Johnson Controls Interview Questions, Process, and Tips

Q1. Asked about my current and previous roles
Add your answer

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.

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...read more
Add your answer
Q2. Different between latches and flip flop
Ans. 
Latches and flip flops are sequential logic circuits used to store data. Flip flops are edge-triggered while latches are level-triggered.
• Latches are level-triggered and can be transparent or opaque

• Flip flops are edge-triggered and can be positive or negative edge-triggered

• Latches are simpler and faster than flip flops

• Flip flops are more reliable and less prone to glitches than latches

• Examples of latches include SR latc...read more
Answered by AI
View 2 more answers
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
Answered by AI
Add your answer
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...read more
Answered by AI
Add your answer
Q5. Draw XOR gate write truth table
Ans. 
Draw XOR gate truth table
• XOR gate has two inputs and one output

• Output is 1 only if inputs are different

• Truth table: 0 XOR 0 = 0, 0 XOR 1 = 1, 1 XOR 0 = 1, 1 XOR 1 = 0
Answered by AI
Add your answer
Q6. What are Universal Gates and draw OR gate from one Universal Gate?
Ans. 
Universal Gates are gates that can be used to implement any logic function. OR gate can be drawn from a Universal Gate.
• Universal Gates include NAND and NOR gates

• NAND and NOR gates can be used to implement any logic function

• OR gate can be drawn from a NAND gate by connecting both inputs together

• OR gate can be drawn from a NOR gate by connecting both inputs together and inverting the output
Answered by AI
View 1 more answer
Q7. Draw block diagram of PID controller
Ans. 
A PID controller is a feedback control loop that calculates an error value as the difference between a desired setpoint and a measured process variable.
• The block diagram of a PID controller consists of three main components: the proportional, integral, and derivative terms.

• The proportional term produces an output that is proportional to the error signal.

• The integral term produces an output that is proportional to the i...read more
Answered by AI
Add your answer
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
Answered by AI
Add your answer
Q9. Why 8085 is called 8 bit processor
Ans. 
8085 is called 8 bit processor because it can process 8 bits of data at a time.
• 8085 has an 8-bit data bus and can process 8 bits of data at a time

• It has an 8-bit accumulator and can perform arithmetic and logical operations on 8-bit data

• It has 16-bit address bus which can address up to 64 KB of memory

• Examples of 8-bit processors include Intel 8080, Zilog Z80, and MOS Technology 6502
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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...read more
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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...read more
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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.
Answered by AI
Add your answer
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...read more
Answered by AI
Add your answer
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 ...read more
Answered by AI
Add your answer
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
Add your answer

The Topics can be easily found in Indiabix

Q1. Be Confident while speaking
Add your answer

Q1. Tell me about yourself
Add your answer

Prepare models and v ray settings

Q1. Refrigration cycle
Add your answer
Q2. Ahu system in hvac
Ans. 
An Ahu system in HVAC refers to an Air Handling Unit which is a device used to regulate and circulate air as part of a heating, ventilation, and air conditioning system.
• An Ahu system typically consists of a blower, heating or cooling elements, filter racks or chambers, dampers, and sound attenuators.

• It is responsible for taking in outside air, conditioning it, and then distributing it throughout a building.

• Ahu systems ...read more
Answered by AI
Add your answer

Quants,Instrumentation question

Q1. Question related to process Control,sensors and Transducers
Add your answer