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Cadmaxx Solutions

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10+ GMR Group Interview Questions and Answers

Updated 24 Jul 2024

Q1. What is Relay and working principle?

Ans.

A relay is an electrically operated switch that uses an electromagnet to mechanically operate the switch contacts.

  • Relays are used to control high power circuits with a low power signal.

  • When the coil of the relay is energized, it creates a magnetic field that causes the switch contacts to close or open.

  • Relays are commonly used in industrial applications, automotive systems, and control panels.

  • There are different types of relays such as electromagnetic relays, solid-state relay...read more

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Q2. 1) what is CAN? 2) CAN FRAME FORMAT 3) Diagnostics services 4)LIN protocol 5) CAPL program Questions 6)CAN log analysis 7)Details of project knowledge 8)Frame error and Frame types 9)Basic Python questions and ...

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Ans.

Interview questions for software engineer related to CAN, diagnostics services, LIN protocol, CAPL program, CAN log analysis, project knowledge, frame error and types, and basic Python.

  • CAN stands for Controller Area Network and is a communication protocol used in automotive and industrial applications.

  • CAN frame format consists of an identifier, data, and control bits.

  • Diagnostics services include reading and clearing diagnostic trouble codes, and accessing sensor data.

  • LIN prot...read more

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Q3. What about spot welding?

Ans.

Spot welding is a type of resistance welding used to join metal parts together by applying pressure and heat at localized points.

  • Spot welding is commonly used in the automotive industry to join sheet metal components together.

  • It is a quick and efficient welding process that can create strong and durable welds.

  • Spot welding machines use electrodes to apply pressure and pass an electric current through the metal parts to create the weld.

  • The heat generated by the resistance to th...read more

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Q4. Working principle of pneumatic cylinder?

Ans.

Pneumatic cylinders operate using compressed air to create linear motion.

  • Pneumatic cylinders use compressed air to move a piston back and forth within a cylinder.

  • The compressed air is supplied through a valve, which controls the direction and speed of the piston.

  • The piston is connected to a load, allowing the cylinder to exert force and move objects.

  • Common applications include automation, manufacturing, and robotics.

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Q5. Solenoid valves working principle.

Ans.

Solenoid valves use an electromagnetic coil to open and close a valve, controlling the flow of liquids or gases.

  • Solenoid valves have an electromagnetic coil that generates a magnetic field when energized.

  • This magnetic field moves a plunger or armature to open or close the valve.

  • They are commonly used in applications such as controlling water flow in irrigation systems or air flow in pneumatic systems.

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Q6. Manipulator robot maintenance work.

Ans.

Maintenance work on manipulator robots involves regular inspections, cleaning, lubrication, and troubleshooting of mechanical and electrical components.

  • Regularly inspecting the robot for signs of wear and tear

  • Cleaning the robot's joints and actuators to prevent buildup of debris

  • Lubricating moving parts to ensure smooth operation

  • Troubleshooting electrical components for any malfunctions

  • Replacing worn out parts as needed to prevent breakdowns

  • Calibrating sensors and controllers ...read more

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Q7. What is the difference between final, finalize, finally

Ans.

final is a keyword used to declare constants, finalize is a method used for cleanup, and finally is a block used for exception handling.

  • final is used to declare constants in Java, meaning the value cannot be changed once assigned.

  • finalize is a method in Java used for cleanup operations before an object is garbage collected.

  • finally is a block used in exception handling to ensure a piece of code is always executed, regardless of whether an exception is thrown.

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Q8. What is the program doing

Ans.

I need more context to answer this question.

  • Can you provide more information about the program?

  • What is the program's purpose or function?

  • What language is the program written in?

  • Are there any error messages or issues with the program?

  • Can you provide a screenshot or code snippet of the program?

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Q9. Which software skills you worked on

Ans.

I have worked on software skills such as Java, Python, SQL, and HTML/CSS.

  • Java

  • Python

  • SQL

  • HTML/CSS

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Q10. Plastic part design strategy

Ans.

Plastic part design strategy involves considering material selection, manufacturing process, and design for assembly.

  • Choose the appropriate plastic material based on the application requirements

  • Consider the manufacturing process and design for manufacturability

  • Design for assembly to minimize part count and simplify assembly

  • Use simulation tools to optimize the design and identify potential issues

  • Consider environmental factors such as temperature and humidity

  • Ensure proper wall ...read more

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Q11. SQL query to retrieve top 5 records.

Ans.

Use SQL query with ORDER BY and LIMIT to retrieve top 5 records.

  • Use SELECT statement to specify columns to retrieve

  • Use ORDER BY clause to sort the records in descending order

  • Use LIMIT clause to limit the number of records to 5

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Q12. SQL query to update data.

Ans.

SQL query to update data in a database table.

  • Use the UPDATE statement followed by the table name.

  • Set the column(s) to be updated using SET keyword.

  • Specify the new values for the columns to be updated.

  • Add a WHERE clause to specify the condition for updating specific rows.

  • Example: UPDATE table_name SET column1 = value1, column2 = value2 WHERE condition;

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