MBA/PGDM

Dear Shazia Naaz,
Don't just go keeping salary in the mind because the above-mentioned specialisation is special in its own. Shazia what will be your salary after MBA depends on 3 factors:
1) From where you are doing your MBA (means reputation & recognition of institutions)
2) How you are doing your MBA (means your complete academic background & extra circular activities)
3) To which company you are going to interview (means how globally is that company or how much company can spend on you) and
4) Your specialisation (means how much your specialty is in the market demand) as you asked. Keeping these 4 factors in the mind I want to suggest you that don't just go to specialisation but keep concern for your complete MBA profile. This will definitely help you to grab desired salary package.
Now coming to your question. If you really want to do MBA in marketing go for IIM-A, B, C or FMS or ISB and no one apart from these. For HR, go to ISB and SP Jain and for IB go for IIFT. I know the answer is too long but I hope you find this helpful. For any query! feel free to ask me anytime.
Good luck!

Hi Junaid,
Since you've been working from past 2 years, a full-time MBA will prove to be more beneficial for your profile.
I would recommend that you can opt for MBA in power management (http://www.upes.ac.in/upes_mba/mba_power_management.php) from University of Petroleum and Energy Studies.
MBA power management will be perfect for you as your recent job is also as a power maintenance engineer and this course would justify your current position but will also enhance it by adding more value to the profile.
Another reason why I am recommending you to pursue a full-time course from UPES is, the university well renowned for this particular course and UPES is for sure the best choice for MBA Power Management. Also, the full-time degree with give you the benefit of on campus placement (which UPES excels in) and you might get placed in much better organizations than you recent company. Rest is your call, all the best!