Career

Criteria for Navratna companies:
The minratnas category-I and schedule A CPSEs have obtained excellent or very good ratings under the MOU system in three of the last five years and have a composite score of 60 or above in the six selected parameters, namely
1- Net profit to net worth.
2- Manpower cost to total cost of production or services.
3- Profit before depreciation, interest, and taxes to capital employed.
4- Profit before interest and taxes to turnover.
5- Earning per share.
6- Intersectoral performance.
Maharatnas
In 2009, the government established that maharatna status would be given to PSEs to delegate enhanced powers to the boards of identified large-size navratna CPSEs to facilitate further expansion of their operations, both in the domestic as well as global market.
Maharatna CPSEs can now decide on investments up to 15 percent of their net worth.
Criteria for Maharatnas
The six criteria for eligibility as Maharatnas are
1- Having Navratna status
2- Listed on the Indian stock exchange with minimum prescribed shareholding under SEBI regulations.
3- An average turnover of more than 25000 crores for the last 3 years
4- It should have an average annual net worth of 15000 crores for the last 3 years
5- It should have an average annual net profit after tax of more than 5000 crores for the last 3 years
6- It should have a significant global presence.
Maharatna companies:
1- National Thermal Power Corporation (NTPC)
2- Oil and Natural Gas Corporation (ONGC)
3- Steel Authority of India Limited (SAIL)
4- Bharat Heavy Electricals Limited (BHEL)
5- Indian Oil Corporation Limited (IOCL)
6- Hindustan Petroleum Corporation Limited (HPCL)
7- Coal India Limited (CIL)
8- Gas Authority of India Limited (GAIL)
9- Bharat Petroleum Corporation Limited (BPCL)
10- Power Grid Corporation of India (POWERGRID)
Navratna companies:
1- Bharat Electronics Limited (BEL)
2- Container Corporation of India Limited
3- Engineers India Limited (EIL)
4- Hindustan Aeronautics Limited (HAL)
5- Mahanagar Telephone Nigam Limited (MTNL)
6- National Aluminium Company Limited (NALCO)
7- National Buildings Construction Corporation Limited (NBCC)
8- National Mineral Development Corporation (NMDC)
9- Neyveli Lignite Corporation Limited (NLC Limited)
10- Rashtriya Ispat Nigam Limited (VIZAG STEEL)
11- Rural Electrification Corporation Limited (REC LTD)
12- Shipping Corporation of India Limited (SCI Limited)
13- Oil India Limited (OIL)
I hope this will help you.

Preparation Tips:
1- Know the complete syllabus.
2- Make a study schedule or Time table according to the syllabus.
3- Know the exam pattern.
4- Solve previous year's papers.
5- Attempt mock tests.
6- Analyze yourself according to your performance on the basis of the mock test results.
7- Use Best Books for a good result. The exam selection process for Hindustan Aeronautics Limited Air Traffic Controller is conducted in two steps: Online Written Test and an Interview round. A merit list is prepared by assigning a weightage of 85 percent marks for online tests and 15 percent marks for interviews. For more details, you may visit the Shiksha HAL ATC exam page. (https://ask.shiksha.com/careers/air-traffic-control-officer-117). I hope this will help you.