MRF Tyres Design Engineer Interview Questions and Answers

Q1. Sheet metal defects?
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Q2. What is k factor in sheet metal?
Ans. 
K factor in sheet metal is a constant representing the ratio of the location of the neutral axis to the material thickness.
• K factor determines how much a sheet metal part will stretch during bending.

• It is used in calculating the bend allowance, bend deduction, and other bending-related calculations.

• K factor values vary depending on the material type, thickness, and bending method.

• For example, a K factor of 0.5 means th...read more
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Q3. Plastic molding machine?
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Q4. Prevention plastic defects
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Q1. What is the role of npd person in industry?
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NPD person plays a crucial role in industry by leading the development of new products from concept to launch.
• Responsible for identifying market opportunities and consumer needs

• Leads cross-functional teams to develop new products

• Coordinates with various departments such as marketing, engineering, and manufacturing

• Manages the product development process from concept to commercialization

• Ensures products meet quality stan...read more
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Q2. How to solve manufacturing issue?
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To solve a manufacturing issue, identify the root cause, brainstorm solutions, implement changes, and monitor results.
• Identify the root cause of the issue by analyzing data and conducting tests.

• Brainstorm potential solutions with a cross-functional team to gather diverse perspectives.

• Implement changes based on the chosen solution, considering cost, time, and resources.

• Monitor the results of the changes to ensure they e...read more
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Q3. What is current & voltage?
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Current is the flow of electric charge in a circuit, measured in Amperes (A). Voltage is the electrical potential difference between two points in a circuit, measured in Volts (V).
• Current is the rate of flow of electric charge in a circuit

• Voltage is the electrical potential difference between two points in a circuit

• Current is measured in Amperes (A)

• Voltage is measured in Volts (V)

• Ohm's Law relates current, voltage, and
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Q4. Cad test on creo software version 7.0? 45 min cad test complete timing?
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Q5. Written interview? 45 min. If any person are required this written interview test paper. Pls mail. My mail id is- *****
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Q1. What is the relay
Ans. 
A relay is an electrically operated switch that uses an electromagnet to mechanically operate a switch.
• Relays are used to control high power circuits with low power signals

• They are commonly used in automotive, industrial, and household applications

• Relays can be classified based on their operation, such as electromechanical relays or solid-state relays
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Q2. Ohm's law and current
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Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, given constant resistance.
• Ohm's law equation: V = I * R (voltage = current * resistance)

• Current is the flow of electric charge through a conductor

• Higher voltage leads to higher current flow, given constant resistance

• Lower resistance leads to higher current flow, given constant voltage
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Q1. Explain various GD&T
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Geometric Dimensioning and Tolerancing (GD&T) is a system for defining and communicating engineering tolerances.
• GD&T is used to specify the allowable variations in form, size, and orientation of features on a part.

• It uses symbols, such as concentricity, flatness, and perpendicularity, to communicate the desired tolerances.

• GD&T helps ensure that parts fit together properly and function as intended.

• Examples of GD&T symbo...read more
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Q2. Explain DFM, DFS, DFA
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DFM, DFS, and DFA stand for Design for Manufacturing, Design for Service, and Design for Assembly, respectively.
• DFM focuses on designing products that are easy and cost-effective to manufacture.

• DFS focuses on designing products that are easy to service and maintain.

• DFA focuses on designing products that are easy to assemble.

• Consideration of DFM, DFS, and DFA principles can lead to more efficient and cost-effective prod...read more
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Tough one to attempt

Q1. Asked questions related to few mechanical engineering topics
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Q1. Plastics and their uses
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Plastics are versatile materials used in various industries for their durability, flexibility, and cost-effectiveness.
• Plastics are commonly used in packaging materials such as bottles, containers, and bags.

• They are also used in construction for pipes, insulation, and flooring.

• In the automotive industry, plastics are used for interior components, bumpers, and body panels.

• Plastics are essential in electronics for casings...read more
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Q1. Explain Free body Diagram ?
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Free body diagram is a visual representation of all the forces acting on an object in a given situation.
• It shows all the forces acting on an object as vectors, with arrows indicating the direction and magnitude of each force.

• The object of interest is represented as a point or a simple shape, with all external forces acting on it shown around it.

• Internal forces within the object are not shown on a free body diagram.

• Free...read more
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Q2. What is the working principle of a brake system ?
Ans. 
A brake system works by converting kinetic energy into heat energy through friction to slow down or stop a vehicle.
• Brake pedal is pressed by the driver

• Brake fluid is compressed in the master cylinder

• Pressure is transmitted through brake lines to the brake calipers or wheel cylinders

• Brake pads or shoes press against the brake rotor or drum to create friction and slow down the vehicle
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Q1. What is Stack up tolerance ?
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Stack up tolerance refers to the accumulation of tolerances in a series of components or parts that are assembled together.
• Stack up tolerance is important in ensuring that all components fit together properly in an assembly.

• It involves considering the individual tolerances of each component and how they may add up or cancel out when assembled.

• For example, if a shaft has a tolerance of +/- 0.1mm and a hole has a toleran...read more
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Q2. What is the difference between cylindricity and roundness in GD&T ?
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Cylindricity refers to the overall 3D form of a cylinder, while roundness refers to the deviation of a circle from a perfect circle.
• Cylindricity is a 3D tolerance that controls the overall form of a cylinder, ensuring that all points on the surface lie within a specified tolerance zone.

• Roundness is a 2D tolerance that controls the deviation of a circle from a perfect circle, ensuring that the entire circle lies within ...read more
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Q1. Create 3d model for the given engineering drawing ?
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To create a 3D model from an engineering drawing, use CAD software to accurately replicate the dimensions and features.
• Use CAD software such as AutoCAD, SolidWorks, or Fusion 360 to create the 3D model.

• Refer to the engineering drawing for dimensions, angles, and features to accurately replicate in the 3D model.

• Utilize tools within the CAD software to create extrusions, cuts, fillets, and other features as needed.

• Check ...read more
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Q2. Do drafting for the given 3d model ?
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Yes, I can create detailed 2D drawings based on the 3D model provided.
• Create orthographic views (top, front, side) of the 3D model

• Include dimensions, annotations, and tolerances in the drawings

• Generate section views to show internal features

• Add surface finish symbols and notes as needed
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Written test related to casting and plastic

Q1. Related to experience
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Q1. Expectation and why you want tomove
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Q1. Design using nx
Ans. 
Design using nx
• NX is a powerful CAD software used for designing

• It offers a wide range of tools and features for creating complex designs

• Examples of designs that can be created using NX include automotive parts, machinery, and consumer products
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Q1. About projects and personal questions
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