Complex sentence: Till 2005 Mechanical Engineering was also a part of the courses studied at Ambedkar Polytechnic, but the diploma in Mechanical Engineering and Construction Engineering has now been shifted to Aryabhat Polytechnic and Pusa Polytechnic respectively.
Split into simpler sentences: Till 2005 Mechanical Engineering was also a part of the courses studied at Ambedkar Polytechnic. Diploma in Mechanical Engineering and Construction Engineering which was offered by this Polytechnic has now been shifted to Aryabhat Polytechnic and Pusa Polytechnic respectively.