Hitachi Energy Mechanical Engg. Design Interview Questions and Answers for Experienced

I pushed myself out of my comfort zone when I had to present a project to a large audience.

• I prepared extensively for the presentation, including practicing in front of a mirror and with friends.

• I focused on my breathing and body language to help calm my nerves.

• During the presentation, I made eye contact with the audience and used visual aids to keep them engaged.

• Afterwards, I received positive feedback and felt proud ...read more

My strengths are attention to detail, problem-solving, and creativity. My weaknesses are public speaking and time management.

• Strengths: attention to detail, problem-solving, creativity

• Weaknesses: public speaking, time management

• Strength: I am very detail-oriented and can catch mistakes that others might miss

• Strength: I enjoy finding solutions to problems and thinking outside the box

• Strength: I am creative and can come ...read more

During a fire incident, I quickly assessed the situation and directed people to safety.

• Remained calm and composed during the emergency

• Evaluated the situation and identified potential dangers

• Directed people to safety and ensured everyone was accounted for

• Coordinated with emergency services to provide necessary information

• Followed up with affected individuals to provide support and assistance

Yes, I have leadership qualities and responsibilities.

• I have experience leading teams and delegating tasks

• I prioritize clear communication and setting expectations

• I am able to motivate and inspire team members

• I take responsibility for the success of the team

• I am open to feedback and willing to make adjustments to improve team dynamics

Yes, what are the biggest challenges your design team is currently facing?

• Ask about current challenges

• Shows interest in company's design process

• Can help tailor answers to interviewer's needs

VCB, SF6, CT, PT, LA are all electrical equipment used in power systems.

• VCB stands for Vacuum Circuit Breaker and is used for switching and protection of electrical power systems.

• SF6 is a gas used as an insulating medium in high voltage electrical equipment such as circuit breakers, switchgear, and transformers.

• CT stands for Current Transformer and is used to measure electrical current in power systems.

• PT stands for Po...read more

Copper and aluminum are commonly used conductors in transmission.

• Copper is an excellent conductor due to its high electrical conductivity.

• Aluminum is also widely used as it is lightweight and cost-effective.

• Other conductors like silver and gold are rarely used due to their high cost.

• Copper-clad steel conductors are used in specific applications where strength is required.

Different types of tests related to transformers include routine tests, type tests, and special tests.

• Routine tests are performed on every transformer and include measurement of winding resistance, insulation resistance, and voltage ratio.

• Type tests are performed on a sample transformer to verify its design and include temperature rise test, impulse test, and short-circuit test.

• Special tests are performed on transforme...read more

Different types of faults refer to the various abnormalities that can occur in an electrical system.

• Short circuit fault

• Open circuit fault

• Ground fault

• Overvoltage fault

• Undervoltage fault

• Overcurrent fault

• Undercurrent fault

Relays are switches that open and close circuits electromechanically or electronically. There are various types of relays.

• Electromechanical relays

• Solid-state relays

• Reed relays

• Polarized relays

• Time-delay relays

• Overload protection relays

• Mercury-wetted relays

• Latching relays

• Machine tool relays

• Thermal relays