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I applied via Approached by Company and was interviewed before Apr 2021. There were 2 interview rounds.
Electrification of an ICE vehicle requires significant changes to the powertrain and supporting systems.
Removal of the internal combustion engine and installation of an electric motor
Addition of a battery pack and associated electronics
Modification of the transmission or installation of a new one
Upgrades to the cooling and heating systems
Changes to the braking system to enable regenerative braking
Installation of chargi...
Weight distribution & GVW can be targeted by analyzing the vehicle's design, load capacity, and distribution of weight.
Analyze the vehicle's design and load capacity to determine the maximum GVW
Distribute the weight evenly across the vehicle to maintain stability
Consider the type of cargo being transported and adjust weight distribution accordingly
Ensure that the vehicle is not overloaded and is within legal weight lim...
Parameters for vehicle integration job
Compatibility of different vehicle systems
Electrical and mechanical integration
Safety regulations compliance
Testing and validation
Cost and time constraints
The electric motor is mounted differently for front-wheel and rear-wheel drive vehicles.
In front-wheel drive vehicles, the electric motor is mounted transversely, usually between the engine and the transmission.
In rear-wheel drive vehicles, the electric motor is mounted longitudinally, usually behind the transmission.
In some cases, electric motors can also be mounted directly on the wheels, known as in-wheel motors.
The...
EV battery pack mounting requires proper placement, securing, and cooling to ensure safety and performance.
Consider the weight and size of the battery pack and ensure it is mounted securely to prevent movement or damage during operation.
Choose a location that allows for proper cooling and ventilation to prevent overheating.
Use appropriate mounting hardware and techniques to ensure the battery pack is securely fastened ...
An electric vehicle requires several components or aggregates to function. These include the battery, motor, controller, charger, and more.
Battery - stores energy to power the vehicle
Motor - converts electrical energy into mechanical energy to propel the vehicle
Controller - manages the flow of electricity between the battery and motor
Charger - recharges the battery when needed
Power electronics - converts DC power from ...
Vehicles are categorised as per AIS based on their type and usage. The standard to be referred is AIS-052.
AIS categorises vehicles into various types such as M1, N1, L5, etc.
The categorisation is based on factors such as weight, seating capacity, and usage.
AIS-052 is the standard that specifies the requirements for the categorisation of vehicles.
This standard also provides guidelines for the testing and certification o...
Factors to consider for selecting an EV motor
Power and torque requirements
Efficiency and energy consumption
Size and weight constraints
Cost and availability
Compatibility with battery and controller
Regenerative braking capability
Maintenance and reliability
Environmental impact
Battery capacity can be determined by calculating the product of current and time.
Calculate the current drawn by the device
Determine the time for which the device will be used
Multiply the current and time to get the battery capacity
Consider the efficiency of the battery and the device while calculating capacity
FAW & RAW can be calculated by dividing the total number of hours worked by the number of units produced.
FAW stands for Full-time equivalent adjusted workload and RAW stands for Regular adjusted workload.
To calculate FAW, divide the total number of hours worked by the number of hours in a full-time workweek.
To calculate RAW, divide the total number of hours worked by the number of units produced.
For example, if an empl...
Different suspension types include rigid, spring, hydraulic, and air suspension. Travel conditions refer to the range of motion of the suspension.
Rigid suspension has no movement and is commonly found in bicycles
Spring suspension uses metal coils to absorb shock and is commonly found in cars
Hydraulic suspension uses fluid to absorb shock and is commonly found in heavy-duty vehicles
Air suspension uses compressed air to ...
Crash and rollover requirements for EVs are determined by various standards such as FMVSS, ECE, and GB.
Crash and rollover requirements for EVs are determined by various standards such as FMVSS, ECE, and GB.
FMVSS 305 is the standard for electric-powered vehicles, which includes requirements for post-crash safety, electrical isolation, and thermal management.
ECE R100 is the European standard for electric vehicles, which...
Gradability is the measure of a road's slope. It is calculated as a percentage or ratio of rise to run.
Gradability is important in road design and construction.
It is calculated by dividing the rise (vertical distance) by the run (horizontal distance) and multiplying by 100 to get a percentage.
A road with a 10% grade means that for every 100 feet of horizontal distance, the road rises 10 feet.
Steep grades can be dangero...
Factors affecting range of an EV
Battery capacity and chemistry
Vehicle weight and aerodynamics
Driving behavior and terrain
Temperature and climate
Efficiency of regenerative braking
Accessories and load on the battery
Charging infrastructure and speed
Tire pressure and maintenance
There are three types of EV chargers: Level 1, Level 2, and DC fast chargers.
Level 1 chargers use a standard 120-volt outlet and provide up to 4 miles of range per hour of charging.
Level 2 chargers require a 240-volt outlet and provide up to 25 miles of range per hour of charging.
DC fast chargers provide the fastest charging speeds, with up to 80% charge in 30 minutes.
Examples of Level 1 chargers include the standard c...
ADR angles are the angles between the axes of a vehicle's suspension system. They can be calculated using trigonometry and referred to industry standards.
ADR stands for Australian Design Rules.
The angles are important for ensuring proper handling and stability of the vehicle.
Calculations involve measuring the angles of the suspension components and using trigonometry to determine the ADR angles.
Industry standards such ...
Regenerative braking is a system that converts kinetic energy into electrical energy to recharge a vehicle's battery.
It is commonly used in electric and hybrid vehicles.
During braking, the electric motor acts as a generator, converting the kinetic energy into electrical energy.
The electrical energy is then stored in the battery for later use.
Regenerative braking helps to improve the overall efficiency of the vehicle an...
Minimum mandatory clearances between one aggregate and other dynamic aggregates.
The minimum clearance depends on the size and speed of the aggregates.
Clearances should be maintained to avoid collisions and damage to the aggregates.
Clearances can be calculated using mathematical formulas and simulations.
Examples of dynamic aggregates include vehicles, robots, and drones.
Clearances should also take into account any obsta
There are three types of electric vehicles: Battery Electric Vehicles, Plug-in Hybrid Electric Vehicles, and Hybrid Electric Vehicles.
Battery Electric Vehicles (BEVs) run solely on electricity stored in batteries.
Plug-in Hybrid Electric Vehicles (PHEVs) have both an electric motor and a gasoline engine, and can run on either power source.
Hybrid Electric Vehicles (HEVs) have an electric motor and a gasoline engine, but ...
Uneven weight distribution affects suspension by causing imbalance and uneven wear on tires and suspension components.
Uneven weight distribution can cause the vehicle to pull to one side or the other
It can also cause uneven wear on tires and suspension components
This can lead to premature failure of suspension components and decreased handling and stability
Proper weight distribution is important for optimal performance
H-Point is the hip point of a vehicle seat. It determines the seating position and ergonomics of the driver.
H-Point is the pivot point of the human body where the thighs and torso meet.
It is used to determine the position of the driver's seat in a vehicle.
The H-Point is important for ensuring proper ergonomics and comfort for the driver.
It is also used in crash testing to determine the position of the test dummy in the...
Five failure modes for an EV and their resolutions
Battery failure - replace battery or repair
Motor failure - replace motor or repair
Charging failure - check charging port and cable, replace if necessary
Brake failure - check brake system, replace brake pads or repair
Software failure - update software or replace faulty components
DFMEA stands for Design Failure Mode and Effects Analysis. It is a systematic approach to identify and prevent potential failures in a product or process.
DFMEA is a proactive risk assessment tool used during the design phase of a product or process.
It involves identifying potential failure modes, their effects, and the likelihood of occurrence.
The responsibility of creating DFMEA lies with the design team, but it requi...
Occupant packaging refers to the arrangement of occupants in a vehicle to ensure safety and comfort.
Parameters to be considered include body size and shape, seating position, seatbelt usage, and airbag deployment.
Occupant packaging is important for crash safety and can also affect passenger comfort and ergonomics.
Examples of occupant packaging solutions include adjustable seats and headrests, seatbelt pre-tensioners, a...
I applied via Approached by Company and was interviewed in Jun 2022. There were 2 interview rounds.
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posted on 4 Jan 2025
I applied via Naukri.com and was interviewed in Jun 2024. There was 1 interview round.
Points to consider when designing a jig
Understand the purpose of the jig
Consider the material and dimensions of the workpiece
Ensure proper alignment and stability
Include features for easy clamping and adjustment
Design for ease of use and efficiency
I applied via Newspaper Ad and was interviewed in Jan 2024. There were 2 interview rounds.
What is failure analysis
Basis of failure analysis, testing and process
Asking about ratio related qst and profit loss regarding or engineering regarding
I applied via Campus Placement and was interviewed in Mar 2023. There were 3 interview rounds.
Technical and aptitute question. Very basic.
I designed a solar-powered water purification system.
Developed a system that uses solar energy to purify water
Designed and built a prototype of the system
Conducted tests to evaluate the efficiency and effectiveness of the system
Implemented improvements based on test results
Collaborated with a team of engineers and researchers
I am passionate about design engineering and this company aligns with my values and goals.
The company has a strong reputation in the industry for innovation and quality.
They offer opportunities for professional growth and development.
The company values collaboration and teamwork, which is important to me.
They have a diverse and inclusive work culture.
The company's products have a positive impact on society.
I admire the...
I applied via Approached by Company and was interviewed before Feb 2023. There was 1 interview round.
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