(5)For the purposes of this section,—(a)"electric vehicle" means a vehicle which is powered exclusively by an electric motor whose traction energy is supplied exclusively by traction battery installed in the vehicle and has such electric regenerative braking system, which during braking provides for the conversion of vehicle kinetic energy into electrical energy;(b)"financial institution" means a banking company to which the Banking Regulation Act, 1949 (10 of 1949) applies, or any bank or banking institution referred to in section 51 of that Act and includes any deposit taking non-banking financial company or a systemically important non-deposit taking non-banking financial company as defined in clauses (e) and (g) of Explanation 4 to section 43B.