Johnson Controls Graduate Trainee Interview Questions and Answers

Q1. Technical related questions 30 questions for 30 min
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Q2. Various appitude related questions
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Q1. Explanation about projects
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Q2. Power systems and power electronics
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Q1. Detail OOP concept with real life examples?
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OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation: Objects can hide their internal state and require interaction through defined interfaces

• Inheritance: Objects can inherit attributes and methods from parent classes

• Polymorphism: Objects ...read more
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Q2. SQL query to find highest salary.
Ans. 
Use SQL query with MAX function to find highest salary.
• Use SELECT statement with MAX function to retrieve highest salary from salary column.

• Example: SELECT MAX(salary) FROM employees;

• Make sure to replace 'employees' with the actual table name where salary data is stored.
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Q1. Change the odd bits in the binary form of a given number and convert the new binary into decimal form
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To change the odd bits in a binary number, flip the bits at odd positions and convert the new binary number to decimal form.
• Start by converting the given number into binary form.

• Identify the odd bits in the binary number (counting from right to left, starting at 1).

• Flip the odd bits by changing 1s to 0s and 0s to 1s.

• Convert the new binary number into decimal form.

• For example, if the given number is 13 (binary 1101), th...read more
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Q2. Primary vs secondary memory
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Primary memory is volatile and directly accessible by the CPU, while secondary memory is non-volatile and used for long-term storage.
• Primary memory is faster but has limited capacity, while secondary memory is slower but has larger capacity.

• Examples of primary memory include RAM and cache memory, while examples of secondary memory include hard drives and SSDs.

• Primary memory stores data that is currently being used by t...read more
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There were logical reasoning and critical thinking along with mental ability

Q1. Technical interview related to your field of study
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Q2. About my college project
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Q3. Basics of cad and uses of creo
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Q1. Why do you want to join the company and what are your expectation
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