Diploma in Electrical Engineering 

at Government Polytechnic, Khunti, Ranchi

Below are some of the general subjects that you can pick during your BTech studies, as these course will advance your technical and practical knowledge:

Mathematics: A mathematical background includes understanding of Calculus, Linear Algebra, Differential Equations and Statistic Stamina.
Physics: Mechanics, electricity & magnetism, kinetics & dynamics, thermodynamics and wave & optics.
Chemistry: This common general chemistry course involves sub-topics such as organic chemistry, inorganic chemistry among others.
Programming: C+,  Python,  Java
Engineering fundamentals: Statistics, dynamics, fluids and their action, heat and its work, properties of matter
Engineering design: Aesthetics, reasoning process, design tools and methods, using of computer-aided design (CAD).

Rest, the subjects taught in the BTech courses would be specialization-specific, based on your chosen field.