What is the Meaning of PSU??? Which are the companies come under the PSUs???????????

Public sector undertaking (PSU) companies are government-owned corporations (company in the public sector).

These companies give recruitments to a large number of people and they are mainly run by state or country. They provide recruitments through a exam conducted an all India basis. some of the PSU'S are:

National Insurance Company
Fresh & Healthy Enterprises
Hindustan Salts Limited (Sambhar salt)
Indian Railway Finance Corporation
Oil & Natural Gas Corporation
Heavy Engineering Corporation
Balmer Lawrie & Company
Educational Consultants India Limited
Indian Medicines & Pharmaceutical Corporation
Housing and Urban Development Corporation
Engineers India
Bihar Drugs & Organic Chemicals
Certification Engineers International
National Jute Manufactures Corporation
British India Corporation
National Aviation Company of India
Central Coalfields Limited
Narmada Hydroelectric Development Corporation
Central Electronics Limited
Rites
Hindustan Aeronautics
NTPC Electric Supply Company
Agriculture Insurance Company of India[5]
Hindustan Cables Limited
Cochin Shipyard
Bharatiya Nabhikiya Vidyut Nigam
National Informatics Centre Services Incorporated
Bharat Refractories
Hooghly Dock and Port Engineers Limited
KIOCL
HMT Bearings Limited
National Textile Corporation
Engineering Projects (India) Limited
I A L Airport Services
Orissa Drugs & Chemicals
North Eastern Regional Agricultural Marketing Corporation
Shipping Corporation of India
Hotel Corporation of India
Hindustan Prefab Limited
Donyi Polo Ashok Hotel
National Minorities Development and Finance Corporation
Coastal Maharashtra Mega Power
Cotton Corporation of India
Mangalore Refinary & Petrochemicals
Biecco Lawrie
Karnataka Antibiotics & Pharmaceuticals
Ghogarpalli Integrated Power Company Limited
Indian Rare Earths Limited
HMT Machine Tools Limited
IDPL (Tamil Nadu) Limited
Konkan Railway Corporation
Oriental Insurance Company
National Film Development Corporation of India
National Small Industries Corporation
Electronics Corporation of India
Hindustan Fluorocarbons Limited
Pawan Hans Helicopters
Madras Fertilizers Limited
Airports Authority of India
Scooters India
Mineral Exploration Corporation
Coastal Tamil Nadu Power
Hooghly Printing Company
Bharat Pumps & Compressors
Rashtriya Chemicals & Fertilizers
Tehri Hydro Development Corporation
Sponge Iron India
State Trading Corporation of India
HMT Watches Limited
Hindustan Copper Limited
NTPC Vidyut Vyapar Nigam
National Safai Karamcharis Finance and Development Corporation
Bharat Immunologicals and Biologicals Corporation
India Tourism Development Corporation
Nationalised Banks
Garden Reach Shipbuilders & Engineers
Mumbai Railway Vikas Corporation
Bridge and Roof Company
Tamil Nadu Trade Promotion Organisation
Numaligarh Refinary
HSCC
Coastal Karnataka Power
Western Coalfields
Central Cottage Industries Emporium
HMT (International) Limited
Brahmaputra Valley Fertilizer Corporation
Fertilizer Corporation of India Limited
Vignyan Industries
Hindustan Steelworks Construction Limited
Security Printing and Minting Corporation of India Limited
NTPC Hydro
Power Grid Corporation of India
Cement Corporation of India
Bokaro Kodarma Maithon Transmission Company
PEC
Millennium Telecom
Sakhigopal Integrated Power Company
Rajasthan Drugs & Pharmaceuticals
Bharat Coking Coal
Hindustan Antibiotics