J N J Electronics Interview Questions and Answers

One question of 3 hrs with 50 test cases all needed to pass.

Q1. Core computer science concept. DS, operating system, bits
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Q1. What is your family background?
Ans. 
My family background is diverse and multicultural, with members from different professions and backgrounds.
• My father is a doctor and my mother is a teacher.

• I have two siblings, one is an engineer and the other is a lawyer.

• We have relatives living in different countries, including the USA, India, and Australia.

• Our family gatherings are always filled with interesting conversations and cultural exchange.
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Q2. Share details of your previous job.
Ans. 
I worked as a Software Engineer at XYZ Company.
• Developed and maintained software applications using Java and Python.

• Collaborated with cross-functional teams to gather requirements and design solutions.

• Implemented unit tests and performed code reviews to ensure code quality.

• Participated in agile development processes and attended daily stand-up meetings.

• Resolved bugs and issues reported by users and provided technical s...read more
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Q3. Where do you see yourself in 5 years?
Ans. 
In 5 years, I see myself as a senior software engineer leading a team of developers, working on complex projects and contributing to the growth of the company.
• Leading a team of developers

• Working on complex projects

• Contributing to the growth of the company
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Q4. What are your strengths and weaknesses?
Ans. 
My strengths include problem-solving, attention to detail, and teamwork. My weaknesses include time management and public speaking.
• Strengths: problem-solving

• Strengths: attention to detail

• Strengths: teamwork

• Weaknesses: time management

• Weaknesses: public speaking
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Q5. Tell me about yourself.
Ans. 
I am a software engineer with experience in developing and maintaining software applications.
• I have a Bachelor's degree in Computer Science.

• I have worked on various projects using different programming languages such as Java, C++, and Python.

• I am skilled in software development methodologies like Agile and have experience with version control systems like Git.

• I have strong problem-solving and analytical skills, which h...read more
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Q1. Too much technical about RAC
Ans. Latent heat, sensible heat, heat load calculation
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Q2. How to convert a plus chiller to minus chiller package
Ans. 
To convert a plus chiller to a minus chiller package, the refrigeration system needs to be modified to accommodate the change in temperature requirements.
• Modify the refrigeration system to allow for lower temperatures

• Adjust the settings and controls to operate at negative temperatures

• Install additional insulation to maintain lower temperatures

• Replace any components that are not rated for sub-zero temperatures
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Q3. Few technicalities which can help you answer on HVAC segment
Ans. How to design & built a project using Autocad2D
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Q4. Difference between inverter and fixed speed
Ans. 
Inverter changes speed based on load, while fixed speed operates at a constant speed.
• Inverter adjusts motor speed to match the required load, saving energy and reducing wear and tear.

• Fixed speed motors operate at a constant speed regardless of the load, leading to higher energy consumption.

• Inverter technology is commonly used in air conditioners and refrigerators for energy efficiency.

• Fixed speed motors are often found...read more
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Q5. How is pumps HP calculated
Ans. 
Pump HP is calculated using the formula: HP = (Q x H) / (3960 x Efficiency)
• HP = Horsepower of the pump

• Q = Flow rate of the pump in gallons per minute (GPM)

• H = Total head in feet

• Efficiency = Efficiency of the pump as a decimal
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Q6. What is suction head
Ans. 
Suction head is the vertical distance between the pump impeller and the surface of the liquid being pumped.
• Suction head is important in determining the efficiency of a pump.

• It is crucial for ensuring that the pump does not cavitate, which can damage the pump.

• Examples of suction head include static suction head and dynamic suction head.
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Q1. Chiller selection based on which parameters
Ans. 
Chiller selection is based on various parameters such as cooling capacity, efficiency, size, noise level, and cost.
• Cooling capacity: Determine the required cooling capacity based on the size of the space and heat load.

• Efficiency: Look for energy-efficient models to reduce operating costs.

• Size: Consider the physical dimensions of the chiller to ensure it fits in the designated space.

• Noise level: Choose a chiller with lo...read more
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Q2. Inlet & outlet temp for both evap & Cond If aircooled ambient prescription in ISHRAE
Ans. 
The inlet and outlet temperatures for both the evaporator and condenser depend on the ambient conditions prescribed by ISHRAE.
• Inlet and outlet temperatures for the evaporator and condenser will vary based on the ambient conditions specified by ISHRAE standards.

• For air-cooled systems, the inlet temperature for the evaporator is typically higher than the outlet temperature, while the opposite is true for the condenser.

• IS...read more
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Q3. VRF : what is diversity, how it helps to gain more bookings
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Q4. How to design ODU VRF with AHU
Ans. 
Designing ODU VRF with AHU involves selecting compatible units, determining capacity requirements, and ensuring proper installation.
• Select compatible ODU VRF and AHU units based on capacity and efficiency requirements

• Calculate the total cooling and heating load of the space to determine the capacity needed

• Design the refrigerant piping and electrical connections between the ODU VRF and AHU

• Ensure proper ventilation and a...read more
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Q5. How refnets are calculated
Ans. 
Refnets are calculated based on the number of referrals made by an individual.
• Refnets are typically calculated by counting the number of referrals made by an individual.

• The formula for calculating refnets may vary depending on the specific program or system being used.

• Refnets can be used to track the effectiveness of referral programs and the performance of individuals in generating referrals.
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Q6. In chilled water syatem where is PIBCV valves are installed
Ans. 
PIBCV valves are typically installed on the supply side of the chilled water system.
• PIBCV valves are installed on the supply side to control the flow of chilled water into the system.

• They are often located near the chillers or air handling units.

• PIBCV valves help regulate the temperature of the chilled water circulating in the system.

• These valves are crucial for maintaining the efficiency and performance of the chilled
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Q7. What is IK/TR & What is NPLV
Ans. 
IK/TR stands for Installment Key/Total Receivables and NPLV stands for Net Present Loan Value.
• IK/TR is a financial metric used to calculate the ratio of total installment payments to total receivables.

• NPLV is a financial metric used to determine the net present value of a loan.

• IK/TR is important for assessing the repayment capacity of borrowers, while NPLV helps in evaluating the profitability of loans.

• Example: If a bo...read more
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Q8. What is MaX COP of VRF vs Chillers
Ans. 
The MaX COP of VRF systems is typically higher than that of chillers.
• VRF systems generally have a higher COP (Coefficient of Performance) compared to chillers.

• VRF systems can achieve COP values of 4 or higher, while chillers typically have COP values around 2 to 3.

• The higher COP of VRF systems makes them more energy efficient and cost-effective in the long run.
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Q1. Overall Company roles and responsibilities
Ans. 
The overall company roles and responsibilities involve defining job duties, setting expectations, and ensuring accountability.
• Defining job duties for each position within the company

• Setting clear expectations for employees

• Ensuring accountability for tasks and projects

• Providing necessary training and resources for employees to succeed

• Evaluating performance and providing feedback

• Promoting a positive work culture and team
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Q2. Sap process
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Q3. Codes and manpower handling
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Q1. Inventory process
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Q2. Kaizon and 5s
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Q1. Tell me about your self
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Q2. About previous job
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