Orient Green Power DCS Engineer Interview Questions and Answers

Q1. Many question related to gearbox
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Q1. Introduction of basic electricals
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Q2. How wind turbine opearates
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Wind turbines operate by converting the kinetic energy of wind into mechanical power, which is then converted into electricity.
• Wind turns the blades of the turbine, causing them to spin

• The spinning blades turn a shaft connected to a generator

• The generator converts the mechanical energy into electrical energy

• The electricity is then sent to the power grid for distribution

• Wind speed and direction are monitored to optimize
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Q1. Like what is your work experience. Are you willing to climb twice in a day .
Ans. According to your experience needs to give answers Second question- yes
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Q2. Are you willing to work if require to support near by site .
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Q1. As per your experience as previous company they asked questions, but more focos on safety .
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Q2. What is LOTO , Types of LOTO
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LOTO stands for Lockout/Tagout, a safety procedure used to ensure that dangerous machines are properly shut off and not started up again prior to the completion of maintenance or servicing work.
• LOTO involves locking the energy isolating devices with an assigned individual lock and tag to prevent the machine from being turned on.

• Types of LOTO include electrical LOTO, mechanical LOTO, and pneumatic LOTO.

• Examples of LOTO ...read more
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Q1. Previous experiences questions, like DFIG , Converter system, power factor , transformer , lighting system, Earthing system .
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Normal discussion with seniors

Q1. Salary discussion and joining details
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Q1. What is the Transformer
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A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two coils of wire, known as primary and secondary coils

• Primary coil receives electrical energy and creates a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used in power distribution, voltage regulation, and electrical isolation
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Q2. Electrical 8 equipment
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It was very easy ,duration 45 min for 30 questions

Q1. It was of moderate level 2-3 questions
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Q2. What is your name
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Q1. All electrical panel HT <
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Q1. Basic substations design qstns. Earthmat design. Scf calculations. Dslp calculations. Protection sld
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Q2. Lt sld design Liģhting calculation
Ans. 
Lighting calculation is an essential part of lighting design to ensure proper illumination levels.
• Lighting calculation involves determining the number and placement of light fixtures needed to achieve the desired illumination levels in a space.

• Factors such as room size, ceiling height, surface reflectance, and task requirements are taken into consideration.

• Various software tools are available to aid in lighting calcula
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Q3. Ct sizing calculation
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Q4. Battery and charger sizing calculation
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Battery and charger sizing calculation
• Determine the power requirements of the device

• Calculate the battery capacity needed based on power requirements and desired runtime

• Select a charger that can handle the battery capacity and charging time

• Consider factors such as temperature, voltage, and current when selecting components
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Q1. GPRS & GSM COMMANDS, AND USES
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GPRS & GSM commands are used in communication systems for sending and receiving data wirelessly.
• GPRS commands are used for data transmission over mobile networks.

• GSM commands are used for voice calls and text messaging over mobile networks.

• Examples of GPRS commands: AT+CGDCONT, AT+CGATT

• Examples of GSM commands: ATD (dial), ATA (answer), AT+CMGS (send SMS)
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Q2. TYPES OF PROTOCOL USED IN AUTOMATION AND THEIR USES.
Ans. 
Various protocols used in automation include Modbus, Profibus, Ethernet/IP, and DeviceNet.
• Modbus: Widely used for serial communication between devices in industrial automation.

• Profibus: Commonly used in process automation for communication between field devices and controllers.

• Ethernet/IP: Utilized for real-time control and information sharing in industrial automation.

• DeviceNet: Used for connecting industrial devices i
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Q3. SLD DIAGRAM WITH DETAILS
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SLD diagram, or Single Line Diagram, is a simplified representation of a power system showing the electrical connections and components.
• SLD diagrams show the flow of electricity through a system using single lines to represent conductors and symbols for components.

• They are used for planning, designing, and analyzing power systems.

• Common components shown on SLD diagrams include transformers, circuit breakers, switches, ...read more
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Q4. DIFFERENT TYPES OF NETWORKING SWITCH
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Different types of networking switches include managed, unmanaged, layer 2, layer 3, modular, and stackable switches.
• Managed switches allow for more control and customization of network settings.

• Unmanaged switches are plug-and-play devices with no configuration options.

• Layer 2 switches operate at the data link layer and use MAC addresses for forwarding.

• Layer 3 switches operate at the network layer and use IP addresses ...read more
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Q5. IOT USES AND APPLICATION
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IoT (Internet of Things) is the network of physical devices embedded with sensors, software, and other technologies to connect and exchange data.
• IoT is used in smart homes to control appliances remotely.

• IoT is used in agriculture for monitoring soil conditions and crop health.

• IoT is used in healthcare for remote patient monitoring and wearable devices.

• IoT is used in manufacturing for predictive maintenance of machinery...read more
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Q6. TYPES OF SOLAR PANEL AND EFFICIENCY LEVEL.
Ans. 
There are three main types of solar panels: monocrystalline, polycrystalline, and thin-film, each with varying levels of efficiency.
• Monocrystalline solar panels are the most efficient and space-efficient, made from single-crystal silicon.

• Polycrystalline solar panels are less expensive but slightly less efficient, made from multiple silicon crystals.

• Thin-film solar panels are the least efficient but the most flexible an...read more
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Q7. PR ANALYSIS OF SOLAR PLANT
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Analyzing the public relations impact of a solar plant project.
• Evaluate media coverage and public perception of the solar plant project.

• Assess the effectiveness of communication strategies in promoting the benefits of the solar plant.

• Analyze stakeholder feedback and community engagement initiatives.

• Monitor social media sentiment and online discussions related to the solar plant.

• Identify any potential PR challenges or c
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Q8. METHODOLODGY TO INCRESE PR VALUE
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Increasing PR value can be achieved through strategic communication, media relations, and community engagement.
• Develop a comprehensive PR strategy that aligns with the company's goals and values

• Build relationships with key media outlets and journalists to secure positive coverage

• Engage with the community through events, sponsorships, and partnerships

• Utilize social media and digital platforms to amplify PR efforts

• Monito...read more
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Q9. PPC CONTROLLER USES AND ITS DIFFERENT METHOD
Ans. 
A PPC controller is used in power plants to regulate the output of generators and maintain grid stability.
• PPC controllers use various methods such as droop control, PID control, and model predictive control.

• Droop control adjusts the generator output based on the frequency deviation from the nominal value.

• PID control uses proportional, integral, and derivative terms to adjust the generator output.

• Model predictive contro...read more
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Q10. WMS SENSOR AND APPLICATION
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Q11. IO-LIST PREPARATION
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Q12. TRASFORMER TYPES AND LOSSES CALCULATION
Ans. 
Transformer types include step-up, step-down, isolation, and autotransformers. Losses include copper losses and iron losses.
• Transformer types: step-up, step-down, isolation, autotransformers

• Losses: copper losses, iron losses

• Calculation of losses involves determining the resistance of the copper windings and the core losses due to hysteresis and eddy currents
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Q13. SLDC APPLICATION AND ITS USES.
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SLDC (System Development Life Cycle) is a process used in software development to plan, design, build, test, and deploy a system.
• SLDC helps in ensuring that the final product meets the requirements and is of high quality.

• It involves phases like planning, analysis, design, implementation, testing, and maintenance.

• Examples of SLDC models include Waterfall, Agile, Spiral, and V-Model.

• SLDC is used in various industries for...read more
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Q14. BASIC COMMUNICATION DEVICES AND THEIR INTEGRATION WITH SCADA.
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Q15. EMS ANALYSIS AND USES
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EMS analysis involves evaluating and utilizing data from emergency medical services for improving patient care and system efficiency.
• EMS analysis involves examining response times, patient outcomes, resource allocation, and system performance.

• Data collected from EMS can be used to identify trends, assess the effectiveness of protocols, and make informed decisions for improvement.

• Examples of EMS analysis include studyin...read more
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Q1. TRANSFORMER TYPES AND USES?
Ans. 
Transformers are devices used to transfer electrical energy between two or more circuits through electromagnetic induction.
• Types of transformers include step-up, step-down, isolation, autotransformer, and distribution transformers.

• Step-up transformers increase voltage for long-distance transmission, while step-down transformers decrease voltage for household use.

• Isolation transformers provide electrical isolation betwe...read more
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Q2. TRASNFORMER LOSS CALCULATION
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Transformer loss calculation involves determining the copper losses and iron losses in the transformer.
• Calculate copper losses by using the formula: P_copper = I^2 * R, where I is the current flowing through the transformer and R is the resistance of the winding.

• Calculate iron losses by using the formula: P_iron = V^2 / R, where V is the voltage across the transformer winding and R is the resistance of the winding.

• Tota...read more
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Q3. SUBSTATION DESIGNING
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Q4. TYPES OF SOLAR PLANT AND SOLAR PANEL AND ITS APPLICATION
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Types of solar plants include photovoltaic, concentrated solar power, and solar thermal. Solar panels can be monocrystalline, polycrystalline, or thin-film.
• Types of solar plants: photovoltaic, concentrated solar power, solar thermal

• Types of solar panels: monocrystalline, polycrystalline, thin-film

• Applications: residential, commercial, utility-scale

• Examples: Ivanpah Solar Power Facility (concentrated solar power), Solar...read more
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Q5. WMS SENSOR DETAILS AND THEIR APPLICATION
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WMS sensors are used for monitoring and controlling warehouse operations.
• WMS sensors track inventory levels in real-time

• They can detect temperature and humidity levels in storage areas

• Some sensors monitor equipment performance for preventive maintenance

• Examples include RFID sensors for tracking pallets and barcode scanners for inventory management
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Q6. SLDC APPLICATION AND USES?
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SLDC stands for State Load Dispatch Center. It is an organization responsible for real-time monitoring and control of the power system within a specific region.
• SLDCs ensure grid stability by balancing power generation and consumption in real-time.

• They coordinate with power plants, transmission companies, and distribution utilities to maintain grid reliability.

• SLDCs use advanced technologies like SCADA systems to monito...read more
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