Atlas Copco Quality Assurance Interview Questions and Answers

Quantitative Aptitude, Numerical Ability, Synonym etc

Q1. Introduce yourself Where you did Training? What was your academic project? Guide? What do you like? Tractor or Implement? What is your aim?
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Conversation about my experience

There were 4 sections and first one was quant, second one was logical, third was English and finally 3 coding questions in last section

4 codes and 5 technical questions

Q1. Explain multi threading
Ans. 
Multi threading is the ability of a CPU to execute multiple threads concurrently.
• Allows for parallel execution of tasks, improving performance

• Each thread has its own stack and runs independently

• Threads can communicate and synchronize using shared memory

• Examples: running multiple tasks simultaneously in a web server, processing data in parallel
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Q2. What is polymorphism
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types.

• Examples include method overloading and method overriding in object-oriented programming.
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Q3. Diff b/w inner and outer joins
Ans. 
Inner join returns only the rows that have matching values in both tables, while outer join returns all rows from both tables.
• Inner join: returns rows with matching values in both tables

• Outer join: returns all rows from both tables, with NULL values where there is no match

• Example: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id

• Example: Outer join - SELECT * FROM table1 LEFT OUTER JOIN table
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Aptitude test, quant, grammer, logical

Java coding questions and sql query

Q1. Regarding company
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Q2. Regarding company culture they have asked
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Q1. What is the working of generator?
Ans. 
A generator is a device that converts mechanical energy into electrical energy through electromagnetic induction.
• Generators work on the principle of electromagnetic induction.

• They consist of a coil of wire rotating in a magnetic field.

• The rotation of the coil induces a current in the wire, producing electricity.

• Generators are commonly used in power plants, wind turbines, and portable generators.

• Different types of gener
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Q2. Components of generator
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Components of a generator include engine, alternator, fuel system, voltage regulator, cooling and exhaust system, and control panel.
• Engine: provides power to the generator

• Alternator: converts mechanical energy into electrical energy

• Fuel system: supplies fuel to the engine

• Voltage regulator: maintains a constant voltage output

• Cooling and exhaust system: keeps the generator running at optimal temperature

• Control panel: all
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Q3. What do you know about Cummins?
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Q1. Introduce yourself
Ans. 
I am a software developer with 5 years of experience in Java, Python, and SQL.
• 5 years of experience in Java, Python, and SQL

• Strong problem-solving skills

• Experience working in Agile development environment
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Q1. What is relay? what are different componets used in electronics.
Ans. 
A relay is an electrically operated switch. Components used in electronics include resistors, capacitors, transistors, diodes, and integrated circuits.
• Relay is an electrically operated switch used to control a circuit by a low-power signal

• Components used in electronics include resistors, capacitors, transistors, diodes, and integrated circuits

• Resistors are used to limit current flow, capacitors store and release electr...read more
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Q2. What are ICs? Also explain about your project.
Ans. 
ICs stand for Integrated Circuits, which are small electronic devices made up of multiple interconnected components.
• ICs are used in various electronic devices to perform specific functions.

• They can contain thousands to millions of transistors, resistors, capacitors, and other components.

• Examples of ICs include microprocessors, memory chips, and amplifiers.
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Q1. List and dictionary
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Q2. Django framework
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