Design Engineer - Electrical Interview Questions and Answers in 2025 (100+ Q&A)

Design Engineer - Electrical Personal Questions round

Ques:- How do you consider yourself suitable for this position?

Asked In :-

Right Answer:
I believe I am suitable for this position because I have a strong background in electrical engineering, relevant technical skills, and hands-on experience with design projects. I am also a quick learner, a team player, and passionate about innovative solutions, which aligns well with the goals of your company.

Design Engineer - Electrical Electrical

Ques:- What power factor maintain you maintain at u r organisation

Asked In :- transalta,

Right Answer:
The power factor maintained in our organization is typically around 0.9 to 1.0.

Design Engineer - Electrical Electrical

Ques:- Define the overload capacity of the motor.

Asked In :- landis+gyr,

Right Answer:
The overload capacity of a motor refers to its ability to operate above its rated load for a short period without overheating or sustaining damage. This capacity is typically expressed as a percentage of the motor's rated full-load current and indicates how much extra load the motor can handle temporarily.

Design Engineer - Electrical Electrical

Ques:- How much load with stand the copper cable by sq mm apro..

Asked In :- lec,

Right Answer:
A copper cable can typically carry about 10 amps per square millimeter (A/mm²) for power applications.

Design Engineer - Electrical Electrical

Ques:- How much binding wire is reqd for 1 MT

Asked In :- metrohm,

Right Answer:
Approximately 8 to 10 kg of binding wire is required for 1 MT of reinforcement steel.

Design Engineer - Electrical Personal Questions round

Ques:- WHY YOU CHOOSING THE HR SPELISATION

Asked In :-

Right Answer:
I chose HR specialization because I am passionate about understanding and supporting people in their professional development, fostering a positive work environment, and aligning talent with organizational goals.

Design Engineer - Electrical Electrical

Ques:- Why phase always came one direction in 5pin socket(righthand or left hand) which direction and why……….?

Asked In :- Gardiner & Theobald, Belden, Lumentum Operations, samsung sdi, irving shipbuilding, vision plus, techture structures,

Right Answer:
In a 5-pin socket, the phase wire is typically oriented in a specific direction (usually right-hand) to ensure consistent and safe connections. This standardization helps prevent incorrect wiring and reduces the risk of electrical faults or hazards.

Design Engineer - Electrical Electrical

Ques:- Transformer core are laminated for what purpose?

Asked In :- pantex plant, walton group, mando hella electronics, ise,

Right Answer:
Transformer cores are laminated to reduce eddy current losses.

Design Engineer - Electrical Electrical

Ques:- TELL THE DIFFERENCE OF WELDING TRANSFORMER AND WELDING RECTIFIER AND WELDING INVERT ER AND WHICH PLACE IS USED WHICH TYPE

Asked In :- KSE Electricals, Mumbai Metro One,

Right Answer:
A welding transformer steps down high voltage to low voltage for arc welding, providing a constant current. A welding rectifier converts AC to DC for welding applications, allowing for better control and stability. A welding inverter uses advanced electronics to convert DC to AC and can provide a more efficient and portable solution with adjustable output.

- **Welding Transformer**: Used for basic arc welding (e.g., stick welding).
- **Welding Rectifier**: Used for DC welding processes (e.g., TIG welding).
- **Welding Inverter**: Used for various welding processes, especially in portable applications and where precise control is needed (e.g., MIG and TIG welding).

Design Engineer - Electrical Electrical

Ques:- WHAT IS VFD,FUNCTION, PURPOSE,

Asked In :- HSCL, JK Lakshmi Cement,

Right Answer:
A VFD, or Variable Frequency Drive, is an electronic device that controls the speed and torque of an electric motor by varying the frequency and voltage of the power supplied to the motor. Its purpose is to improve energy efficiency, enhance process control, and reduce mechanical stress on the motor and connected equipment.

Design Engineer - Electrical Electrical

Ques:- What is droop?

Asked In :- faurecia,

Right Answer:
Droop is a control method used in power systems to allow generators to share load by adjusting their output frequency or voltage in response to changes in load, typically expressed as a percentage of the nominal output.

Design Engineer - Electrical Electrical

Ques:- Why HT motors are connected in star.

Asked In :- saipem, makati development corporation, dstl,

Right Answer:
HT (High Tension) motors are connected in star to reduce the starting current and to allow for a higher voltage across the motor windings, which helps in achieving a balanced load and better performance during operation.

Design Engineer - Electrical Personal Questions round

Ques:- Afte done your graduation. how long time you spent. what did you do in this time?

Asked In :-

Right Answer:
After graduation, I spent six months gaining practical experience through internships and working on personal projects to enhance my skills in electrical engineering.

Design Engineer - Electrical Electrical

Ques:- Difference between ac and dc

Asked In :- Virchow Biotech, atlas copco, skydio, iacs,

Right Answer:
AC (Alternating Current) changes direction periodically, while DC (Direct Current) flows in one direction only.

Design Engineer - Electrical Personal Questions round

Ques:- Why u choose MBA after sicence bacground in graduation?

Asked In :- Simpson Strong-Tie Company, iko industries, vision plus, skanska balfour beatty joint venture,

Right Answer:
I chose to pursue an MBA after my science background because I wanted to combine my technical knowledge with business skills. This allows me to understand both the engineering and management aspects of projects, making me more versatile and effective in my career.

Design Engineer - Electrical Electrical

Ques:- Why we r using 4-20ma instead of 0-20ma in instrumentation

Asked In :- CR Asia Group, borgwarner inc., denso,

Right Answer:
We use 4-20 mA instead of 0-20 mA in instrumentation to avoid signal loss and to ensure that a current of 4 mA indicates an active signal, allowing for easier detection of sensor failures or disconnections.

Design Engineer - Electrical Electrical

Ques:- 60 watt bulb and 1500watt iron which device has more resistance & why

Asked In :- GMM Pfaudler, Dxcorr Hardware Technologies, powerlink queensland, continental automotive group,

Right Answer:
The 1500 watt iron has more resistance because it operates at a higher power level, resulting in a lower current for the same voltage compared to the 60 watt bulb.

Design Engineer - Electrical Electrical

Ques:- Why we did not feel electric shock in electric train?

Asked In :- newcrest mining,

Right Answer:
We do not feel an electric shock in an electric train because the train is designed to be insulated from the electrical system, and the current flows through the tracks and not through the passengers. Additionally, the train's body is at the same electrical potential as the tracks, preventing any voltage difference that could cause a shock.

Design Engineer - Electrical Electrical

Ques:- Can Superposition theorem be applied to AC Circuits?CanThevenin's Theorem be applied to AC Circuit too?

Asked In :- paccar,

Right Answer:
Yes, the Superposition theorem can be applied to AC circuits, as long as the circuit elements are linear. Thevenin's theorem can also be applied to AC circuits under the same condition of linearity.

Design Engineer - Electrical Electrical

Ques:- Why we use 110vac in overhead crains? why not 220v, 24v

Asked In :- osg corporation,

Right Answer:
We use 110VAC in overhead cranes primarily for safety reasons, as it reduces the risk of severe electric shock. It also allows for easier integration with control systems and provides sufficient power for the crane's operation while minimizing the risk of electrical hazards.

The Design Engineer – Electrical category on takluu.com is tailored for professionals and aspirants aiming to excel in electrical design roles. Electrical design engineers are responsible for planning, developing, and validating electrical systems for various applications, including power distribution, control systems, and electronics.

This section covers essential topics such as electrical circuit design, schematic diagrams, CAD software (like AutoCAD Electrical), wiring layouts, load calculations, and compliance with standards like IEC and NEC. You’ll also find questions related to design optimization, troubleshooting, protective devices, and safety protocols.

Interview questions often explore practical scenarios, for example:

“How do you approach designing a power distribution system?”
“Explain the use of AutoCAD Electrical in schematic design.”
“What factors do you consider for electrical load calculations?”

Our content presents complex design concepts in a clear and concise manner, supported by real-world examples and best practices. Whether you are fresh in the field or an experienced engineer, this category helps you prepare confidently for technical interviews and project discussions.

At Takluu, we keep this category updated with the latest tools, software advancements, and industry trends, ensuring you stay current and competitive in the electrical design domain.

Questions in: Design Engineer - Electrical

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