These are some Imp Urls  from u ll get information of Indian Railways Services , Indian Telecom Services , and for Civil and Electrical Engineering:

For Indian Railways (common to all four Branches ):

http://mrunal.org/2013/05/economic-survey-ch10-part-5-of-5-railways-anubhuti-spart-project-unigauge-budget-world-heritage.html

http://mrunal.org/2013/01/economy-dedicated-freight-corridors-dfc-high-speed-rail-corridors-rail-tariff-regulatory-authority-issues-challanges-reforms-indian-railways.html

http://mrunal.org/2014/08/economic-survey-ch11-ppp-reforms-3p-india-highway-nhai-industrial-corridors-dmic-dfc-diamond-quadrilateral.html

http://mrunal.org/2014/08/economic-survey-ch11-railway-budget-infrastructure-tariff-authority-biodiesel-biotoilets-fdi.html

For Indian Telecom Service :

http://mrunal.org/2013/05/economic-survey-ch10-part-2-of-5-telecommunication-and-it-e-nayana-boss-sameer-nixi.html

http://mrunal.org/2012/11/economy-2g-scam-spectrum-refarming-sistema-controversy-allocation-of-natural-resources-explained.html

For Civil Engineering:

http://mrunal.org/2013/05/economic-survey-ch10-part-3-of-5-services-road-transport-shipping-aviation-sethusamudram-fans-greenfield-airports.html

For Electrical Engineering :

http://mrunal.org/2013/05/economic-survey-ch11-infrastructure-part-2-of-2-electricity-renewable-energy-bagasse-cogeneration.html