Interview questions for Electronic Engineer

Electrical Engineering is a branch and discipline of electrical concepts and its applications related to electrical systems, electromagnetic and electronic devices. The different range of sub-areas involved in the area of electrical engineering includes such as electronics, control systems, telecom systems, microelectronic devices, electrical power engineering, electromagnetic power systems, digital signal processing, signals and systems, digital instrumentation, power electronics, material sciences, microwave devices etc. Magnetism and Electricity are the primary concepts and basics of the electrical engineering theory.

Questions that an interviewer might ask an electrical engineer include general questions that deal with your education, background, interests and motivations, behavioural questions that involve specific situations and how you dealt with them, and technical questions that measure your knowledge of theories and concepts.

Interview Questions for Electronic engineer

1. What were your educational experiences?

This being the foremost question, you probably are aware that you need to provide details of your education that includes from higher secondary certification up to your undergraduate and/ or postgraduate certification.

2. How were your academic performances?

There is a need to give or indicate your cumulative grades with the average for all the year together. Besides elaborate on which subjects were of interest and where you had performed well.
Indicating about the various performances would highlight what you excel in and also tell about your experience in that field or subject.

3. What are the basic fundamental components of Electrical circuits?

The below are the different basic components of Electrical Components –
1. Active Circuits: Active Circuits are the elements which can generate energy from within its system as a form of source.
2. Passive Circuits: A passive circuit is the elements which consume or allow the electric current to pass through it and does not generate any energy from it.
3. AC or DC Circuits: AC is Alternating Current and DC is Direct Current. AC will always produce some fluctuating current whereas DC will always produce stable current in the form of constant source.
4. Series or Parallel Circuits: Series Circuits are the circuits where the components are connected in series and the Parallel Circuits are the circuits where the components are connected in parallel.

4. Why star delta starter is preferred with induction motor?

Star delta starter is preferred with induction motor due to following reasons:
• Starting current is reduced 3-4 times of the direct current due to which voltage drops and hence it causes less losses.
• Star delta starter circuit comes in circuit first during starting of motor, which reduces voltage 3 times, that is why current also reduces up to 3 times and hence less motor burning is caused.
• In addition, starting torque is increased and it prevents the damage of motor winding.

5. What are the different types of networks in building an electrical circuit?

This is the basic Electrical Engineering Interview Question asked in an interview. There are two types of electrical circuits called Passive or Active Networks. A Passive network is a network which contains passive elements in its network such as Resistance, Capacitance or Inductance whereas an Active Network is a network which contains active elements in its network such as Current or Voltage Sources.

6. State the difference between generator and alternator?

Generator and alternator are two devices, which converts mechanical energy into electrical energy. Both have the same principle of electromagnetic induction, the only difference is that their construction. Generator persists stationary magnetic field and rotating conductor which rolls on the armature with slip rings and brushes riding against each other, hence it converts the induced emf into dc current for external load whereas an alternator has a stationary armature and rotating magnetic field for high voltages but for low voltage output rotating armature and stationary magnetic field is used.

7. What are the different network terminologies used in building the electrical circuit?

The below terms are used along with the electrical circuits and its applications:
1. Node
2. Junction
3. Loop
4. Mesh
5. Branch
6. Linear and Non-Linear circuits
7. Active and Passive networks

8. Describe about a technical issue which you had to solve?

Explain in detail about the issue and how it started. What were the procedures you had to take, minimizes its risk. Besides you need to elaborate on how did you detect the fault or how did you become part of the work.
Also, tell more on the different aspects that you had to review to find the solution and what steps were taken to implement it. If you had involved a team, do indicate the team’s efforts on how you performed as the leader of the team.

9. What are the different types of coupling mechanisms?

The different types of coupling mechanisms are as below:
1. Conductive Coupling: In conductive coupling power supply will be given simultaneously to both sensor and the load.
2. Inductive Coupling: In Inductive coupling, an electric field is the noise causer.
3. Capacitive Coupling: In Capacitive coupling, a magnetic field is a noise caused in the current flow.

10. Explain advantages of storage batteries?

Few advantages of storage batteries are mentioned below:
• Most efficient form of storing energy portably.
• Stored energy is available immediately because there is no lag of time for delivering the stored energy.
• Reliable source for supply of energy.
• The energy can be drawn at a fairly constant rate.

11. What type of cables is used for transmissions?

As you know that cables are required for transmitting power, give a brief on the various types namely the low tension cables use for transmitting up to 1000V, high tension cables for up to 23000V, and super tension cables that transmit from 66KV to 132KV.