NTDC March 2023 Past Interview Questions PDF Download

NTDC March 2023 Past Interview Questions PDF Download

NTDC March 2023 Past Interview Questions PDF Download. Step into the captivating world of the National Transmission & Despatch Company (NTDC) as we unveil the intriguing interviews conducted with aspiring candidates in Lahore.These interviews shed light on the secrets of the power system and the minds of those eager to join the NTDC. From technical queries about transmission lines and transformers to personal anecdotes and career aspirations, this blog post takes you on a thrilling journey of knowledge and discovery. Get ready to be mesmerized by the passion, determination, and dreams of the interviewees, as we unlock the hidden tales behind the grid’s vital operations.

NTDC March 2023 Past Interview Questions PDF Download
NTDC March 2023 Past Interview Questions PDF Download

Past Interview Questions PDF Download




NTDC 2023 Past Interview Questions

NTDC 2023 Interview Questions ( Lahore)

Interview 01:

  1. What do you know about NTDC?
  2. Explain the parameters of a transmission line.
  3. Why do you want to join NTDC?
  4. What is your understanding of ME Kiss chez me ke hae (unclear question)?
  5. What are your intentions regarding your age?
  6. Have you ever visited any grid? If yes, please describe the experience.
  7. Discuss the parameters of a transmission line.
  8. Explain how a power system works.
  9. Tell us about a switchgear.
  10. What is a blackout?
  11. Explain a partial blackout.
  12. Describe island operation.
  13. Tell us about your family.
  14. Discuss your strengths and weaknesses.
  15. Why do you want to work in NTDC?
  16. How do you spend your spare time?

Interview 02:




  1. What is your name?
  2. From which language is your name derived?
  3. Can you explain the meaning of your name?
  4. Explain the working principle of synchronous generators and synchronous motors.
  5. How is induced emf produced?
  6. What are instrument transformers?
  7. Why are current transformer cores left open?
  8. Why are potential transformer cores shorted?
  9. What is series compensation?
  10. Can you recall any recent blackout incident?
  11. What are your strengths?
  12. What are your weaknesses?
  13. Describe your experience of NTDC internship and what you learned from it.
  14. Why do you want this job when your experience is research-based?
  15. Tell us about your family members.
  16. What would you do if a team member is not cooperating in a group project?
  17. Why did you choose Sukkur IBA for graduation, and why not any other university?
  18. What are your hobbies?

Interview 03:

  1. What is your name and city?
  2. Have you visited any grid before?
  3. Tell us about Sakhi Sarwar.
  4. What are surge arrestors and what type of surges do they protect against?
  5. How much switching voltage is required to operate a shunt reactor?
  6. Explain GIS (Gas Insulated Substation).
  7. What is an autotransformer?
  8. In HVAC or HVDC, where do losses tend to be higher?
  9. What are spinning reserves?
  10. How do you absorb Vars?
  11. If you need to inject Vars, what equipment will you use?
  12. Are you willing to accept a posting in Balochistan?
  13. What are your plans for the future?

Interview 04:




  1. What are your test marks and CGPA?
  2. Can you discuss your previous experiences?
  3. Explain the concept of instrument transformers.
  4. How do current transformers and potential transformers function? What happens when we short their secondaries?
  5. How does parallel operation of transformers work?
  6. Can you name different types of transformers?
  7. Describe the types of circuit breakers.
  8. Where was the Football World Cup held?
  9. How much money did Pakistan receive in the World Cup?
  10. Do you know about SAS (Sustainable Development Goals)?
  11. Tell us about ATS (Automatic Transfer Switch), and how it is related to your job.
  12. What role does NEPRA play?
  13. Explain the role of CPPA (Central Power Purchasing Agency).
  14. What are the sources of revenue generation in the power sector?
  15. Can you explain the concept of circular debt?
  16. Define Vars (Volt-Ampere Reactive).
  17. Is Vars consumable?
  18. Explain the concept of switchgear.
  19. What is the difference between GIS (Gas Insulated Substation) and AIS (Air Insulated Substation)? Which one is more expensive?
  20. Do power transformers include switchgear?
  21. Good luck, and thank you for coming.
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Interview 05

  1. Introduce yourself and provide some background.
  2. Discuss your previous jobs at Telenor and Engro.
  3. Tell us about your experience at PESCO.
  4. Why do you want to join NTDC, and have you already appeared for an NTDC interview before?
  5. What are your test scores?
  6. Can you recall electrical concepts from your graduation (2015)?
  7. Explain the concept of power in electrical engineering.
  8. Why is solar energy considered a renewable energy source, and why can’t we get energy from solar during the night?
  9. What books have you read?
  10. What did the Holy Prophet say on the occasion of Ghadeer e Khum?
  11. Why is Test Cricket called “Test”?
  12. Best of luck!

Interview 06:

  1. Introduce yourself.
  2. Explain the Feranti effect and how it can be minimized.
  3. Name some renewable energy sources.
  4. If two 500kV grid stations are connected with a 500kV transmission line, how is power transferred when the potential is the same?
  5. Define quality and specifications.
  6. How many transmission companies are there in Pakistan? Do provinces have their own transmission companies?
  7. How many licenses does NTDC have, and can you name them?
  8. Where is the auto transformer used, and where is the power transformer used?
  9. Define net metering and specify if it is used only for solar energy.
  10. Why is solar energy renewable if we can’t get energy from it during the night?
  11. Do you have any favorite books?
  12. What did the Holy Prophet say on the occasion of Ghadeer e Khum?
  13. Why do we call Test Cricket “Test”?

Interview 07:

  1. Introduce yourself.
  2. What are the types of transformers?
  3. Where are power transformers and auto transformers used (mention the voltage levels)?
  4. Explain what instrument transformers are.
  5. Why is reactive power produced, and how is it useful?
  6. Explain the concept of EMF in a few words.
  7. What is the Ferranti effect, and what are the specific conditions for it to occur?
  8. Describe switchgear and its use.
  9. In a transmission line where the voltage is the same, how does power flow occur?
  10. If a generator suddenly goes out, what happens to the frequency?
  11. Describe the function of an over-frequency relay.
  12. Good luck and thank you.

Interview 09:




  1. Share your experience of the NTDC interview.
  2. Are you currently employed?
  3. Where is your hometown?
  4. Do you know Owais Leghari?
  5. Can you recall the recent elections in Rajanpur, and were they biased or free and fair?
  6. Tell us about SEPCO.
  7. Can you recall the incident in Badaber, and what it was related to (probably related to your experience)?
  8. What does NTDC do?
  9. How does NTDC generate revenue?
  10. What is CPPA, and why is it called CPPAG?
  11. What are the tariffs used by NTDC to collect revenue from DISCOs?
  12. What is NEPRA’s role?
  13. Explain the role of CPPA.
  14. What is circular debt?
  15. What is Var (Volt-Ampere Reactive)?
  16. Can Vars be consumed?
  17. Explain the concept of switchgear.
  18. What is the difference between GIS and AIS, and which one is more expensive?
  19. Do power transformers include switchgear?
  20. What will you do if someone does not cooperate in a group project?

Interview 10:

  1. Did they ask about your test scores and CGPA?
  2. Can you recall any questions related to your previous job at Telenor and Engro?
  3. Explain the concept of Instrument Transformers.
  4. How do Current Transformers (CT) and Potential Transformers (PT) function, and what happens when we short their secondaries?
  5. Explain parallel operation of transformers.
  6. Can you name different types of transformers?
  7. Describe the types of circuit breakers.
  8. Where was the Football World Cup held, and how much money did Pakistan receive from it?
  9. Do you know about SAS (Sustainable Development Goals)?
  10. What do you understand about ATS (Automatic Transfer Switch) and its relevance to your job?
  11. Describe NEPRA’s role.
  12. Explain the concept of fault level.
  13. Good luck and thank you for coming.
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Interview 11:

  1. Can you introduce yourself?
  2. What is your family background?
  3. Which area do you belong to?
  4. Have you ever been to Sukkur?
  5. Have you heard about General Kakar?
  6. Do you know about the winter elections in Rajanpur, and were they biased or free and fair?
  7. What is your nationality?
  8. Have you been to Sukkur before?
  9. When did you arrive in Pakistan?
  10. How much longer do you plan to stay here?
  11. What are your thoughts about NTDC and why did you choose it?
  12. Can you name some grid station components?
  13. Explain the Ferranti effect and how it can be reduced.
  14. Define reactive power and its applications.
  15. What happens if lightning destroys a surge arrester, and how will you protect the transmission line?
  16. Who regulates NTDC?
  17. What is a system operator and who operates NTDC?
  18. Which types of transformers are used in NTDC?
  19. Which transformers are used in the HUBCO New Bong plant, and what were their capacities?
  20. How many machines were there, and what were their capacities?
  21. Thank you, and good luck.

Interview 12:




  1. Describe your NTDC interview experience.
  2. Did they ask about your previous job roles and responsibilities?
  3. What are the technical questions asked in the interview?
  4. Draw an Auto Transformer diagram.
  5. Explain the Double Bus Bar Single Breaker scheme diagram.
  6. Compare AIS and GIS.
  7. Discuss the protection of Transmission Lines.
  8. What is meant by common name for reactance, admittance, and impedance relays?
  9. What happens to short circuit current when there is a fault on a bus bar?
  10. Draw the symmetrical components of L-G fault.
  11. What do you know about NTDC and its role?
  12. Why did you choose NTDC, and how will you contribute to it?
  13. What do you know about NEPRA and its role?
  14. Explain the Circular Debt concept.
  15. Define Vars and discuss whether they are consumable.
  16. Explain the concept of Switchgear.
  17. Compare GIS and AIS and determine which one is more costly.
  18. Does power transformer include Switchgear?
  19. Best of luck, and thank you for coming.

Interview 13:

  1. Can you introduce yourself?
  2. How is the Faraday Law related to your field?
  3. Explain CTBCM (Cold Test with Burden Current Measurement).
  4. Discuss stranded cost and basket price.
  5. What is IAA (Incremental Annual Allowance)?
  6. What is PPIB (Private Power and Infrastructure Board)?
  7. Describe AEDB (Alternative Energy Development Board).
  8. What is the share of Ministry of Power in electricity?
  9. Explain the UOSC (Under-Over Synchronous Compensator).
  10. What is the Ferranti effect?
  11. Describe transformer protections.
  12. Differentiate between power transformers and auto transformers.
  13. What is induced EMF?
  14. How much does a tape changer increase voltage in percentage?
  15. Why do you want to join NTDC?
  16. Do you know the name of a General Kakar who passed away?
  17. Discuss transformers in parallel when impedances are different.
  18. Good luck, and you can go now.

Interview 16:

  1. Introduce yourself and provide some background.
  2. What is the significance of the Faraday effect, and how can it be minimized?
  3. Name some renewable energy sources.
  4. Explain how power is transferred between two 500kV grid stations connected with a 500kV transmission line when their potentials are the same.
  5. Define quality and specifications.
  6. How many transmission companies are there in Pakistan, and do provinces have their own transmission companies?
  7. How many licenses does NTDC hold, and can you name them?
  8. Where is the auto transformer used, and where is the power transformer used?
  9. Define net metering and specify if it is used only for solar energy.
  10. Why is solar energy renewable if we can’t get energy from it during the night?
  11. What are your favorite books?
  12. What did the Holy Prophet say on the occasion of Ghadeer e Khum?
  13. Why do we call Test Cricket “Test”?
  14. Best of luck!
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Interview 17:

  1. Introduce yourself and provide some background.
  2. What are the types of transformers?
  3. Where are power transformers and auto transformers used, and at what voltage levels?
  4. Explain the concept of instrument transformers.
  5. Why is reactive power produced, and how is it useful?
  6. Describe the concept of EMF in a few words.
  7. What is the Ferranti effect, and what are the specific conditions for it to occur?
  8. Discuss switchgear and its use.
  9. How does power flow in a transmission line where the voltage is the same?
  10. What happens to the frequency if a generator suddenly goes out?
  11. Explain the function of an over-frequency relay.
  12. Good luck, and thank you.

Interview 18:




  1. Introduce yourself and provide some background.
  2. What is the significance of the Faraday effect, and how can it be minimized?
  3. Name some renewable energy sources.
  4. Explain how power is transferred between two 500kV grid stations connected with a 500kV transmission line when their potentials are the same.
  5. Define quality and specifications.
  6. How many transmission companies are there in Pakistan, and do provinces have their own transmission companies?
  7. How many licenses does NTDC hold, and can you name them?
  8. Where is the auto transformer used, and where is the power transformer used?
  9. Define net metering and specify if it is used only for solar energy.
  10. Why is solar energy renewable if we can’t get energy from it during the night?
  11. What are your favorite books?
  12. What did the Holy Prophet say on the occasion of Ghadeer e Khum?
  13. Why do we call Test Cricket “Test”?
  14. Best of luck!

Interview 19:

  1. Introduce yourself and provide some background.
  2. Write the formula for fault current on a bus bar.
  3. Explain CTBCM (Cold Test with Burden Current Measurement).
  4. Define stranded cost and basket price.
  5. What is IAA (Incremental Annual Allowance)?
  6. Discuss PPIB (Private Power and Infrastructure Board).
  7. Describe AEDB (Alternative Energy Development Board).
  8. What is the share of the Ministry of Power in electricity?
  9. What is the Ferranti effect?
  10. Describe transformer protections.
  11. Differentiate between power transformers and auto transformers.
  12. What is induced EMF?
  13. How much does a tape changer increase voltage in percentage?
  14. Why do you want to join NTDC?
  15. Do you know the name of a General Kakar who passed away?
  16. Discuss transformers in parallel when impedances are different.
  17. Good luck, and you can go now.

Interview 20:

  1. Share your interview experience at NTDC.
  2. Introduce yourself and provide some background.
  3. Write the formula for fault current on a bus bar.
  4. Explain CTBCM (Cold Test with Burden Current Measurement).
  5. Define stranded cost and basket price.
  6. What is IAA (Incremental Annual Allowance)?
  7. Discuss PPIB (Private Power and Infrastructure Board).
  8. Describe AEDB (Alternative Energy Development Board).
  9. What is the share of the Ministry of Power in electricity?
  10. What is the Ferranti effect?
  11. Describe transformer protections.
  12. Differentiate between power transformers and auto transformers.
  13. What is induced EMF?
  14. How much does a tape changer increase voltage in percentage?
  15. Why do you want to join NTDC?
  16. Do you know the name of a General Kakar who passed away?
  17. Discuss transformers in parallel when impedances are different.
  18. Best of luck!

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