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

Electrical Site/ Field Engineer - Electrical

Ques:- What is a function of transformer

Asked In :-

Right Answer:
A transformer is used to change the voltage level of electrical energy in an AC circuit, either increasing (step-up transformer) or decreasing (step-down transformer) the voltage while maintaining the same power level.

Electrical Site/ Field Engineer - Electrical

Ques:- Will u describe the step-up and step down transformer?

Asked In :-

Right Answer:
A step-up transformer increases voltage while decreasing current, allowing power to be transmitted over long distances. A step-down transformer decreases voltage while increasing current, making it suitable for use in homes and businesses.

Electrical

Ques:- Related to Electrical Field & about my personal life….

Asked In :- Gecko Robotics, lothian buses, p.e.c.,

Right Answer:
Please provide a specific question related to the electrical field or your personal life for me to answer.

Electrical O&m Engineer - Electrical

Ques:- What is HT cable?

Asked In :- FIAT India Automobiles,

Right Answer:
HT cable, or High Tension cable, is used to transmit electrical power at high voltages, typically above 1 kV, for efficient long-distance power distribution.

Electrical O&m Engineer - Electrical

Ques:- Regarding earthing, pf, why transformers are rated in KVA,

Asked In :- Franke Faber India, forbes marshall,

Right Answer:
Transformers are rated in KVA because their capacity is based on the apparent power (voltage and current) they can handle, regardless of the power factor. This allows for a consistent rating that applies to various loads with different power factors.

Electrical

Ques:- About b.tech final year project and b.tech knowledge

Asked In :-

Right Answer:
In my B.Tech final year project, I focused on [briefly describe your project topic, e.g., "designing a solar-powered irrigation system"]. This project involved [mention key aspects, e.g., "circuit design, programming a microcontroller, and testing the system"]. Throughout my B.Tech, I gained knowledge in areas such as circuit analysis, control systems, and renewable energy technologies, which helped me in successfully completing my project.

Electrical O&m Engineer - Electrical

Ques:- How you control stepper motor.

Asked In :-

Right Answer:
To control a stepper motor, you can use a microcontroller to send pulses to the motor driver. Each pulse moves the motor one step. You can control the speed by adjusting the frequency of the pulses and the direction by changing the sequence of the pulses sent to the motor coils.

Electrical O&m Engineer - Electrical

Ques:- Tell us about switch yard and transmission line.

Asked In :- Worley Parsons,

Right Answer:
A switchyard is a part of an electrical power system where the transmission lines connect to transformers and other equipment. It facilitates the switching, controlling, and protection of electrical power. Transmission lines are high-voltage cables that carry electricity over long distances from power plants to substations, minimizing energy loss. Together, they ensure efficient and reliable delivery of electricity to consumers.

Electrical

Ques:- About electrical practical field

Asked In :-

Right Answer:
The electrical practical field involves hands-on work with electrical systems, including installation, maintenance, troubleshooting, and repair of electrical equipment and circuits. It requires knowledge of safety protocols, electrical codes, and the ability to read schematics and use tools effectively.

Electrical

Ques:- What is the difference between isolators and earth switches?

Asked In :- polycab, cg power solutions, inc.,

Right Answer:
Isolators are devices used to disconnect a circuit from the power supply for maintenance, ensuring safety by providing a visible break in the circuit. Earth switches, on the other hand, are used to connect the circuit to the ground, providing a path for fault currents to safely dissipate into the earth.

Electrical

Ques:- How can you transfer one feeder from one bus to another with out interruption?

Asked In :- landis+gyr, jaguar land rover uk,

Right Answer:
You can transfer one feeder from one bus to another without interruption by using a bus transfer switch or a tie switch. This allows you to connect the feeder to the new bus while keeping it energized, ensuring a seamless transition.

Electrical

Ques:- What do you know about Sf6 transformer.

Asked In :- atkins,

Right Answer:
SF6 transformers are electrical transformers that use sulfur hexafluoride (SF6) gas as an insulating and arc-extinguishing medium. They are known for their high dielectric strength, compact design, and ability to operate in harsh environments, making them suitable for high-voltage applications. SF6 is a non-toxic, inert gas that helps prevent electrical breakdown and enhances safety.

Electrical Fresher

Ques:- Current definition & difference between AC & DC current

Asked In :-

Right Answer:
Current is the flow of electric charge.

The difference between AC (Alternating Current) and DC (Direct Current) is:
- AC changes direction periodically and can vary in voltage, commonly used in homes and industries.
- DC flows in one direction only and has a constant voltage, commonly used in batteries and electronic devices.

Electrical Site/ Field Engineer - Electrical

Ques:- Basics of electrical

Asked In :- Hinduja Tech, schwing stetter india pvt ltd,

Right Answer:
Basics of electrical include understanding voltage, current, resistance, and power. Voltage is the electrical potential difference, current is the flow of electric charge, resistance is the opposition to current flow, and power is the rate at which electrical energy is consumed or produced.

Electrical Site/ Field Engineer - Electrical

Ques:- How many type of sensors

Asked In :- pratt & whitney, rohde & schwarz,

Right Answer:
There are several types of sensors, including:

1. Temperature sensors
2. Pressure sensors
3. Proximity sensors
4. Light sensors
5. Humidity sensors
6. Motion sensors
7. Level sensors
8. Flow sensors
9. Gas sensors
10. Accelerometers

These can be further categorized into analog and digital sensors.

Electrical

Ques:- What is liasoning of electrical

Asked In :- western power,

Right Answer:
Liasoning of electrical refers to the process of coordinating and communicating with various stakeholders, such as utility companies, government authorities, and regulatory bodies, to obtain necessary approvals, permits, and clearances for electrical projects and installations.

Electrical

Ques:- Erection & Commissioning of Turbine

Asked In :-

Right Answer:
Erection and commissioning of a turbine involve the following steps:

1. **Site Preparation**: Ensure the foundation and surrounding area are ready.
2. **Transport**: Safely transport the turbine components to the site.
3. **Assembly**: Assemble the turbine components, including the rotor, stator, and other parts.
4. **Alignment**: Properly align the turbine with the generator and other connected systems.
5. **Electrical Connections**: Connect electrical wiring and control systems.
6. **Testing**: Conduct pre-commissioning tests to check for mechanical and electrical integrity.
7. **Commissioning**: Start the turbine and monitor its performance, ensuring it operates within specified parameters.
8. **Final Adjustments**: Make any necessary adjustments based on performance data.

Complete documentation and safety checks are essential throughout the process.

Draftsman/ Draughtsman - Electrical Electrical

Ques:- What is a bus post insulator? explain its application in a substation.

Asked In :- Mahindra Tractors, SasMos HET Technologies,

Right Answer:
A bus post insulator is a type of electrical insulator used to support and insulate busbars in substations. It prevents electrical current from leaking to the ground while allowing the busbars to remain securely in place. Its application in a substation is to ensure safe and reliable operation by isolating the busbars from the supporting structures, thereby maintaining the integrity of the electrical system.

Design Engineer - Electrical Electrical

Ques:- How to calculate knee point voltage of current transformer?

Asked In :- Pinaka Aerospace Solutions,

Right Answer:
The knee point voltage of a current transformer (CT) can be calculated using the formula:

[ V_k = frac{I_s times R}{sqrt{3}} ]

where ( V_k ) is the knee point voltage, ( I_s ) is the saturation current of the CT, and ( R ) is the burden resistance connected to the CT.

Design Engineer - Electrical Electrical

Ques:- You are given 220 V supply source, four wires, an ammeterand voltmeter. There is no any indication or description onmeters. How will you identify which is ammeter or voltmeter?

Asked In :-

Right Answer:
To identify the ammeter and voltmeter, connect the wires to the 220 V supply.

1. Connect two wires to the voltmeter. If it shows a reading, it is the voltmeter.
2. Connect the remaining two wires to the ammeter. If it shows a reading, it is the ammeter.

The device that shows a reading when connected across the supply is the voltmeter, and the one that shows a reading when connected in series is the ammeter.

The Electrical section on takluu.com is dedicated to students and professionals preparing for electrical engineering roles in industries such as power generation, automation, manufacturing, and construction. This category provides comprehensive coverage of key topics essential for cracking technical interviews and competitive exams.

You will find detailed explanations and practice questions on subjects like basic electrical circuits, AC/DC machines, transformers, power systems, control systems, electrical measurements, and electrical safety. Alongside theory, this section emphasizes practical problem-solving skills including circuit analysis, load calculations, and troubleshooting techniques.

Our content is aligned with common interview requirements for roles such as Electrical Engineer, Maintenance Engineer, Design Engineer, and Electrical Technician. Interview questions cover both conceptual understanding and application-based problems to help you demonstrate your expertise confidently.

In addition to technical topics, we provide insights into industry standards, electrical codes, and emerging technologies like renewable energy systems and smart grids, which are increasingly relevant in modern electrical engineering jobs.

At Takluu, we ensure you receive a balanced mix of theory, practice questions, and real-world scenarios to help you prepare thoroughly. With regular practice, you can enhance your problem-solving speed, technical knowledge, and confidence to excel in your electrical engineering interviews.

Prepare with us and take a step closer to securing your dream job in the electrical engineering domain.

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