PPN Power Generating Company Interview Questions and Answers

Q1. Earthmat calculation
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Q2. Cable sizing calculation
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Q3. Insulation Coordination study
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Q4. Battery and charger calculation
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Q1. Short circuit calculations
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Q2. Insulation coordinate study
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Q1. Voltage for motors
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Q2. Used to transfer billore
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Q3. Prafull billore- early Life, career, journey so far
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Q4. DC motor - 12to 24volt direct current Low voltage Servo motor -24to96 volt direct current Single phase motor-115to 230 volt 3phase motor- 230to 46o volt
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Q1. Topologies on which you worked
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I have worked on various network topologies including star, bus, ring, mesh, and hybrid.
• Star topology: centralized network with all nodes connected to a central hub

• Bus topology: all nodes connected to a single cable

• Ring topology: each node connected to exactly two other nodes forming a ring

• Mesh topology: every node connected to every other node

• Hybrid topology: combination of two or more different topologies
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Q2. Power loss calculations, Dead time selection
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Q1. What is current
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The question is unclear and needs more context to provide a specific answer.
• Request clarification on what 'current' refers to (e.g. current trends, current challenges, current practices)

• Provide examples of how you stay current in your field (e.g. attending conferences, reading industry publications)

• Discuss the importance of staying current in employee relations to adapt to changing workforce dynamics
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Q2. Current is a flow though the
Ans. What is current unit
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Q3. Current unit Ampere
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Q4. Two types 1 auto machine tapping &/hand tapping
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Q5. Two typed tapping
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Q6. Auto matic tapping
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Q1. What do you know about 4th partner
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4th partner is a strategic consulting firm specializing in business development and growth strategies.
• 4th partner offers services such as market research, competitive analysis, and strategic planning.

• They work with companies to identify opportunities for growth and develop actionable plans to achieve their goals.

• 4th partner has a team of experienced consultants who bring a wealth of knowledge and expertise to their cli...read more
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Q2. Will ask you to sell random stuff
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Q1. How much do you expect
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Q1. Pv Solar plant Commissioning process
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The commissioning process of a PV solar plant involves testing, adjusting, and optimizing the system to ensure it is functioning properly.
• Testing the electrical components and connections to ensure they are working correctly

• Adjusting the system settings to maximize efficiency and output

• Optimizing the performance of the solar panels to achieve the desired energy production

• Checking for any potential issues or malfunction
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Q2. Transformer types of testing
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Transformer types of testing include routine tests, type tests, and special tests to ensure proper functioning and safety.
• Routine tests include insulation resistance, turns ratio, and polarity tests.

• Type tests are conducted on a prototype to verify design parameters like temperature rise and short-circuit withstand.

• Special tests may include impulse voltage, partial discharge, and noise level tests.

• Testing ensures trans...read more
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Interview elicits interpretations of the world

Q1. All testing parameters
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Testing parameters refer to the specific conditions and variables used in conducting experiments or analyses.
• Testing parameters include factors such as temperature, pressure, pH, concentration, and time.

• These parameters are crucial in determining the accuracy and reliability of test results.

• For example, in a chemical reaction, the temperature and concentration of reactants are important testing parameters.

• Adjusting tes...read more
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Q2. Job responsibility
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Q3. Manpower management
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Q1. Relay Gradation
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Q2. Transformer protection
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Q3. Meter testing as per IS standard
Ans. 
Meter testing as per IS standard involves verifying the accuracy and functionality of meters used for measuring electricity, water, gas, etc.
• Meter testing should be conducted in accordance with the relevant IS standard (e.g. IS 13779 for electricity meters).

• Testing involves checking the accuracy of the meter readings under various load conditions.

• Calibration of the meter should be done periodically to ensure accurate m...read more
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Q1. Differential relay configuration & Testing
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Q2. Distance relay configuration and Testing
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Distance relay configuration involves setting the relay to operate based on the distance of a fault from the relay location.
• Distance relay settings include reach, time delay, and pickup values.

• Testing involves injecting a fault at a known distance and verifying the relay operates within the set parameters.

• Secondary injection testing can be used to simulate fault conditions for testing purposes.
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Q3. Cable Fault location finding
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