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PSUS (Public Sector undertaking) The government owned organization are known as public sector undertaking (PUSs) in India.

In a PSU 51% or more of the paid share are owned by the union government of India, or state governments, or both.

PSU’s may be classified as central public enterprises (CPSES), public sector fants (PSBS) or state level public enter prises (SLPES) and regularly provide various employment opportunities in various technical and management areas.

Maharatna PSU’s

The central public sector enterprises (CPSES) fulfilling the following criteria are eligible to be couriered for grant of maharatna status

(I) Having Navratna status.


(ii) Listed on Indian stock exchange with minimum prescribed public shareholding under SEBI regulations.


(iii) Average annual turnover of more than Rs. 25,000 crore, during the last 3 years.


(iv) Average annual net worth of more than Rs. 15,000 crore, during the last 3 years.


(v) Average annual net profit after tax of more than Rs. 5,000 crore, during the last 3 years.


(vi) Should have significant global presence/international operations.


List of Maharatna

  1. National Thermal Power Corporation (NTPC)

  2. Oil and Natural Gas Corporation (ONGC)

  3. Steel Authority of India (SAIL)

  4. Bharat Heavy Electricals Ltd. (BHEL)

  5. Indian Oil Corporation Limited(IOCL)

  6. Coal India Limited(COL)


Navratna PSU’s

The central public sector enterprises (CPSES) fulfilling the following criteria are eligible to be couriered for grant of Navratna status.

(i) net profit to net worth,

(ii) manpower cost to total cost of production/services,

(iii) profit before depreciation, interest and taxes to capital employed,

(iv) profit before interest and taxes to turnover,

(v) earning per share and

 (vi) inter-sectoral performance.

  1. Bharat Electronics

  2. Bharat Petroleum (BPCL)

  3. Container Corporation of India (CONCOR)

  4. Engineers India

  5. Hindustan Aeronautics

  6. Hindustan Petroleum (HPCL)

  7. Mahanagar Telephone Nigam (MTNL)

  8. National Aluminium Company (NALCO)

  9. National Buildings Construction Corporation (NBCC)

  10. National Mineral Development Corporation (NMDC)

  11. Neyveli Lignite Corporation

  12. Oil India

  13. Power Finance Corporation

  14. Power Grid Corporation of India

  15. Rashtriya Ispat Nigam (RINL)

  16. Rural Electrification Corporation

  17. Shipping Corporation of India


Miniratna PSUS

The central public sector enterprises (CPSES) made profit in the last three years continuously and have positive net worth are eligible to be considered for grant of miniratna status.

List of Miniratna-I

  1. Airports Authority of India

  2. Antrix Corporation

  3. Balmer Lawrie

  4. Bharat Coking Coal

  5. Bharat Dynamics

  6. Bharat Earth Movers

  7. Bharat Sanchar Nigam (BSNL)

  8. Bridge and Roof

  9. Central Warehousing Corporation

  10. Central Coalfields

  11. Chennai Petroleum Corporation

  12. Cochin Shipyard

  13. Dredging Corporation of India

  14. Kamarajar Port

  15. Garden Reach Shipbuilders & Engineers

  16. Goa Shipyard

  17. Hindustan Copper

  18. HLL Lifecare

  19. Hindustan Newsprint

  20. Hindustan Paper

  21. Housing and Urban Development Corporation

  22. HSCC

  23. India Tourism Development Corporation

  24. India Trade Promotion Organisation

  25. Indian Rare Earths

  26. Indian Railway Catering and Tourism Corporation

  27. Indian Renewable Energy Development Agency

  28. Ircon International

  29. Kudremukh Iron Ore Company

  30. Mazagaon Dock Limited

  31. Mahanadi Coalfields

  32. MOIL

  33. Mangalore Refinery and Petrochemicals Limited

  34. Mishra Dhatu Nigam

  35. MMTC Ltd

  36. MSTC Ltd

  37. National Fertilizers

  38. National Seeds Corporation

  39. NHPC Limited

  40. Northern Coalfields

  41. North Eastern Electric Power Corporation Limited

  42. Numaligarh Refinery

  43. ONGC Videsh

  44. Pawan Hans

  45. Projects and Development India Limited

  46. RailTel Corporation of India

  47. Rail Vikas Nigam Limited

  48. Rashtriya Chemicals & Fertilizers

  49. RITES

  50. SJVN Ltd.

  51. Security Printing and Minting Corporation of India

  52. South Eastern Coalfields

  53. State Trading Corporation of India

  54. Telecommunications Consultants India

  55. THDC Ltd

  56. Western Coalfields

  57. Water and Power Consultancy Services

List of Miniratna-II

  1. Bharat Pumps & Compressors

  2. Broadcast Engineering Consultants India

  3. Central Mine Planning and Design Institute

  4. Central Railside Warehouse Company

  5. Educational Consultants India

  6. Engineering Projects

  7. FCI Aravali Gypsum and Minerals (India) Limited

  8. Ferro Scrap Nigam Ltd

  9. HMT (International) Ltd

  10. Indian Medicines & Pharmaceuticals Corporation Limited

  11. MECON

  12. Mineral Exploration Corporation Ltd

  13. National Film Development Corporation of India

  14. National Small Industries Corporation

  15. PEC Ltd

  16. Rajasthan Electronics & Instruments Ltd

Exam pattern

  • 30% - 40%: Nontechnical subjects

  • 60%-70%: Technical subject

Nanotech subjects

(i) English

(ii) Maths (only Airthematic)

(iii) Reasoning

(iv) General Awareness

  • Geography

  • Polity

  • History

  • Economics

  • Biology

  • Physics

  • Chemistry

Technical Subjects





Engineering Mechanics

Soil Mechanics

Circuit theory

Physical Electronics, Electron

Strength of Material

Building Materials

Measurements & Instrumentations

Electronics Devices and ICs devices

Theory of Machines

Estimating Costing and Valuation

Electric Machines

Signals and System

Machine Design


Power System

Network theory

Basics Thermodynamics


Utilization of Electrical Engineering

Electromagnetic Theory

Internal Combustion Engine

Irrigation Engineering

Basic Electronics

Electronic Measurements and instrumentation

Power Plant Engineering

Transportation Engineering

Estimation & Costing

Analog Electronic

Fluid Mechanics & Machinery

Environmental Engineering

Control System

Digital Electronic Circuits

Production Process

Theory of Structure

Power Electronics

Control Systems

Refrigeration and Air Conditioning

Concrete Technology

Analog Electronics


Heat and Mass Transfer

R.C.C. Design

Digital Electronics


Industrial Engineering

Steel Design



Basics of CIM/CAD/CAM

Structural Engineering



Measurement and Metrology


Electronic Devices & Circuits




Success Stories

Selected Students

Rank : 1
vipul tiwari
tspsc (astt. engineer)
abhishek singh
ssc je
jayprakash yadav
rrb chandigarh(je)
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