Electrical GET
100+ Electrical GET Interview Questions and Answers
Q51. Methods to reduce harmonics in induction motor
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
Q52. Transportation and logistics in the market
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
Q53. Will you be able torelocate to anycorner of India
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
Q54. Circuit digram of ground and motorised CB ?
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
Q55. What are the type of Transformers
Transformers can be classified into different types based on their construction, purpose, and voltage levels.
Based on Construction: Shell type, Core type, Berry type
Based on Purpose: Power transformer, Distribution transformer, Instrument transformer
Based on Voltage Levels: Step-up transformer, Step-down transformer, Auto transformer
Q56. Difference between Synchronous and induction motor
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
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Q57. Cable and Transformer types and it's rating
Cables and transformers are essential components in electrical systems, with various types and ratings.
Cable types include power cables, control cables, and communication cables.
Transformer types include power transformers, distribution transformers, and instrument transformers.
Ratings for cables are based on voltage, current carrying capacity, and insulation level.
Ratings for transformers include power rating, voltage rating, and efficiency rating.
Q58. Difference between Bs4 and Bs6 engine
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
Q59. How solar energy in solar panels work
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
Q60. Levels of Generation transmission and distribution
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
Q61. What type safety used in substation
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
Q62. What's the use of circuit breaker
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.
Q63. What are the type of transformer losses
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.
Q64. Explain about mosfet Expalin about valence and conduction band
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
Q65. what are the EV main parts
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
Q66. What is ment by quality control
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
Q67. Strength of reinforcement of mild steel
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.
Q68. What is the meaning of Engineering
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
Q69. ON LOAD TAP CHANGERS VS OFF LOAD TAP CHANGERS
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
Q70. What is the test done in sites
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
Q71. What is your fav subject?
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
Q72. Difference between zener and schotky diode
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
Q73. Torque equation of induction and explain
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
Q74. What is embedded systems
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
Q75. What is microprocessors
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.
Q76. What was the collage project
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
Q77. What you know about heat exchangers
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.
Q78. What is gear? Gear manufacturing
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.
Q79. Losses of transformer
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
Q80. What do you know About sensors
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
Q81. Tell us extra curriculum activities
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
Q82. difference between insulator and di electric
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
Q83. What's strain, how to calculate
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
Q84. What's stress, how to calculate
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).
Q85. Difference between petrol & Diseal engine
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.
Q86. Manufacturing processes and types and details
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
Q87. What is illumination?
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.
Q88. What is the power factor?
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.
Q89. What is the unit of resistance
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
Q90. How does induction motor starts
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
Q91. How wind power is generated
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
Q92. What is renewable energy
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
Q93. Total enf for a certain conditions
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.
Q94. What is star delta Starter
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
Q95. which are EV advantages
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
Q96. What are power systems?
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
Q97. What are Transformers?
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
Q98. why instrumentation engineering.
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
Q99. mechatronics application in real life
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
Q100. Challenges in electrical industry
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
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