What is the Full Form of PSU ?

PSU - Public Sector Undertaking

Public Sector Undertakings is an entity created by Government of India to undertake the commercial work under the banner of its own. These companies are less concerned with making profits, but more towards nation building and growing the country's economy.

Public Sector Undertakings can be classified into 3 categories :

• Public Sector Enterprises (PSEs)
• Central Public Sector Enterprises (CPSEs)
• Public Sector Banks (PSBs)

Some of the most renowned PSUs of India are :-
Bharat Electronics Ltd.
Bharat Heavy Electricals Ltd.
Bharat Petroleum Corpn. Ltd.
Bharat Refractories Ltd.
Coal India Ltd.
Oil & Natural Gas Corporation Ltd.
Oil India Ltd.
ONGC Videsh Ltd.
Oriental Insurance Company
Power Grid Corporation Of India Ltd.

PSU - Power Supply Unit

Power Supply Unit is used as a voltage regulator, which converts High AC Voltage to low voltage for the small components of Computer (especially Desktop Computers).