ABB Electrical GET Interview Questions and Answers

Online MCQ round in which basic electronics questions were asked

Q1. Basic electronics, Control system, microcontroller, digital electronics
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Apptitude along core knowledge was tested through online test

Q1. Polychometric questionnaires was asked
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Q1. Personal interview on my core domain
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Q2. Final year project was asked
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Q1. What are power systems?
Ans. 
Power systems are networks of electrical components used to generate, transmit, and distribute electricity.
• Power systems consist of power generation sources such as power plants or renewable energy sources.

• They also include transmission lines to carry electricity over long distances.

• Distribution systems deliver electricity to homes, businesses, and other end users.

• Power systems may also include substations, transformer...read more
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Q2. What are Transformers?
Ans. 
Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.
• Transformers consist of two coils of wire, known as the primary and secondary windings, wrapped around a core made of iron or steel.

• They are used to increase or decrease the voltage of an alternating current (AC) in electrical power applications.

• Examples of transformers include power transf...read more
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Online aptitude test was easy. Questions were asked on electrical only.

Q1. Interview starts from basics of electrical. Questions were centered around generators and transformers. They test your basic electrical knowledge. No cross questioning and all direct questions
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Q2. Types of rotors in generators
Ans. 
Types of rotors in generators include salient pole rotor and cylindrical rotor.
• Salient pole rotor has projecting poles with concentrated windings, used in low-speed applications.

• Cylindrical rotor has distributed windings and is used in high-speed applications.

• Other types include wound rotor and squirrel cage rotor.

• Wound rotor has three-phase windings connected to slip rings, used in variable speed applications.

• Squirrel...read more
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Q3. What is star delta Starter
Ans. 
Star delta starter is a type of reduced voltage starter used for starting high power motors.
• Consists of two contactors - one for star connection and one for delta connection

• Reduces starting current and torque on the motor

• Commonly used in industrial applications for motors above 5 HP
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Q4. What are the types of transformer losses
Ans. 
Types of transformer losses include copper losses, iron losses, and stray losses.
• Copper losses: Also known as I^2R losses, occur in the copper windings of the transformer due to resistance.

• Iron losses: Also known as core losses, occur in the transformer core due to hysteresis and eddy currents.

• Stray losses: Occur due to leakage flux and imperfect magnetic coupling between the windings.

• Examples: An example of copper los...read more
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Q5. Working principle of generator
Ans. 
A generator works on the principle of electromagnetic induction to convert mechanical energy into electrical energy.
• Generators use a magnetic field and a conductor to create a flow of electrons, generating electricity.

• When the conductor moves through the magnetic field, it induces a current in the conductor.

• This current is then collected and transferred through wires to power electrical devices.

• Examples of generators i...read more
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Q1. First Section includes Technical questions
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Q2. Another section was of Aptitude
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Q1. First they will ask you about your projects.
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Q2. Then some basics of the technical subjects that you have already told them you are good at.
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Q1. Your Introduction.
Ans. 
I am a recent graduate with a degree in Electrical Engineering seeking opportunities to apply my knowledge and skills in a professional setting.
• Recent graduate with a degree in Electrical Engineering

• Seeking opportunities to apply knowledge and skills

• Passionate about the field and eager to learn and grow
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Q2. They will ask you about why you have chosen this field or branch and why you want to join within this industry, to be sure of your clear vision for the particular field you have chosen.
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Q1. SWITCHGEAR and protection
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Normal apptitude test

Q1. What is Power system
Ans. 
Power system is a network of electrical components used to generate, transmit, and distribute electricity.
• Power system includes power generation plants, transmission lines, substations, and distribution networks.

• It ensures electricity is efficiently produced and delivered to consumers.

• Examples of power systems include the electrical grid in a city or a solar power system for a home.
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Q2. What type of conductor use in transmission line
Ans. 
Copper and aluminum conductors are commonly used in transmission lines.
• Copper conductors have high conductivity and are often used in high voltage transmission lines.

• Aluminum conductors are lighter and cheaper, making them suitable for long distance transmission lines.

• Composite conductors, such as Aluminum Conductor Steel Reinforced (ACSR), are also used for their strength and conductivity.
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Q1. Introduction of yourself
Ans. 
I am a recent graduate with a degree in Electrical Engineering, passionate about renewable energy and power systems.
• Graduated with a Bachelor's degree in Electrical Engineering

• Interested in renewable energy and power systems

• Completed internships at XYZ Company and ABC Corporation
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Q2. When you join the company, what thing you have done 1st
Ans. 
The first thing I would do when joining the company is familiarize myself with the company's policies and procedures.
• Review employee handbook and company policies

• Attend orientation and training sessions

• Meet with team members and supervisors to understand expectations
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Q1. Stress strain curve
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