Subject to the applicable provisions of statute and constitution, the Commission may by ordinance or resolution borrow money and issue bonds and other evidence of indebtedness therefor, for any purpose within the scope of powers vested in the city. Such bonds or other evidences of indebtedness shall include, but not be limited to, the following types:
(a) General obligation bonds which pledge the full faith, credit and resources of the City for the payment of such obligations, including bonds for the city's portion of public improvements;
(b) Notes issued in anticipation of the collection of taxes, but the proceeds of such notes may be spent only in accordance with appropriations as provided by Section 8.6.
(c) In case of fire, flood or other calamity requiring an emergency fund for the relief of the inhabitants of the city, or for the repairing or rebuilding of any of its municipal buildings, works, bridges or streets, emergency obligations therefor due in not more than three years;
(d) Bonds issued in anticipation of special assessment district, or may be both an obligation of such special assessment district or districts, and the general obligation of the city;
(e) Mortgage bonds for the acquiring, owning, purchasing, constructing or operating of any public utility as provided in Article 8, Section 23, of the Constitution; provided such bonds shall not impose any liability upon the city but shall be secured only upon the property and revenues of such public utility, including a franchise, stating the terms upon which, in case of foreclosure, the purchaser may operate the same, which franchise shall in no case extend for a longer period than twenty years from the date of the sale of such utility and franchise on foreclosure. Such mortgage bonds shall be sold to yield not to exceed six per cent per annum. A sinking fund shall be created in the event of the issuance of such bonds, by setting aside such percentage of the gross or net earnings of the public utility as may be deemed sufficient for such payment.
(f) Bonds for the refunding of the funded indebtedness of the city;
(g) Revenue bonds as authorized by Public Act 94 of 1933 which are secured only by the revenues from a public improvement and do not constitute a general obligation of the city;