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Top 25 Electrical Engineering Interview Questions and Answers

Electrical engineering is among the most widely practiced engineering fields. Electronics organizations, for example, are always on the lookout for qualified electrical engineers to develop, verify, supervise, and monitor the production of electrical devices. Prior to actually going to an interview, you should prepare a curriculum vitae that highlights your work experience and training, as well as a list of the initiatives you’ve worked on, a list of processes you’ve followed, any certified copies, letters of recommendation, and references, if any.

The electrical engineering interview questions will primarily focus on technical elements, but you should also be prepared for non-technical electrical engineering interview questions. Nowadays, a person’s personality sketch is increasingly crucial for the company’s growth as a whole. Electrical engineering interview questions are difficult to answer because of the field’s diversity. It is beneficial to prepare well so that you do not negatively impact and lose your opportunity. Predict the interviewer to ask you generally behavioral, technical, and fundamental electrical engineering interview questions that measure your knowledge of engineering theories and concepts. Now we will discuss some of these electrical engineering interview questions in some detail:

1. When you say “electrical engineering,” what precisely do you mean? Describe a handful of its applications. [Beginner electrical engineering interview questions]

It is a branch of engineering that deals with the research, design, and implementation of various electronic, electrical, and electromagnetism-based equipment, systems, and equipment. It is used in diodes, electrical power systems, communications networks, digital and analogue systems, communication systems, DC and AC generators, and several other applications.

2. To you, what does the word “electrical engineering” imply? [Frequently asked electrical engineering interview questions]

Electrical Engineering is the branch of engineering that deals with the study of electronics, energy, and electromagnetic and their implementation. It deals with high voltages, typically AC voltages greater than 110 or 220V.

3. When you mention “electric traction,” what precisely do you mean? [intermediate electrical engineering interview questions]

The term “electric traction” refers to a grip system that is powered by electricity. Electric traction refers to electricity for trains, trams, and trolleys, among other things. Magnetic toehold is being employed in projectile trains as well. Dc motors mostly power electric traction systems. 

4. Why is the transformer measured in kVA rather than Kilowatts? [intermediate electrical engineering interview questions]

Manufacturers have no clue what sort of load will be attached to a transformer once they build it. The charge may be resistive (R), inductive (L), capacitive (C), or mixed (M) (R, L, and C). It means that the second (load) side will have a different power factor (p.f). Depending on the load factor, the production of actual Power may vary. As a result, the designer specifies that “this transformer can supply x number of amps at y voltage.” When rating a Transformer, they use VA (voltage x Amperes) rather than W in this method.

5. What is the transformer’s voltage regulation and why is it significant? [advanced electrical engineering interview questions]

The rate of change in the secondary voltage from no load to full load is the voltage regulation. The secondary voltage stays constant throughout the load in an ideal world, resulting in zero voltage regulation. However, it changes in practice depending on the load’s active Power.

6. What is the RLC circuit and how does it work? [basic electrical engineering interview questions]

An RLC circuit has a resistor (R), an inductor (L), and a capacitor (C) that are linked in parallel or series. Because a second-order differential equation can represent every voltage or current in the circuit, it is referred to as a second-order circuit.

7. How do you figure out what size electrical wire you’ll need? [advanced electrical engineering interview questions]

The American Wire Gauge method is used to size wire. The gauge of the wire, the wire capacity, and other factors will influence how you install conductors. In the case of wires, the narrower the wire gauge, the greater the wire’s potential to handle current. Low voltage lights and lamp cables, for instance, will be 18 gauge, while electric heaters will be 20 gauge.

8. What does reverse polarity imply, and how can it be remedied? [advanced electrical engineering interview questions]

When one or more of your receptacles are connected improperly, it is referred to as reverse polarity. Inspect the wire’s outlet connection and your receptacle to repair the reverse polarity. If the white wire is fastened to the hot side and the black wire is attached to the neutral side of a receptacle along with reverse polarity, switch the wires and the problem will be solved. If the problem continues, a qualified electrician will be required.

9. Demonstrate the distinctions amongst “direct Mapped,” “completely Associative,” and “set Associative” caches. [advanced electrical engineering interview questions]

The cache is considered to be directly mapped if each block could only appear in one location in the cache. In most cases, the mapping is modulo. The cache is considered to be completely associative if a block may be stored in there anywhere.

The cache is considered to be set associative if a block may only be stored in a limited number of locations. A set in the cache is a collection of two or more blocks. After a block has been mapped to a set, it may be put anywhere inside the set. Bit selection, or modulo, is commonly used to pick the set. The cache arrangement is known as n-way set associative when there are n blocks in a set.

10. What Is the Motor Principle?

Torque is the turning or twisting movement that occurs when a current carrying conductor is subjected to a magnetic field.

11. Distinction between alternating versus direct current?

In circuits, both of these forms of current flow exist. However, electric charge flows exclusively in one way in direct current. The electric charge in alternating current alternates courses periodically, as the name implies. Direct current, on the other hand, is said to be devoid of a return wire. Thus, alternating current is the more frequent of the pair. On the other hand, direct current offers many benefits, including reduced loss, more extraordinary travel lengths, and cost-effectiveness. Therefore, if you require extra Power, direct current is a good option.

12. What is the definition of the ideal transformer?

A dream transformer where no losses occur is known as an ideal transformer. In other words, the transformer is the transformer’s intake power equal to its output power, implying that both have 100 per cent competence. However, because an actual transformer must have certain losses, it is only a theoretical transformer.

Power of the transformer input Equals Power of the transformer output.

13. What is the purpose of the tube light circuit and how does it work?

A choke is connected to one end of the tube light, and a starter activates the circuit. When a supply is available, the starter will turn off the AC supply cycle. The block will produce about 1000volts because of the sudden change in supply. This volt will be capable of breaking the electrons in the tube and causing electron flow.

14. What is the definition of armature reaction?

The armature response is the consequence of armature flu to strong flow. The armature flow can either support or oppose the main flux.

15. What are the components of transistors?

Transistors are typically made up of a variety of n-type and p-type semiconductors in different permutations.

16. What is a Zener diode, and how does it work?

A Zener diode is a semiconductor diode that allows current to flow in the reverse direction when exposed to enough voltage.

17. What is the transistor’s function in a circuit?

Because the output power of a transistor might be higher than the input power, it is likely to prompt the current.

18. Explain the “frantic effect”?

The output voltage exceeds the input voltage, or the receiving end voltage exceeds the transmitting end voltage.

19. Shed some light on the distinction between unilateral and bilateral connection.

A unilateral connection is one whose characteristics change as the current or voltage passes through it. Changes in the preexisting flow or the addition of voltage have no effect on the characteristics of a bilateral connection.

20. What does insulation voltage in cables signify?

The insulation degree of a wire is defined as the ability of a wire of excellent quality to bear a realistic voltage before fracturing.

21. Explain the distinction between both four-point starter and a three-point stater.

The negative association is given disconnected from the line in a four-point stater, but it is related with a bar in a three-point stater, which may be the negative feature in a three-point stater.

22. Why Do Capacitors Usually Work With AC?

Capacitors usually give dc components infinite resistance (i.e., block the dc components). Thus, it permits the passage of ac components.

23. What exactly are laser diodes?

Laser diodes are two or more electrical lines in a small transistor-like device. When photons restricted to the lasing mode are amplified by stimulated emission, lasing ensues.

24. What happens if the current in the sequence doubles?

The resistance is half when the serial flow is doubled.

25. What is the current in a series circuit if the overall resistance increases?

In a series circuit, if the overall resistance increases, the current will be split in half.


These are some of the most commonly asked electrical engineering interview questions. For people who are preparing for their job interviews, these electrical engineering interview questions are going to prove very beneficial. The top 25 electrical engineering questions shown above are a sample of basic electrical engineering interview questions and answers. There are several approaches to technical questions, but they all depend on the business or sector in which you decide to work. So make sure you have a firm grasp on the fundamentals and have completed a research of the company you want to work with.

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