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Johnson Controls Interview Questions and Answers
186 Interview questions
Follow a structured incident reporting process to restore production systems quickly.
1. Identify the issue: Gather details about the system failure, including error messages and affected services.
2. Notify the IT support team: Use the designated communication channel (e.g., ticketing system, email) to report the incident.
3. Escalate if necessary: If the issue is critical, escalate to senior management or specializ...
My passion for global trade and regulatory frameworks led me to specialize in trade compliance, ensuring lawful and efficient operations.
Interest in Global Trade: I have always been fascinated by how goods move across borders and the regulations that govern these transactions.
Regulatory Knowledge: I enjoy staying updated on trade laws and regulations, such as the Export Administration Regulations (EAR) and Interna...
MBL stands for Master Bill of Lading, a key document in shipping that consolidates multiple bills into one.
MBL is issued by the main carrier to the freight forwarder.
It serves as a receipt for goods and a contract for transportation.
MBL consolidates multiple house bills of lading (HBL) into one document.
Example: A freight forwarder shipping goods from multiple suppliers may use an MBL to streamline the process.
A bill of lading is a legal document between a shipper and carrier detailing the type, quantity, and destination of goods.
Acts as a receipt for the goods being transported.
Serves as a contract between the shipper and the carrier.
Can be negotiable or non-negotiable; negotiable bills can be transferred to others.
Example: A bill of lading for a shipment of electronics from a manufacturer to a retailer.
Successfully collected money from a supplier by negotiating terms and ensuring clear communication regarding the credit note.
Established clear communication with the supplier to discuss the credit note details.
Provided documentation supporting the credit note, such as invoices and delivery receipts.
Negotiated payment terms that were mutually beneficial, ensuring the supplier felt valued.
Followed up regularly with ...
Flow sensors measure the flow rate of liquids or gases, crucial for various applications in industries and research.
1. Differential Pressure Flow Sensors: Measure pressure drop across an obstruction (e.g., orifice plates).
2. Electromagnetic Flow Meters: Use electromagnetic induction to measure conductive fluid flow (e.g., water).
3. Ultrasonic Flow Meters: Utilize ultrasonic waves to measure flow velocity (e.g., in...
Order management is the process of receiving, processing, and fulfilling customer orders.
Receiving orders from customers through various channels such as online, phone, or email
Processing orders by verifying product availability, pricing, and customer information
Fulfilling orders by packaging products, arranging shipment, and updating customers on order status
Managing returns and exchanges, handling customer inqui...
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 -> In...
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 manufacture...
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 tota...
Johnson Controls Interview Experiences
276 interviews found
Md Yasin Ansari
I applied via Campus Placement and was interviewed in Oct 2022. There were 3 interview rounds.
Before apptitude round you will asked to select your stream, so as I'm from ECE I've selected ECE. So questions will be related to that only. In 60 min there were 75 MCQ questions with very bad website UI, So don't get shocked if you see no line breaks in code.
Question are from these domain:
- Microprocessor/Microcontroller (15 questions)
- Digital Electronics (10 questions)
- Analog electronic and Network Theory (10 questions)
- OOPs and psuedocode (15 questions)
- General Apptitude and Logical reasoning (15 questions)
- other basic ECE and CSE questions ( 10 questions)
Out of 70 students they selected only 6 from our college. Try to attempt more than 65 questions to get selected in this round. Fortunately I was selected in apptitude round.
(18 Questions)
- Q1. So before the technical Round they will have 1 hr pre placement talks. After that individual interview will start. If You're from ECE you will strictly be interviewed from ECE subjects only. Partially ther...
- Q2. Different between latches and flip flop
- Q3. Draw Jhonson Counter and explain its working?
- Ans.
Johnson Counter is a digital circuit that counts in a cyclic pattern.
It is a type of shift register with feedback
It has a sequence of n bits that cycle through 2^n-1 states
It is used in digital clocks, frequency dividers, and memory address decoding
Example: 4-bit Johnson counter has a sequence of 0001, 0010, 0100, 1000, 0001, ...
It can be implemented using D flip-flops or JK flip-flops
- Q4. What is the use of counter and How it is different from Shift registers.
- Ans.
Counters are used to count the number of clock pulses and generate output signals. Shift registers are used to store and shift data.
Counters are sequential circuits that count the number of clock pulses and generate output signals.
They can be used in applications such as frequency dividers, event counters, and timers.
Shift registers are used to store and shift data in a serial manner.
They can be used in applications su...
- Q5. Draw XOR gate write truth table
- Q6. What are Universal Gates and draw OR gate from one Universal Gate?
- Q7. Draw block diagram of PID controller
- Q8. Find equivalent resistance of the given circuit
- Ans.
Find equivalent resistance of the given circuit
Identify series and parallel connections
Use Ohm's law to calculate individual resistances
Combine resistances using series and parallel rules
Final answer should be in Ohms
- Q9. Why 8085 is called 8 bit processor
- Q10. No of intrupts in 8085. Explain all
- Ans.
8085 has 5 interrupts. TRAP, RST 7.5, RST 6.5, RST 5.5, INTR
8085 has 5 interrupts: TRAP, RST 7.5, RST 6.5, RST 5.5, INTR
TRAP is a non-maskable interrupt
RST 7.5, RST 6.5, and RST 5.5 are maskable interrupts
INTR is a maskable interrupt and can be enabled or disabled by setting the interrupt enable flip-flop
Interrupts are used to handle external events and improve the efficiency of the system
- Q11. Difference between Microprocessor and microcontroller
- Ans.
Microprocessor is a single chip CPU while microcontroller is a complete computer on a chip.
Microprocessor is used in general purpose computing while microcontroller is used in embedded systems.
Microprocessor has limited on-chip peripherals while microcontroller has on-chip peripherals like timers, ADC, etc.
Microprocessor requires external memory and peripherals while microcontroller has them on-chip.
Examples of micropr...
- Q12. Different flags in 8086 and its high and low condition
- Ans.
Flags in 8086 and their high and low conditions
8086 has 9 flags: Carry, Parity, Auxiliary Carry, Zero, Sign, Trap, Interrupt, Direction, Overflow
Flags can be set or reset based on the result of arithmetic and logical operations
High condition means the flag is set, while low condition means the flag is reset
- Q13. Draw Npn aur pnp transistor
- Ans.
NPN and PNP transistors are drawn using three layers of semiconductor material.
Draw two vertical lines representing the two outer layers of the transistor.
Draw a diagonal line connecting the top of the left line to the bottom of the right line for NPN transistor.
Draw a diagonal line connecting the top of the right line to the bottom of the left line for PNP transistor.
Add arrows to indicate the direction of current flo...
- Q14. Draw and explain different terminal of BJT
- Ans.
Explanation of different terminals of BJT
BJT has three terminals: emitter, base, and collector
Emitter is heavily doped and has the highest concentration of charge carriers
Base is lightly doped and controls the flow of charge carriers from emitter to collector
Collector is moderately doped and collects the charge carriers from the base
The direction of current flow is from emitter to collector
- Q15. Different operating region of BJT
- Ans.
BJT has three operating regions: active, saturation, and cutoff.
Active region: both junctions are forward-biased.
Saturation region: both junctions are reverse-biased.
Cutoff region: base-emitter junction is reverse-biased and base-collector junction is forward-biased.
BJT operates as an amplifier in the active region.
BJT operates as a switch in the saturation and cutoff regions.
- Q16. Difference between BJT and FET
- Ans.
BJT is a current-controlled device while FET is a voltage-controlled device.
BJT stands for Bipolar Junction Transistor while FET stands for Field Effect Transistor.
BJT has a higher gain and faster switching speed than FET.
FET has a higher input impedance and lower noise than BJT.
BJT is commonly used in low-power applications while FET is commonly used in high-power applications.
Examples of BJT include NPN and PNP trans...
- Q17. Different analog to digital conversation techniques
- Ans.
Analog to digital conversion techniques include pulse code modulation, delta modulation, and sigma-delta modulation.
Pulse code modulation (PCM) samples the analog signal at regular intervals and quantizes each sample into a binary code.
Delta modulation (DM) approximates the slope of the analog signal and encodes the difference between the approximated value and the actual value.
Sigma-delta modulation (SDM) oversamples ...
- Q18. This question was from my project on Robotics arm: 1. Explain Block diagram of your Robotics arm 2. Why are you using servo motor on your robotics arm not other motor and different types of motor
Interview Preparation Tips
Best of Luck. 🤟🤟
Skills evaluated in this interview
Anonymous
I appeared for an interview in Jan 2025.
(8 Questions)
- 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...
- 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...
- 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...
- 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...
- 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...
- 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
- 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
- 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...
Interview Preparation Tips
Krishnarjun Ghosh
Selected
Very friendly interviewer. Just focus on basic things.
(2 Questions)
- 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...
- 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...
(1 Question)
- Q1. About family and relocation
Interview Preparation Tips
Sapana Kanaki
I applied via Naukri.com and was interviewed in Aug 2024. There were 2 interview rounds.
(5 Questions)
- 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
- 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
- Q3. Journal entries
- Q4. Basic accounting knowledge
- Q5. Reconciliation related questions
(3 Questions)
- Q1. Previous experience
- Q2. Fixed asset Accounting
- Q3. Accrual Accounting
Interview Preparation Tips
- Accrual Accounting
- Fixed Accounting
- Depreciation
- Journal entries
- Prepaid expenses
If you don't know answer, show enthusiasm that you are quick learner.
Most important point be confident all of the time. Sometime you get counter question, so don't panic try to explain as you know.
All the best of all job Seekers!
Gaurav Patil
I applied via Campus Placement and was interviewed in Sep 2024. There were 4 interview rounds.
Basic questions was asked in this round. In which questions are based on your educational field and aptitude questions are also there.
(2 Questions)
- Q1. Tell me about yourself.
- Ans.
I am a dedicated and hardworking graduate student with a passion for research and learning.
Currently pursuing a Master's degree in [specific field]
Have experience conducting research projects and presenting findings
Interested in furthering my education and contributing to the academic community
- Q2. Why do you want to join us?
- Ans.
I am passionate about your research focus and believe I can contribute meaningfully to your team.
I am impressed by the innovative projects your lab is working on
I have relevant experience and skills that align with your research goals
I am excited about the opportunity to collaborate with experts in the field
(2 Questions)
- Q1. Questions based on general aptitude and application based questions are also asked.
- Q2. What projects you have completed.
(2 Questions)
- Q1. General question are asked based on your family background
- Q2. About your relocation for the job.
Interview Preparation Tips
I applied via Referral and was interviewed in Nov 2024. There were 2 interview rounds.
(4 Questions)
- Q1. Water cooled chillers
- Q2. Water chiller is a device used to lower the temperature of water. Most chillers use refrigerant in a closed loop system to facilitate heat exchange from water where the refrigerant is then pumped to a loca...
- Q3. Both air-cooled chiller and water cooled chiller depend on an air stream as a means of heat transfer. The difference is that the water-cooled chillers or rather the cooling towers use a humid air stream (a...
- Q4. Vapor compression or vapor absorption. Chillers provide a continuous flow of coolant to the cold side of a process water system at a desired temperature of about 50°F (10°C)
(1 Question)
- Q1. My number XXXXX
Interview Preparation Tips
Selected
(1 Question)
- Q1. Journal information
(1 Question)
- Q1. Domain related questions.
(1 Question)
- Q1. Domain Realated
(1 Question)
- Q1. Domain related questions.
Selected
I appeared for an interview before Jul 2024, where I was asked the following questions.
- Q1. Experience related to internship
- Ans.
During my internship, I gained hands-on experience in data analysis, project management, and teamwork in a fast-paced environment.
Conducted data analysis using Excel and Python, improving reporting efficiency by 30%.
Collaborated with a team of 5 on a market research project, presenting findings to senior management.
Developed a dashboard for tracking key performance indicators, enhancing visibility for stakeholders.
Part...
- Q2. Accounting concepts i.e accounting rule etc
Chirag Suryawanshi
100 questions 50 apti 50 tech
(2 Questions)
- Q1. What is Ohms Law?
- Ans.
Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.
Ohm's Law is represented by the formula V = I * R, where V is the voltage, I is the current, and R is the resistance.
It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.
For example, if a circu...
- Q2. Explain your project?
- Ans.
Developed a smart irrigation system using IoT technology.
Used sensors to monitor soil moisture levels
Implemented a microcontroller to control water flow to plants
Designed a mobile app for users to remotely monitor and adjust irrigation settings
(2 Questions)
- Q1. Draw Wiring Diagrams?
- Ans.
Wiring diagrams are visual representations of electrical circuits, showing how components are connected.
Start by identifying all components in the circuit
Draw a diagram showing the connections between components
Use standard symbols for components like resistors, capacitors, and wires
Label each component and connection for clarity
Include a legend if necessary to explain symbols used
- Q2. Why do you choose electrical Engineering?
- Ans.
I chose electrical engineering because of my passion for understanding and working with technology, as well as the opportunity to innovate and solve complex problems.
Passion for technology and innovation
Interest in understanding how things work
Desire to solve complex problems
Opportunity to work on cutting-edge projects
Potential for career growth and development
(1 Question)
- Q1. What are the applications of a Zener diode?
- Ans.
Zener diodes are used for voltage regulation, voltage reference, surge protection, and in voltage stabilizers.
Voltage regulation in power supplies
Voltage reference in circuits
Surge protection in electronic devices
Voltage stabilizers in automotive systems
Overvoltage protection in communication systems
nikita sonnad
Apptitude questions related to core
(2 Questions)
- Q1. About your self
- Q2. About your projects
(1 Question)
- Q1. About your personality and behavoiur
(1 Question)
- Q1. ..................................................mmmmmmm
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