100+ Electrical GET Interview Questions and Answers

Methods to reduce harmonics in induction motor include using passive filters, active filters, and multi-pulse converters.

• Use passive filters such as LC filters to reduce harmonics in induction motor

• Utilize active filters like active power filters to eliminate harmonics

• Implement multi-pulse converters such as 12-pulse or 24-pulse converters to reduce harmonics

• Ensure proper grounding and shielding to minimize harmonics

Transportation and logistics play a crucial role in the market by ensuring efficient movement of goods and services.

• Transportation helps in connecting producers with consumers by moving goods from one place to another.

• Logistics involves the coordination of resources and processes to ensure timely delivery of products.

• Efficient transportation and logistics can lead to cost savings and improved customer satisfaction.

• Examples: Amazon's efficient delivery network, FedEx's global ...read more

Yes, I am willing to relocate to any corner of India for the job.

• I am open to relocating for the right opportunity

• I have no geographical restrictions for my career growth

• I am adaptable and willing to embrace new environments

A ground and motorized circuit breaker diagram includes components like ground connection, motorized mechanism, and control circuit.

• Ground connection is typically represented by a symbol resembling three horizontal lines connected to a point.

• Motorized circuit breaker includes a motorized mechanism for opening and closing the circuit.

• Control circuit is used to operate the motorized mechanism of the circuit breaker.

• Example: Ground symbol connected to the ground terminal, motori...read more

Synchronous motors have constant speed and require external excitation, while induction motors have variable speed and are self-starting.

• Synchronous motors have a constant speed determined by the frequency of the power supply.

• Induction motors have variable speed depending on the load.

• Synchronous motors require external excitation to generate a magnetic field, while induction motors are self-starting.

• Synchronous motors are used in applications where constant speed is required,...read more

BS4 engines comply with Bharat Stage 4 emission norms, while BS6 engines comply with Bharat Stage 6 emission norms.

• BS4 engines have higher emissions of pollutants like NOx and PM compared to BS6 engines

• BS6 engines have advanced emission control technologies like Selective Catalytic Reduction (SCR) and Diesel Particulate Filter (DPF)

• BS6 engines are more fuel-efficient and environmentally friendly compared to BS4 engines

Solar panels convert sunlight into electricity through photovoltaic cells.

• Solar panels contain photovoltaic cells that convert sunlight into electricity

• When sunlight hits the cells, it excites electrons, creating a flow of electricity

• The electricity generated can be used to power homes, businesses, or stored in batteries for later use

Generation, transmission, and distribution are the three main levels of the electricity supply chain.

• Generation: Production of electricity from various sources such as coal, natural gas, hydro, solar, wind, etc.

• Transmission: High-voltage lines transport electricity over long distances from power plants to substations.

• Distribution: Lower-voltage lines distribute electricity from substations to homes and businesses.

• Example: Power plants generate electricity, which is then trans...read more

Safety measures in substations include grounding, fencing, warning signs, and personal protective equipment.

• Grounding systems to prevent electric shock

• Fencing to restrict unauthorized access

• Warning signs for high voltage areas

• Personal protective equipment for workers

• Emergency shutdown procedures

Circuit breakers are used to protect electrical circuits from damage caused by overload or short circuit.

• Circuit breakers automatically cut off the flow of electricity when a fault is detected.

• They help prevent fires and electrical hazards.

• They can be reset after tripping, unlike fuses which need to be replaced.

• Common types include thermal-magnetic, magnetic, and hydraulic-magnetic circuit breakers.

Transformer losses include copper losses and iron losses.

• Copper losses are caused by the resistance of the copper windings and are also known as I^2R losses.

• Iron losses are caused by hysteresis and eddy currents in the core material.

• Other losses include stray losses and dielectric losses.

• Total losses in a transformer are the sum of copper losses and iron losses.

MOSFET is a type of transistor used in electronic devices. Valence band is the highest energy band in a solid, while conduction band is the band above it.

• MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor.

• It is a type of transistor commonly used in electronic devices for switching and amplifying signals.

• The valence band is the highest energy band in a solid where electrons are normally present.

• The conduction band is the band above the valence band where elect...read more

The main parts of an electric vehicle (EV) include the battery, electric motor, power electronics, and charging port.

• Battery: Stores electrical energy to power the vehicle.

• Electric Motor: Converts electrical energy into mechanical energy to drive the vehicle.

• Power Electronics: Control the flow of electrical energy between the battery and motor.

• Charging Port: Allows the vehicle to be connected to a power source for recharging.

• Other components: Inverter, onboard charger, therma...read more

Quality control is the process of ensuring products or services meet specified standards and customer expectations.

• Quality control involves monitoring and testing products or services to ensure they meet established criteria

• It helps identify and correct defects or errors before products are released to customers

• Quality control can include inspections, audits, and testing procedures

• Examples of quality control measures include checking product dimensions, conducting performance...read more

The strength of reinforcement of mild steel is determined by its yield strength and ultimate tensile strength.

• The strength of reinforcement of mild steel is typically around 250 MPa to 600 MPa.

• Yield strength is the point at which the material permanently deforms, while ultimate tensile strength is the maximum stress a material can withstand before breaking.

• Reinforcement bars in construction are commonly made of mild steel due to its good strength and ductility.

Engineering is the application of scientific and mathematical principles to design and create structures, machines, systems, and processes.

• Engineering involves problem-solving and innovation

• It requires a deep understanding of math and science

• Engineers design, build, and maintain various structures and systems

• There are different branches of engineering such as civil, mechanical, electrical, and chemical

• Engineers work in a variety of industries including aerospace, automotive, ...read more

On load tap changers adjust the transformer winding ratio while the transformer is energized, while off load tap changers require the transformer to be de-energized for adjustment.

• On load tap changers allow for continuous adjustment of the transformer winding ratio without interrupting power supply.

• Off load tap changers require the transformer to be taken offline for adjustment, leading to downtime.

• On load tap changers are more complex and expensive compared to off load tap c...read more

Various tests are conducted on sites to ensure electrical systems are functioning properly.

• Insulation resistance test to check for any insulation breakdown

• Earth resistance test to ensure proper grounding

• Polarity test to verify correct wiring connections

• Continuity test to check for any breaks in the circuit

• Load testing to assess the performance of the electrical system

My favorite subject is Electrical Engineering because I enjoy working with circuits and solving complex problems.

• I have a strong interest in power systems and renewable energy

• I enjoy learning about electronic devices and their applications

• I find control systems and automation fascinating

Zener diode operates in reverse bias and maintains constant voltage, while Schottky diode has lower forward voltage drop.

• Zener diode operates in reverse bias and is designed to maintain a constant voltage across it.

• Schottky diode has a lower forward voltage drop compared to a standard diode.

• Zener diode is used for voltage regulation and protection circuits.

• Schottky diode is used in high-frequency applications and power rectification.

• Zener diode has a sharp breakdown voltage, ...read more

The torque equation of induction is used to calculate the torque produced in an induction motor.

• The torque equation of induction is given by T = (3 * V^2 * R2) / (s * X2)

• Where T is the torque, V is the voltage, R2 is the rotor resistance, s is the slip, and X2 is the rotor reactance

• This equation helps in understanding the relationship between voltage, resistance, reactance, and slip in determining the torque produced in an induction motor

Embedded systems are specialized computing systems designed to perform specific tasks within a larger system.

• Embedded systems are typically designed to be low-cost and low-power.

• They are often used in consumer electronics, automotive systems, industrial machines, and medical devices.

• Examples of embedded systems include microcontrollers in washing machines, automotive engine control units, and pacemakers.

• They are programmed to perform specific functions and are usually not use...read more

Microprocessors are integrated circuits that serve as the central processing unit in computers and other electronic devices.

• Microprocessors are responsible for executing instructions and performing calculations in electronic devices.

• They are made up of millions of tiny components packed into a single chip.

• Examples of microprocessors include Intel's Core series, AMD's Ryzen series, and ARM processors used in smartphones and tablets.

The collage project was a team-based assignment where we had to design and implement a small-scale electrical system.

• Collaborated with team members to brainstorm ideas and create a detailed plan

• Researched different components and technologies to use in the project

• Implemented the design, tested functionality, and made necessary adjustments

• Presented the final project to instructors and peers for evaluation

Heat exchangers are devices used to transfer heat between two or more fluids.

• Heat exchangers are commonly used in HVAC systems, refrigeration units, and power plants.

• They work by transferring heat from one fluid to another without the fluids mixing.

• Types of heat exchangers include shell and tube, plate, and finned tube.

• Examples of heat exchangers include radiators in cars and condensers in air conditioning units.

Gear is a mechanical component used to transmit motion and power between rotating shafts.

• Gears are toothed mechanical components that mesh together to transmit motion and power.

• They are commonly used in machinery to change the speed, torque, or direction of rotation.

• Gear manufacturing involves processes like cutting, shaping, hobbing, and grinding to create precise gear teeth.

• Examples of gears include spur gears, helical gears, bevel gears, and worm gears.

Losses in a transformer include copper losses and iron losses.

• Copper losses occur due to the resistance of the transformer windings.

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

• Copper losses can be minimized by using larger conductor sizes and reducing the winding resistance.

• Iron losses can be reduced by using high-quality magnetic materials and minimizing the core's magnetic flux density.

• Total losses in a transform...read more

Sensors are devices that detect and respond to physical input from the environment.

• Sensors convert physical quantities into electrical signals

• They are used in various applications such as temperature sensing, motion detection, and proximity sensing

• Examples include thermocouples, accelerometers, and proximity sensors

I was actively involved in organizing technical workshops and participating in robotics competitions.

• Organized technical workshops on circuit designing and programming

• Participated in robotics competitions at college level

• Attended seminars on latest advancements in electrical engineering

Insulators are materials that resist the flow of electric current, while dielectrics are insulating materials that can be polarized by an electric field.

• Insulators prevent the flow of electric current through them, while dielectrics can store electrical energy when subjected to an electric field.

• Insulators have high resistivity, while dielectrics have high permittivity.

• Examples of insulators include glass, rubber, and plastic, while examples of dielectrics include ceramic, mi...read more

Strain is a measure of deformation or change in shape of a material, calculated as the change in length divided by the original length.

• Strain is a dimensionless quantity, typically expressed as a percentage or in decimal form.

• It is calculated using the formula: Strain = (Change in length) / (Original length)

• There are different types of strain such as tensile strain, compressive strain, and shear strain.

• Strain can be caused by forces acting on a material, such as stretching, c...read more

Stress is a measure of the internal forces within a material that resist deformation.

• Stress is calculated by dividing the force applied to an object by the cross-sectional area of the object.

• The formula for stress is Stress = Force / Area.

• Stress is typically measured in units of force per unit area, such as Pascals (Pa) or pounds per square inch (psi).

Petrol engines use spark ignition, while diesel engines use compression ignition.

• Petrol engines use a spark plug to ignite the fuel-air mixture, while diesel engines rely on the heat generated by compressing air in the cylinder.

• Petrol engines are generally lighter and more responsive, while diesel engines are more fuel efficient and have higher torque.

• Petrol engines are more common in passenger cars, while diesel engines are often used in trucks, buses, and heavy machinery.

Manufacturing processes involve various methods to produce products efficiently and effectively.

• Different types of manufacturing processes include casting, machining, welding, forming, and additive manufacturing.

• Casting involves pouring molten material into a mold to create a desired shape, such as in metal casting for automotive parts.

• Machining uses tools to remove material from a workpiece, like in CNC milling for precision components.

• Welding joins materials together using ...read more

Illumination refers to the amount of light present in a space, measured in lux or foot-candles.

• Illumination is crucial for visibility and safety in indoor and outdoor environments.

• It is measured using units such as lux or foot-candles.

• Proper illumination levels are important in workplaces, homes, and public spaces.

• Examples of illumination sources include natural light, light fixtures, and streetlights.

Power factor is the ratio of real power to apparent power in an electrical circuit.

• Power factor is a measure of how effectively electrical power is being used in a circuit.

• It ranges from 0 to 1, with 1 indicating all power is being used effectively.

• A low power factor can result in increased energy costs and inefficient power usage.

• Power factor can be improved using power factor correction devices like capacitors.

The unit of resistance is Ohm (Ω)

• The unit of resistance is denoted by the symbol Ω (Ohm)

• Resistance is measured in Ohms, named after German physicist Georg Simon Ohm

• 1 Ohm is equal to 1 Volt per Ampere (V/A)

• Common examples of resistance include resistors in electronic circuits

An induction motor starts by applying a rotating magnetic field to the stator windings, inducing a current in the rotor windings.

• A rotating magnetic field is created in the stator windings by applying a three-phase AC voltage.

• The rotating magnetic field induces a current in the rotor windings, causing the rotor to start rotating.

• Once the rotor reaches near-synchronous speed, it will lock into the rotating magnetic field and continue to run.

• Starting methods like direct-on-line...read more

Wind power is generated by converting the kinetic energy of wind into electrical energy using wind turbines.

• Wind turbines capture the energy from the wind and convert it into rotational motion.

• The rotational motion is then used to spin a generator, which produces electricity.

• Wind power is a renewable energy source that is clean and does not produce greenhouse gas emissions.

• Wind farms consist of multiple wind turbines grouped together to generate larger amounts of electricity....read more

Renewable energy is energy that is generated from natural resources that are constantly replenished, such as sunlight, wind, and water.

• Renewable energy is derived from sources that are naturally replenished over a short period of time.

• It is considered sustainable because it does not deplete finite resources.

• Examples of renewable energy sources include solar power, wind power, hydropower, geothermal energy, and biomass.

• Renewable energy helps reduce greenhouse gas emissions and...read more

Total enf for a certain conditions refers to the total energy consumption for specific circumstances.

• Calculate the total energy consumption by summing up the individual energy consumption values for each condition.

• Consider factors such as duration, power rating, and efficiency when calculating total energy consumption.

• Example: Total energy consumption for a week of running a 100W light bulb for 8 hours a day.

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

EVs offer environmental benefits, cost savings, and improved performance compared to traditional vehicles.

• Environmental benefits: reduce greenhouse gas emissions, lower air pollution, and decrease dependence on fossil fuels.

• Cost savings: lower fuel and maintenance costs, potential tax incentives, and reduced reliance on fluctuating oil prices.

• Improved performance: instant torque for quick acceleration, quieter operation, and smoother driving experience.

• Examples: Tesla Model 3...read more

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, transformers, and control systems to manage the flow of electricity.

• E...read more

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 transformers used in electrical substations and distribution tra...read more

Instrumentation engineering allows for precise measurement and control of various processes in industries.

• Interest in working with advanced technology

• Opportunity to work in diverse industries like oil & gas, pharmaceuticals, and manufacturing

• Ability to design and implement systems for monitoring and controlling processes

• Desire to contribute to improving efficiency and safety in industrial operations

Mechatronics is the integration of mechanical, electrical, and computer engineering to create useful products and systems.

• Automated manufacturing systems

• Robotics

• Automated guided vehicles

• Smart home technology

• Medical devices

Challenges in electrical industry include rapid technological advancements, safety concerns, and skilled labor shortage.

• Rapid technological advancements leading to constant need for upskilling and training

• Safety concerns related to electrical hazards and compliance with regulations

• Skilled labor shortage impacting project timelines and quality of work

• Integration of renewable energy sources and smart grid technologies