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I was interviewed before Jan 2024.
I am passionate about troubleshooting and problem-solving, and I enjoy working with cutting-edge technology.
I have a strong background in technical support and enjoy helping customers resolve issues.
I am excited about the opportunity to work with a dynamic team and contribute to the success of the company.
I am eager to learn and grow in my career, and I believe this role will provide me with the challenges and opportun
I plan to stay at Hitachi for the long term, as I am committed to growing and advancing within the company.
I am dedicated to my career at Hitachi and see a lot of potential for growth within the company
I have a strong interest in the industry and believe Hitachi is a great fit for my skills and goals
I am excited about the opportunities for advancement and development at Hitachi
I applied via Company Website and was interviewed before Dec 2021. There were 2 interview rounds.
Rectifier converts AC to DC while Inverter converts DC to AC.
Rectifier section uses diodes to convert AC to DC.
Inverter section uses transistors to convert DC to AC.
Rectifier section is used in power supplies while Inverter section is used in UPS.
Rectifier section is used in welding machines while Inverter section is used in air conditioners.
Both sections are used in electric vehicles to convert power from battery to m
Harmonics are electrical voltages or currents that are multiples of the fundamental frequency.
Harmonics can cause problems in electrical systems, such as overheating of equipment and interference with communication systems.
They are often caused by non-linear loads, such as computers, variable speed drives, and LED lighting.
Harmonic distortion can be measured using a power quality analyzer.
Mitigation techniques include ...
Top trending discussions
posted on 24 Nov 2020
Numericals related questions
Regarding alternators and generators
I applied via Naukri.com and was interviewed in Dec 2023. There were 2 interview rounds.
By conducting thorough system analysis, testing, and utilizing diagnostic tools.
Conduct thorough system analysis to understand the system's functionality and potential issues.
Perform testing to identify any abnormalities or malfunctions in the system or equipment.
Utilize diagnostic tools such as multimeters, oscilloscopes, and software programs to pinpoint errors.
Review error logs and system documentation for clues on ...
The direction a motor runs depends on the type of motor and the wiring configuration.
The direction of rotation can be determined by the motor's design and the direction of the current flow.
Some motors can run in both clockwise and counterclockwise directions depending on the wiring.
Reversing the polarity of the power supply can change the direction of rotation in some motors.
Delta connection in motor terminal box is made by connecting the three motor terminals in a triangular configuration.
Connect the three motor terminals labeled U, V, and W in a triangular configuration.
Ensure proper insulation and secure connections to prevent short circuits.
Use appropriate tools and follow manufacturer's guidelines for wiring.
Double check the connections before powering up the motor to avoid damage.
Con...
I applied via LinkedIn and was interviewed in Mar 2024. There were 2 interview rounds.
I applied via Recruitment Consultant and was interviewed in May 2021. There was 1 interview round.
My action plan to satisfy customers involves understanding their needs, providing prompt and efficient service, and ensuring their satisfaction through effective communication and follow-up.
Listen actively to customers to understand their requirements
Respond promptly to customer inquiries and service requests
Provide clear and concise explanations of technical issues and solutions
Ensure timely resolution of customer pro...
I applied via Naukri.com and was interviewed in Jul 2021. There were 3 interview rounds.
A circuit breaker is an electrical switch that automatically interrupts the flow of current in a circuit in case of an overload or short circuit.
It is a safety device used to protect electrical circuits from damage caused by excess current flow.
It works by detecting the excess current and interrupting the flow of electricity to prevent damage to the circuit.
Circuit breakers are commonly used in homes, buildings, and in...
A relay is an electrically operated switch that uses an electromagnet to mechanically open or close a circuit.
Relays are commonly used in control circuits to switch high voltage or current using a low voltage signal.
They can be used to control motors, lights, and other electrical devices.
Relays can be classified based on their construction, contact configuration, and operating voltage.
Examples of relays include electro...
Yes, I know how to operate air circuit breaker.
I am familiar with the basic components of an air circuit breaker.
I know how to turn on and off the breaker.
I am aware of the safety precautions that need to be taken while operating the breaker.
I have experience in troubleshooting and repairing air circuit breakers.
I am knowledgeable about the different types of air circuit breakers and their applications.
Relay is an electrically operated switch that opens or closes circuits electronically.
Relays are used to control high voltage circuits with low voltage signals.
They are used in automation systems, power plants, and automobiles.
Examples include electromagnetic relays, solid-state relays, and thermal relays.
A contactor is an electrical device used to control the flow of electricity in a circuit.
Contactor is used to switch on and off electrical power to a load.
It is commonly used in motor control circuits to control the operation of motors.
Contactor helps in protecting electrical circuits from overload or short circuits.
It provides a safe and reliable method of controlling high-power electrical loads.
Contactor can be manua...
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