Johnson Controls 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
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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
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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
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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
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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
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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
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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
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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
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Very friendly interviewer. Just focus on basic things.

Q1. What is operational Amplifier?
Ans. 
An operational amplifier is a high-gain electronic voltage amplifier with differential inputs and a single output.
• Operational amplifiers are commonly used in analog circuits for signal processing, filtering, and mathematical operations.

• They have a very high input impedance and a very low output impedance.

• Op-amps can be configured in various ways such as inverting amplifier, non-inverting amplifier, summing amplifier, i...read more
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Q2. What is a transistor
Ans. 
A transistor is a semiconductor device used to amplify or switch electronic signals.
• Transistors are fundamental building blocks of modern electronic devices.

• They can amplify electrical signals, control the flow of current, and act as switches.

• There are two main types of transistors: bipolar junction transistors (BJTs) and field-effect transistors (FETs).

• Transistors are used in a wide range of applications, from compute...read more
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Q1. About family and relocation
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Q1. Tell me about yourself?
Ans. 
I am a dedicated and detail-oriented RTR Analyst with a strong background in financial analysis and reporting.
• I have a Bachelor's degree in Accounting and Finance

• I have 3+ years of experience in reconciliations and financial reporting

• I am proficient in using accounting software such as SAP and QuickBooks

• I have a strong attention to detail and problem-solving skills

• I have excellent communication and teamwork abilities
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Q2. Previous organisation experience?
Ans. 
I have 3 years of experience working as a financial analyst at XYZ Corporation.
• Worked as a financial analyst at XYZ Corporation for 3 years

• Analyzed financial data to provide insights and recommendations

• Prepared financial reports and presentations for senior management
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Q3. Journal entries
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Q4. Basic accounting knowledge
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Q5. Reconciliation related questions
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Q1. Previous experience
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Q2. Fixed asset Accounting
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Q3. Accrual Accounting
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