(5)For the purposes of this section,—(a)"electric vehicle" means a vehicle 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 applies, or any bank or banking institution referred to in section 51 of that Act and includes a non-banking financial company.