Johnson Controls Interview Questions, Process, and Tips

Q1. Related to work profile
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Q1. Practical question related to work
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Q1. Salary discussions and HR general questions. Why you wanna join?
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Aptitude test evaluates skills and knowledge.

1. The coding test assesses programming skills.


2. It includes problem-solving and debugging tasks.


3. Candidates must write clean, efficient code.


4. Various languages like Python, Java are supported.


5. Time limits are set for each question.


6. Results are based on accuracy and performance.

Q1. Asking expectations
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Q2. Hr explaining about company
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Basic mcq questions with the knowledges of aptitude questions

Q1. They asked me about the SQL queries and data related knowlege
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Q1. Tell me something about yourself
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Q2. What is O2C cycle ?
Ans. 
O2C cycle stands for Order to Cash cycle, which is the process of receiving and fulfilling customer orders.
• Includes order processing, inventory management, invoicing, and receiving payment

• Ensures timely delivery of products/services to customers

• Helps in tracking sales, managing cash flow, and improving customer satisfaction

• Example: Customer places an order -> Order is processed -> Product is shipped -> Invoice
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It was aptitude plus technical test which was easy and very basic questions were asked

Q1. Interview was easy for me as I have good technical knowledge. But it was really hard for others
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Q2. Explain PID controller
Ans. 
PID controller is a feedback control mechanism used in engineering to regulate a system's output.
• PID stands for Proportional-Integral-Derivative

• It continuously calculates an error value as the difference between a desired setpoint and a measured process variable

• The controller then adjusts the output to minimize the error

• Proportional control responds to the current error, integral control responds to the error over time...read more
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Q3. Where do you see yourself in next 5 years
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Q4. What is transistor its use and working
Ans. 
Transistor is a semiconductor device used for amplification and switching of electronic signals.
• Transistor is made up of three layers of semiconductor material - P-type, N-type, and P-type.

• It has three terminals - emitter, base, and collector.

• Transistor can be used as an amplifier to increase the strength of a weak signal.

• It can also be used as a switch to turn a circuit on or off.

• Transistors are used in various electr...read more
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Q5. Projects related questions
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Q1. What is VFD in Induction Motor
Ans. 
VFD stands for Variable Frequency Drive which is used to control the speed of an induction motor.
• VFD is an electronic device that controls the frequency and voltage supplied to an induction motor.

• It can be used to vary the speed of the motor as per the requirement.

• VFDs are commonly used in industries to save energy and improve efficiency.

• They can also be used to reduce mechanical stress on the motor and increase its li...read more
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Q2. Types of Induction Motor
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There are two main types of induction motors: squirrel cage induction motors and wound rotor induction motors.
• Squirrel cage induction motors have a simple and robust construction, with a rotor consisting of bars shorted at both ends.

• Wound rotor induction motors have a rotor with three windings connected to slip rings, allowing external resistors to be connected for improved control.

• Other types of induction motors inclu...read more
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Q3. Types of Capacitors and Dielectric
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Capacitors are electronic components that store energy in an electric field. There are different types of capacitors based on their dielectric material.
• Types of capacitors include ceramic, electrolytic, tantalum, film, and paper capacitors.

• Dielectric materials used in capacitors include ceramic, aluminum oxide, tantalum pentoxide, polyester, and polypropylene.

• Ceramic capacitors are commonly used in high-frequency circu...read more
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Q4. Power Systems basics
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Q1. Tell me about yourself
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Q2. How your friends will describe you in one word
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Q1. What is 2+2-4*6 in numerical format
Ans. 
The answer is -22
• Perform multiplication first

• Then perform addition and subtraction from left to right
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Q2. Questions based on directions and distance
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Q1. Write a code to find smaller prime number than input
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Code to find smaller prime number than input
• Start from input-1 and check if it's prime

• If yes, return it

• If not, continue checking smaller numbers until a prime is found

• If no prime is found, return -1
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Q2. Tell us about OSI model
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OSI model is a conceptual model that defines how data is transmitted over a network.
• OSI stands for Open Systems Interconnection.

• It has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has a specific function and communicates with adjacent layers.

• Example: HTTP protocol works at the Application layer, while TCP protocol works at the Transport layer.

• The model helps in un...read more
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Q1. Tell about your family
Ans. 
I come from a close-knit family with diverse backgrounds and strong values.
• My parents are both educators, and they have instilled in me a love for learning and a strong work ethic.

• I have two siblings, an older sister who is a doctor and a younger brother who is studying computer science.

• We often gather for family dinners and enjoy engaging in lively discussions about various topics.

• My family has always been supportive ...read more
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Q2. Introduce yourself in 10 words
Ans. 
Passionate software engineer with strong problem-solving skills and experience in full-stack development.
• Passionate software engineer

• Strong problem-solving skills

• Experience in full-stack development
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