Johnson Controls Senior Application Engineer Interview Questions, Process, and Tips

Q1. What are active power and reactive power in an electrical system?
Ans. 
Active power is the actual power consumed by a system, while reactive power is the power that oscillates between the system and the source.
• Active power is the real power consumed by electrical devices and is measured in watts (W).

• Reactive power is the power that flows back and forth between the source and the load, without performing any useful work.

• The combination of active power and reactive power gives the total pow...read more
Answered by AI
Add your answer
Q2. What are the different types of temperature sensors, and what do RTD and PT100 mean?
Ans. 
Different types of temperature sensors include thermocouples, RTDs, thermistors, and infrared sensors. RTD stands for Resistance Temperature Detector and PT100 is a type of RTD.
• Thermocouples: measure temperature based on voltage produced by two different metals joined together

• RTDs (Resistance Temperature Detectors): measure temperature by changes in electrical resistance

• Thermistors: measure temperature based on changes...read more
Answered by AI
Add your answer
Q3. What is your understanding of Building Management Systems (BMS), and how do they function?
Ans. 
BMS are systems that control and monitor building operations, such as HVAC, lighting, and security, to improve efficiency and occupant comfort.
• BMS integrate various building systems to centralize control and monitoring.

• They use sensors and actuators to collect data and adjust settings based on predefined parameters.

• BMS can optimize energy usage, reduce maintenance costs, and improve occupant comfort.

• Examples of BMS inc...read more
Answered by AI
Add your answer
Q4. What is forward and backward flow in PID control system?
Ans. 
Forward flow is the direct action of the controller on the process, while backward flow is the feedback from the process to the controller in a PID control system.
• Forward flow is the control action that directly affects the process based on the setpoint and error signal.

• Backward flow is the feedback mechanism where the process output is compared to the setpoint to generate an error signal for the controller.

• In a PID co...read more
Answered by AI
Add your answer
Q5. Tell me about your self and experience
Ans. 
I am a Senior Application Engineer with 8 years of experience in developing and implementing software solutions for various industries.
• 8 years of experience in software development

• Proficient in programming languages such as Java, C++, and Python

• Strong background in designing and implementing complex applications

• Experience working with cross-functional teams to deliver high-quality solutions

• Proven track record of succes...read more
Answered by AI
Add your answer
Q6. What is your family background? What is your father do?
Ans. 
My family background is diverse with members in various professions. My father is a retired engineer.
• Diverse family background

• Father is a retired engineer
Answered by AI
Add your answer
Q7. Why you want to change your job?
Ans. 
Seeking new challenges and opportunities for growth in a different environment.
• Desire for new challenges and learning opportunities

• Seeking career advancement and growth

• Interest in working with different technologies or industries

• Better work-life balance or company culture

• Relocation or commute reasons
Answered by AI
Add your answer
Q8. What are Modbus and BACnet in the context of a Building Management System (BMS)?
Ans. 
Modbus and BACnet are communication protocols used in Building Management Systems (BMS) to enable devices to communicate with each other.
• Modbus is a serial communication protocol commonly used for connecting industrial electronic devices. It is simple and easy to implement.

• BACnet is a protocol specifically designed for building automation and control networks. It allows different devices from different manufacturers to...read more
Answered by AI
Add your answer

Q1. Basic about fire alarm
Add your answer
Q2. How to choose voice alarm system in a building and justify
Ans. 
Choose voice alarm system based on building size, occupancy, layout, and emergency response requirements.
• Consider building size and layout to determine coverage area

• Evaluate occupancy levels to ensure system can reach all occupants

• Assess emergency response requirements to determine necessary features

• Choose a system with clear and intelligible voice messages for effective communication

• Ensure system complies with relevan...read more
Answered by AI
Add your answer

Q1. Codes & standards
Add your answer
Q2. NICET standards
Add your answer

Q1. Basics for ELV security systems
Add your answer
Q2. Details of the work experience
Add your answer

Q1. Basics of ELV security systems
Add your answer

Q1. Basics of ELV security systems
Add your answer

Q1. Salary negotiations, expectations
Add your answer

General Aptitude Test.

Q1. One-on-One with Senior Engineering Manager.
Add your answer
Q2. What do you know about BMS
Ans. 
BMS stands for Building Management System, used to monitor and control building systems like HVAC, lighting, and security.
• BMS helps optimize energy usage and improve building efficiency.

• It can integrate various systems like HVAC, lighting, security, and fire alarms for centralized control.

• BMS can provide real-time data and analytics for better decision-making in building management.

• Examples of BMS vendors include Sieme
Answered by AI
Add your answer

Q1. What do you know about PID Loops.
Ans. 
PID loops are a type of control loop feedback mechanism used in systems to maintain a desired setpoint by adjusting the process inputs.
• PID stands for Proportional-Integral-Derivative, which are the three control terms used in the loop.

• Proportional term responds to the current error value.

• Integral term deals with the accumulation of past errors.

• Derivative term predicts future errors based on the rate of change.

• PID loops...read more
Answered by AI
Add your answer
Q2. Technical round with Hiring Team.
Add your answer