Hi Suresh,

MTech Mechatronics means Master of Technology in Mechatronics which is a 2 year Course and BTech in Mechatronics means Bachelor of Technology in Mechatronics which is a 4 year course . Simply MTech is a Master's Degree and BTech is a Bachelor's Degree.

You cann't do MTech in Mechatronics without BTech in Mechatronics

For more info you can refer:-

. Mechatronics Engineering Courses, Subjects, Colleges, Syllabus, Scope, Fees, Eligibility (careers360.com)