Electrical and Electronic Engineering (EEE) Interview Questions

Electrical and Electronic Engineering Interview Questions

1 .

What is the difference between generator and alternator?

Both generator and alternator work on the same principle they convert mechanical energy into electrical energy.

Generator : It converts induced emf (Electro Motive Force) into direct current, where it based on stationary magnetic field and revolving conductor which rolls on the armatures with slip rings and brushes riding against each other.

Alternator : It has rotating magnetic and stationary armature for high voltage and stationary magnetic field and a rotating armature for low voltage

2 .

What do you understand by the RLC current?

RLC stands for Resistor (R), Inductor (which is denoted by L), and Current (C). The word RLC is made of three elements of the circuit which are Resistor (R), Inductor (L), and Current (C). This circuit can provide direct current flowing throughout the circuit.

This ability is characterized by a differential equation of the second order. That's why it is also known as a second-order circuit.

3 .

What do you understand by the term electrical engineering? What are its different applications?

Electrical engineering is a field of engineering that generally deals with the study and application of electricity, electronics, and electromagnetism.

* Electrical engineering generally deals with high voltage, especially AC above the range of 110 or 220V.

* Electrical machines, components, and devices use alternating current (AC) / Voltages and tend to be larger and require 230V (In UK) and 110V (In the US) single-phase ac voltages.

* In industries and power stations, it may require up to 11kV, and for transmission, it may be higher than 400kV.

The different applications of electrical engineering are as follows :

* Electrical Power Systems
* Electrical Control Systems
* Diodes, Rectifiers, and Transformers
* Digital Circuits
* AC and DC Motors
* AC and DC Generators
* Instrumentation Systems
* Communication Systems
* Digital and Analog Electronics etc.

4 .

What are the different colors on wires indicates?

Black wire : This wire is used for power supply in all circuits. Any circuits with this color is considered hot or live. It is never used for a neutral or ground wire.

Red wire : This color wire is a secondary live wire in a 220 volt circuit and used in some types of interconnection. You can join the red wire to another red wire or to a black wire

Blue and Yellow wire : These wires are also used to carry power but are not wiring the outlets for common plug-in electrical devices. They are used for the live wire pulled through the conduct. You will see yellow wire in the fan, structure lights, and switched outlets.

White and Gray : This color wire is used as a neutral wire. It carries the current (unbalanced load) to the ground. You can join white and gray only to other white and gray wires

Green : It is connected to the grounding terminal in an outlet box and run from the outlet box to the ground bus bar within an electric panel

5 .

Define the principle of motors?

The principle of an electric motor is situated on a conductor that carries current and produces a magnetic field surrounding it. The placement of a conductor perpendicular to a magnetic field leads to rotatory movements (known as torque).

6 .

What are the primary responsibilities of an electrical engineer?

The primary responsibilities of an electrical engineer are to create, design, test, and observe the electrical components of a project.

This is a vast field, and projects within this field can vary from manufacturing products to designing power grids. Due to its vast field, the responsibilities can vary from position to position.

The key responsibilities of an electrical engineer are as follows :

* Fixing and troubleshooting electronic devices.
* Conducting the functionality tests.
* Analyzing current trends and information.
* Developing manufacturing processes for building and assembling electrical components etc.

7 .

What are the critical skills required to become an electrical engineer?

The main task of an electrical engineer is to take care of the components of the electrical system. To prevent and troubleshoot such failures, a skilled electrical engineer must do the following things :

* Analyze data to get top trends.
* Communicate clearly with supervisors and clients to get the decision efficiently.
* Keep up to date on emerging trends within the industry.
* Adhere to strict safety codes.
* Work in tandem with supervisors and management.

8 .

What are the fundamental components of electrical circuits?

Following are the fundamental components of electrical circuits :

Active Circuits : Active Circuits are the elements used to generate energy from within their system as a form of source.

Passive Circuits : Passive circuits are the elements that allow the electric current to pass through it and do not generate any energy from it.

AC or DC Circuits : AC stands for Alternating Current, and DC stands for Direct Current. AC always produces some fluctuating current, whereas DC always produces a stable current in a constant source.

Series Circuits : When the electrical components are connected in series within a circuit, it is known as a series circuit.

Parallel Circuits : When the electrical components are connected in parallel within a circuit, it is known as a parallel circuit.

9 .

What are the Different kind of Cables Used for Transmissions?

Cables are categorized into three forms according to its thermal capacity

Low tension cables : Transmits voltage upto 1000 volts

High tension cables : Transmits voltage up to 23000 volts

Super tension cables : Transmits voltage up to 66kv to 132kv

10 .

What is the difference between the term Capacitance and Inductance?

Difference between Capacitance and Inductance :

Capacitance : The term capacitance can be specified as an amount of charge stored inside a capacitor at a specifically given voltage.

Inductance : Inductance is the property of a coil to resist any changes in the electric current flowing through it. Mutual inductance happens when a secondary coil opposes the current change in the primary coil.