of 10 ohms and the current flowing through it is 2 amps, the voltage across it is V = 2A * 10Ω = 20V.

• Ohm's Law is used in designing circuits to ensure ...read more

MATLAB is a high-level programming language and environment for numerical computation, visualization, and programming.

• Data Analysis: MATLAB is used for analyzing large datasets, such as in signal processing or image analysis.

• Simulation: Engineers use MATLAB for simulating dynamic systems, like control systems or electrical circuits.

• Algorithm Development: MATLAB allows for rapid prototyping of algorithms, making it easier to test and refine ideas.

• Visualization: It provides pow...read more

The unit of Watt is a measure of power in the International System of Units (SI).

• Watt is named after James Watt, the inventor of the steam engine.

• It is equivalent to one joule per second.

• Common examples of power usage in watts include light bulbs, appliances, and electronic devices.