Wiki says this...
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Class and type: Vikrant Class
Type: Aircraft Carrier
Displacement:
CV-01 40,000 tonnes[1]
CV-02 65,000 tonnes (conventionally powered carrier) [1]
Length: 262 metres (860ft)
Beam: 60 metres (197ft)
Draught: 8.4 metres (28ft)
Propulsion: 4 General Electric LM2500+ gas turbines, driving four shafts.
Speed: 28 kn (52 km/h)
Range: 7,500 nmi (13,900 km)
Complement: 1,400 (incl air crew)
Armament: 4x Otobreda 76 mm and various point defence SAM and CIWS
Aircraft carried: 29 Mikoyan MiG-29K + HAL Tejas
+ 10 Ka-31 'Helix' or HAL Dhruv
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It will have 29 Fighter jets and 10 helicopters,which is possible as these ships have most of the aircrafts stored below decks and are jacked up to the flight deck when needed..
This will not be a nuclear powered AC..instead a Kerosene Burning Gas turbine with Ruction gearing turning the underwater Propeller..