4.1 Environmental Studies

http://www.ziddu.com/download/276767...UDIES.pdf.html


4.2 PROBABILITY AND STATISTICS

http://www.ziddu.com/download/276785...STICS.pdf.html


4.3 BASIC ELECTRONICS

http://www.ziddu.com/download/276786...ONICS.pdf.html


4.4 MECHANICS OF FLUIDS

http://www.ziddu.com/download/276786...LUIDS.pdf.html


4.5 METALLURGY AND MATERIAL SCIENCE

http://www.ziddu.com/download/276786...IENCE.pdf.html


4.6 THERMAL ENGINEERINGS

http://www.ziddu.com/download/276787...ING-I.pdf.html