Cadmaxx Solutions
10+ GMR Group Interview Questions and Answers
Q1. What is Relay and working principle?
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
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 ...
read moreInterview 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
Q3. What about spot welding?
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
Q4. Working principle of pneumatic cylinder?
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.
Q5. Solenoid valves working principle.
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.
Q6. Manipulator robot maintenance work.
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
Q7. What is the difference between final, finalize, finally
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.
Q8. What is the program doing
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?
Q9. Which software skills you worked on
I have worked on software skills such as Java, Python, SQL, and HTML/CSS.
Java
Python
SQL
HTML/CSS
Q10. Plastic part design strategy
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
Q11. SQL query to retrieve top 5 records.
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
Q12. SQL query to update data.
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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