Tata Motors
Estatemint Interview Questions and Answers
Q1. How would you specify a pneumatic cylinder to manufacturer ?
To specify a pneumatic cylinder to a manufacturer, provide details on bore size, stroke length, operating pressure, mounting style, and any special requirements.
Specify bore size and stroke length
Provide operating pressure and mounting style
Include any special requirements such as cushioning or magnetic sensors
Consider the application and environment when selecting materials and coatings
Specify the type of fluid to be used
Q2. How would you specify spring to manufacturer ?
Specify spring to manufacturer by providing material, dimensions, load requirements, and application details.
Specify the type of material required for the spring (e.g. stainless steel, music wire, etc.)
Provide the dimensions of the spring such as wire diameter, outer diameter, and length
Specify the load requirements such as the maximum load the spring needs to handle and the deflection required
Provide details about the application such as the environment the spring will be us...read more
Q3. Aerodynamics of race cars v/s normal cars
Race cars have more aerodynamic features than normal cars for better performance.
Race cars have spoilers, diffusers, and wings to create downforce and reduce drag.
Normal cars have a more streamlined design for fuel efficiency and comfort.
Race cars also have larger air intakes for better engine cooling.
Aerodynamics play a crucial role in the performance of race cars.
Examples of highly aerodynamic race cars include Formula 1 cars and Le Mans prototypes.
Q4. How to reduce pressure in car
To reduce pressure in a car, release some air from the tires.
Check the recommended tire pressure for your car in the owner's manual or on the tire itself.
Use a tire pressure gauge to measure the current pressure in each tire.
If the pressure is too high, use a tire pressure gauge to release some air until it reaches the recommended level.
Repeat for all tires.
Regularly check and maintain proper tire pressure to ensure safe and efficient driving.
Consider investing in a tire pres...read more
Q5. Wind tunnel testing for car model
Wind tunnel testing is crucial for car model development.
Wind tunnel testing helps to evaluate the aerodynamic performance of a car model.
It allows for the identification of areas that cause drag and turbulence.
Testing can be done on scale models or full-size cars.
Data collected from wind tunnel testing can be used to improve fuel efficiency and overall performance.
Testing can also help to optimize the design of the car's body and components.
Examples of wind tunnel testing fa...read more
Q6. Drag coefficient value for cars
The drag coefficient value for cars varies depending on the shape and size of the car.
The drag coefficient is a measure of the resistance a car experiences as it moves through the air.
Cars with a lower drag coefficient are more aerodynamic and can achieve higher speeds.
The drag coefficient can be improved by making changes to the car's design, such as reducing its frontal area or adding spoilers.
Examples of cars with low drag coefficients include the Tesla Model S (0.24) and ...read more
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