Hitachi Energy Project Engineer Interview Questions and Answers

Global warming impact of co2 in environment

Q1. What is HVDC devices
Ans. 
HVDC devices are high voltage direct current devices used for transmitting electricity over long distances with lower losses.
• HVDC devices convert AC power to DC power for efficient long-distance transmission

• Examples include HVDC converters, HVDC transmission lines, and HVDC substations

• HVDC technology is used in renewable energy projects and interconnecting power grids
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Q2. Why is ps iimportanat for us
Ans. 
PS (Project Schedule) is important for ensuring timely completion of projects, managing resources efficiently, and meeting project deadlines.
• PS helps in planning and organizing project activities in a systematic manner.

• It allows for better resource allocation and management to ensure project completion within budget.

• PS helps in identifying potential delays and taking corrective actions to keep the project on track.

• It e...read more
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Q1. Nil nil nil nil nil
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Q2. No yet remember so on
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Q3. No yet remember so on nil
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Q4. Nil remember yet for it
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Q5. No any memory yet it
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Q1. Describe Otto cycle.
Ans. 
Otto cycle is a four-stroke combustion cycle used in spark-ignition engines.
• It consists of four processes: intake, compression, power, and exhaust.

• During the intake stroke, the fuel-air mixture is drawn into the cylinder.

• In the compression stroke, the mixture is compressed to a high pressure and temperature.

• The power stroke is where the spark plug ignites the mixture, causing it to expand and push the piston down.

• Final...read more
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Q2. What is the difference between 4 stroke and 2 stroke engines?
Ans. 
4 stroke engines have separate intake, compression, combustion and exhaust strokes while 2 stroke engines combine intake and compression strokes and combustion and exhaust strokes.
• 4 stroke engines are more fuel efficient and produce less pollution than 2 stroke engines.

• 2 stroke engines are simpler in design and have fewer parts than 4 stroke engines.

• 2 stroke engines have a higher power-to-weight ratio than 4 stroke eng...read more
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Q1. Earlier experience, technical skills, working principles,safety procedures,
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why are you looking for a change?
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Q5. Where do you see yourself in 5 years?
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Q6. What are your strengths and weaknesses?
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Q7. Tell me about yourself.
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1st we got aptitude test which have 40 tech &20 non tech .....and total 500+ candidate was present.