For   mathematics portion they manly put question from 11^th and 12^th syllabus with basic concepts just review the topics and solved some conceptual problem will help you great

  

•               Arithmetic Progression / Geometric Progression / Harmonica Progression :-

    https://www.youtube.com/watch?v=ihMp2hySaG8

•        Permutation and combination:-

    https://www.youtube.com/watch?v=aLbh7jE8xdE

•         Probability :-

     https://www.youtube.com/watch?v=O8i__zLgOWg

 

Calculus

•       Differential :-

     https://www.youtube.com/watch?v=zWA47AqArzk

•                  Integral:-

     https://www.youtube.com/watch?v=lxx_i0zCxrU    and

     https://www.youtube.com/watch?v=xT3sYgf46zE

•                 Vector:-

      https://www.youtube.com/watch?v=xqld3WYVDt0

•              Trigonometry Function:-

  https://www.youtube.com/watch?v=4gxmZH_SGd0

•        Inverse Trigonometric Function:-

       https://www.youtube.com/watch?v=jU4hWqayXvs

•                     Vector Algebra :-

       https://www.youtube.com/watch?v=Wosggu8TPhM

•                            Linear Algebra:-

       https://www.youtube.com/watch?v=ivP-6oicIWU&list=PLF895BD9018BDCDF9

It’s all friends just review all topic give you a great step ahead 

Some of great online source which are useful for preparation for AIR TRAFFIC CONTROLLER FOR AAI 

According to 1^st part PHYSIC and MATHEMATICS  basic concept is all but they put a great then they mention in syllabus

1^st of all for complete syllabus :-

                                   https://www.youtube.com/watch?v=3oK1dktOyzE

For PHYSIC concept I am going to post some great link which I use :-

·       

      Electrostatic :-

https://www.youtube.com/watch?v=F44aXuj-0Cs&list=PL90218C1C2A090DE8

·     Magnetostatics  :-

https://www.youtube.com/watch?v=UT9Rfvv3UA4&list=PLclocfvsabE1W9OFMN82wDTfOzsqOiDM0

·         Ray optics :-

https://www.youtube.com/watchv=AFdwZtmQ2ZY&list=PLCzaIJYXP5YfndYfc4JlDezj4Wjr8bw4S

·        Wave optics:-

https://www.youtube.com/watchv=2tFLOB_IEno&list=PLCzaIJYXP5YeSJvY7MkHAMU4h28av-0e6

·        Alternating current :-

                      https://www.youtube.com/watchv=XolQjPKK43g&list=PLCzaIJYXP5YeiFZuvREe2SXiX1f4gQxjT

·        Nuclear physic:-

https://www.youtube.com/watchv=X2Zta36fJPw&list=PLCzaIJYXP5Yc0aSq7C-DP9OwUF--xxm9N

·        Modern physic:-

https://www.youtube.com/watch?v=imq0-I3db3k&list=PLCzaIJYXP5YfI_CCQEa6UVi1RvrOPRpgR

·     

          Magnetic effect:-

https://www.youtube.com/watch?v=3lusVaE4Gx0&list=PLCzaIJYXP5YcfHgPRwAmwdjJZuyD1qvTo

DUAL NATURE OF RADIATION:-

https://www.youtube.com/watch?v=A1kG4q8d97w&list=PLCzaIJYXP5Yceh67qm5lqQwYGlyzV_s4D

I have done with 1^st part physic these are all which are concern with ATC 

COMPLETE SYLLABUS FOR AIR TRAFFIC CONTROLLER  UNDER ADVT.NO. 07/2015
       PAPER having 2 part each with 60 marks with 120 minutes AND   NO NEGATIVE MARKING

first part having:- 
                                   basic of physic and maths  of application level 

second part having:-
     ·         ENGLISH LANGUAGE (20 MARKS   

     ·    GENERAL INTELLIGENCE / REASONING (15 MARKS)

• GENERAL APTITUDE / NUMERICAL ABILITY ( 15 MARKS)

     ·         GENERAL KNOWLEDGE/AWARENESS ( 10 MARKS)  

http://www.aai.aero/employment_news/JEATCSyllabus0011.pdf                

2) Physical Electronics, Electron Devices and ICs :-

Electrons and holes in semiconductors, Mechanism of current flow in a semiconductor:-https://www.youtube.com/watch?v=03j4ZvQCKWY
Carrier Statistics:
-https://www.youtube.com/watch?v=240GpzwhpzA

Hall effect:-
https://www.youtube.com/watch?v=ZDa1pVPI

Different types of diodes and their characteristics:-
https://www.youtube.com/watch?v=TXjHWGngsME
Junction theory; Bipolar Junction transistor:-
https://www.youtube.com/watch?v=CZlMt2Ta68I
Power switching devices like GTOs, SCRs, power MOSFETS:-
https://www.youtube.com/watch?v=QqFlHhSkayw
MOS and CMOS types:-
https://www.youtube.com/watch?v=zMAaZfh1yz8
Basics of ICs – bipolar:-
https://www.youtube.com/watch?v=2fOtOp4KXbM
Field effect transistors:-
https://www.youtube.com/watch?v=SjeK1nkiFvI

basic of Opto Electronics:-
https://www.youtube.com/watch?v=4rOxldv5nTM

standard book:-

Microelectronic Circuits by Sedrra Smith:-ftp://doc.nit.ac.ir/cee/y.baleghi/Electronics/Microelectronic%20Circuits%20by%20Sedra%20Smith,5th%20edition.pdf

Principles Of Semiconductor Devices :-http://www.eletrica.ufpr.br/graduacao/e-books/Principles%20Of%20Semiconductor%20Devices.pdf

6) Electronic Measurements and Electronic instrumentation:-

Basic concepts, standards and error analysis:-
https://www.youtube.com/watch?v=jR54387Wd6c
Electronic measuring instruments and their principles of working :-https://www.youtube.com/watch?v=jnY9T4Bf9h8
analog and digital, application , comparison, characteristics. Transducers:-https://www.youtube.com/watch?v=71XWsoDl5SA
Measurements of basic electrical quantities and parameters:-
https://www.youtube.com/watch?v=gidW6RgM9b8&list=PLYVDsiuOZP5pSLMHtzNoz8Cgkah083R3k
basics of telemetry for industrial use:-https://mavdisk.mnsu.edu/alleng/communications/DataRadio/p_telemetry.pdf
Electronic measurements of non electrical quantities like pressure, temperature,humidity:- 
https://www.youtube.com/watch?v=Kjrz0eHSs-s 
 https://www.youtube.com/watch?v=9VpimWrPTaM 
Electronic measurements of non electrical quantities like  temperature :- https://www.youtube.com/watch?v=As5kzxkyT24 
 Electronic measurements of non electrical quantities like humidity :-https://www.youtube.com/watch?v=UcyUEnE7v2k
 my favorite lecture:- https://www.youtube.com/watch?v=jhQ1MUVoS4k

standard book:-  hear i am providing some important books link 

•  http://www.sjbit.edu.in/app/course-material/EEE/III/ELECTRICAL%20AND%20ELECTRONICMEASUREMENTS%20AND%20INSTRUME%20%5B10EE35%5D/EEE-III-ELECTRICAL%20AND%20ELECTRONICMEASUREMENTS%20AND%20INSTRUME%20%5B10EE35%5D-NOTES.pdf
• http://www.faadooengineers.com/threads/9440-Electronic-Measurements-Instrumentation-full-notes-pdf-all-units-ebooks