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Johnson Controls Hitachi Air Conditioning Diploma Trainee Engineer Interview Questions and Answers

Updated 8 Feb 2022

Johnson Controls Hitachi Air Conditioning Diploma Trainee Engineer Interview Experiences

1 interview found

I applied via LinkedIn and was interviewed in Jan 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - HR 

(6 Questions)

  • Q1. What are your salary expectations?
  • Q2. What is your family background?
  • Q3. Share details of your previous job.
  • Q4. Why should we hire you?
  • Q5. What are your strengths and weaknesses?
  • Q6. Tell me about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - I am currently working in Jonhson Control Hitachi Gujarat on contract basis.

Interview questions from similar companies

Round 1 - Technical 

(3 Questions)

  • Q1. Tell me about your work experience
  • Q2. What's the new VRF tech in Daikin
  • Q3. Ikwtr comparison for chiller and vrf
  • Ans. 

    Chiller and VRF systems differ in their cooling capacity, efficiency, and cost.

    • Chillers are better suited for large commercial buildings with high cooling loads.

    • VRF systems are more efficient and cost-effective for smaller buildings or individual rooms.

    • Chillers use water as a cooling medium, while VRF systems use refrigerant.

    • Chillers require more maintenance and have a longer lifespan than VRF systems.

    • VRF systems offer...

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. How would you handle different meetings at a time.
Round 3 - HR 

(3 Questions)

  • Q1. What are your salary expectations?
  • Q2. What is your family background?
  • Q3. Why are you looking for a change?

Interview Preparation Tips

Interview preparation tips for other job seekers - Have the complete product knowledge.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(1 Question)

  • Q1. Introduction, jobs & responsibility
Round 2 - Technical 

(1 Question)

  • Q1. As per CV all question
Round 3 - HR 

(1 Question)

  • Q1. Once again introduction, pervious company details information & salary discussion

Interview Questionnaire 

2 Questions

  • Q1. What's the function of wire harness.
  • Ans. 

    A wire harness is a collection of wires, cables, and connectors that transmit electrical signals and power between different components in a system.

    • Wire harnesses provide a neat and organized way to route and protect wires in a system.

    • They ensure proper connectivity and prevent wire damage or short circuits.

    • Wire harnesses simplify troubleshooting and maintenance by allowing easy identification and replacement of faulty...

  • Answered by AI
  • Q2. What is the function of sputtering.
  • Ans. 

    Sputtering is a process used in manufacturing to deposit thin films of material onto a surface.

    • Sputtering is a physical vapor deposition technique.

    • It involves bombarding a target material with high-energy ions or atoms.

    • This bombardment dislodges atoms from the target material, which then deposit onto a substrate.

    • Sputtering is commonly used in the production of semiconductor devices, solar cells, and thin film coatings.

    • ...

  • Answered by AI
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Oct 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Branch and general awareness related

Round 2 - Technical 

(1 Question)

  • Q1. Branch related technical
Round 3 - HR 

(1 Question)

  • Q1. About yourself and work related
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Apr 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all Resume tips
Round 2 - Technical 

(1 Question)

  • Q1. About the lean manufacturing
Round 3 - HR 

(1 Question)

  • Q1. 5 year plan for future
  • Ans. 

    My 5 year plan includes gaining expertise in new technologies, taking on leadership roles, and contributing to the growth of the company.

    • Continue learning and staying updated on latest technologies

    • Seek opportunities for leadership roles and mentorship

    • Contribute to company's growth through innovative projects and solutions

  • Answered by AI
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Jun 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Technical 

(3 Questions)

  • Q1. Questiones based on past experience and projects
  • Q2. Reason for switching the job
  • Q3. Knowledge of CAD softwares
Round 3 - Technical 

(7 Questions)

  • Q1. What is sub cooling in air conditioning?
  • Ans. 

    Sub cooling in air conditioning is the process of cooling the refrigerant below its saturation temperature to improve system efficiency.

    • Sub cooling increases the efficiency of the air conditioning system by ensuring the refrigerant is in a liquid state before entering the expansion valve.

    • It helps in preventing flash evaporation of the refrigerant, which can lead to inefficiencies in the system.

    • Sub cooling is typically ...

  • Answered by AI
  • Q2. How is ISEER rating calculated
  • Ans. 

    ISEER rating is calculated based on the weighted average of the cooling performance of an air conditioner under different conditions.

    • ISEER = (Weighted Cooling Capacity at 100% load x 0.4) + (Weighted Cooling Capacity at 75% load x 0.2) + (Weighted Cooling Capacity at 50% load x 0.4)

    • The higher the ISEER rating, the more energy efficient the air conditioner is.

    • ISEER rating helps consumers compare the energy efficiency of...

  • Answered by AI
  • Q3. Draw the Refrigeration cycle
  • Ans. 

    The refrigeration cycle is a thermodynamic cycle used in refrigerators and air conditioning systems to transfer heat from a low temperature to a high temperature environment.

    • The cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

    • The refrigerant enters the compressor as a low-pressure gas and leaves as a high-pressure, high-temperature gas.

    • The high-pressure gas then flows into...

  • Answered by AI
  • Q4. Mainstream refrigerants used in household air conditioning
  • Ans. 

    Mainstream refrigerants used in household air conditioning include R-410A, R-22, and R-134a.

    • R-410A is a popular refrigerant known for its high efficiency and environmental friendliness.

    • R-22, although being phased out due to its ozone-depleting properties, is still commonly found in older air conditioning systems.

    • R-134a is commonly used in automotive air conditioning systems but can also be found in some household units

  • Answered by AI
  • Q5. Explain 1 ton cooling concept
  • Ans. 

    1 ton cooling concept refers to the amount of heat required to melt one ton of ice in a 24-hour period.

    • 1 ton of cooling is equal to 12,000 BTUs per hour

    • It is commonly used in the HVAC industry to measure the cooling capacity of air conditioning systems

    • For example, a 2-ton air conditioner can remove 24,000 BTUs of heat per hour

  • Answered by AI
  • Q6. Relation between current, voltage and power
  • Ans. 

    The relationship between current, voltage, and power is described by Ohm's Law, which states that current is directly proportional to voltage and inversely proportional to resistance.

    • Ohm's Law states that V = I * R, where V is voltage, I is current, and R is resistance.

    • Power (P) is calculated using the formula P = V * I, where P is power, V is voltage, and I is current.

    • In a circuit with a constant resistance, an increa...

  • Answered by AI
  • Q7. Conversion from BTU to watts and vice versa
  • Ans. 

    1 BTU is approximately equal to 0.29307107 watts. To convert BTU to watts, multiply by 0.29307107. To convert watts to BTU, divide by 0.29307107.

    • 1 BTU = 0.29307107 watts

    • To convert BTU to watts, multiply by 0.29307107

    • To convert watts to BTU, divide by 0.29307107

  • Answered by AI
Round 4 - Psychometric Test 

(1 Question)

  • Q1. No questions just test
Round 5 - HR 

(5 Questions)

  • Q1. Would you be comfortable to regularly work extra hours?
  • Q2. Introduction about yourself?
  • Q3. Why do you want to join LG/ consumer durable industry?
  • Q4. If your manager and colleagues are busy with work , how will you manage to learn the things from them?
  • Q5. Present Salary and expected salary

Interview Preparation Tips

Interview preparation tips for other job seekers - Just be confident. And make LG as your last option if you want to go in consumer durable industry.
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed in Dec 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all Resume tips
Round 2 - One-on-one 

(2 Questions)

  • Q1. Discuss about last job role
  • Q2. Ask about product and market
Round 3 - One-on-one 

(2 Questions)

  • Q1. General discussion and last job role
  • Q2. Background and contacts
Round 4 - Technical 

(2 Questions)

  • Q1. How are you fit for this role
  • Q2. Technical knowledge about product
Round 5 - HR 

(2 Questions)

  • Q1. Salary discussion and joining details
  • Q2. Documents for joining
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Job Fair and was interviewed before Dec 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Double-check your resume for any spelling mistakes. The recruiter may consider spelling mistakes as careless behavior or poor communication skills.
View all Resume tips
Round 2 - Aptitude Test 

Normal aptitude test along with a section of technical aptitude

Round 3 - Group Discussion 

Discussion in batches of 8 people on common topics

Round 4 - Technical 

(2 Questions)

  • Q1. Interview with VP
  • Q2. Going through resume BTech Project questions Aspirations Why HVAC
Round 5 - HR 

(1 Question)

  • Q1. Why HVAC Trick questions
  • Ans. 

    HVAC offers a challenging and rewarding career with opportunities for innovation and problem-solving.

    • HVAC allows me to work with complex systems and technologies.

    • I enjoy the problem-solving aspect of HVAC engineering.

    • HVAC offers a diverse range of projects and industries to work in.

    • I find satisfaction in creating comfortable and efficient indoor environments.

    • HVAC is a field that constantly evolves, providing opportunit

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Good company and culture.
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Jan 2023. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Why do you want switch your job?
  • Ans. 

    Seeking new challenges and opportunities for growth in a different environment.

    • Looking for new challenges and opportunities for growth

    • Interested in exploring different technologies and industries

    • Seeking a better work-life balance

    • Want to work in a more collaborative team environment

  • Answered by AI
  • Q2. What is your roles & responsibility in current company??
  • Ans. 

    As a Sr. engineer in my current company, my roles and responsibilities include leading a team of engineers, designing and implementing complex systems, and ensuring project deadlines are met.

    • Leading a team of engineers

    • Designing and implementing complex systems

    • Ensuring project deadlines are met

  • Answered by AI
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Johnson Controls Hitachi Air Conditioning Interview FAQs

How many rounds are there in Johnson Controls Hitachi Air Conditioning Diploma Trainee Engineer interview?
Johnson Controls Hitachi Air Conditioning interview process usually has 2 rounds. The most common rounds in the Johnson Controls Hitachi Air Conditioning interview process are Resume Shortlist and HR.

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Johnson Controls Hitachi Air Conditioning Diploma Trainee Engineer Reviews and Ratings

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5.0/5

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2.5

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3.0

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1.6

Salary

2.5

Job security

4.2

Company culture

1.6

Promotions

4.2

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