Any county, city or incorporated town or village in this state, by vote of a majority of the qualified electors thereof voting thereon, may issue and sell its negotiable interest bearing revenue bonds for the purpose of paying all or part of the cost of purchasing, constructing, extending or improving any of the following: (1) revenue producing water, gas or electric light works, heating or power plants; or (2) airports; to be owned exclusively by the county, city or incorporated town or village, the cost of operation and maintenance and the principal and interest of the bonds to be payable solely from the revenues derived by the county, city or incorporated town or village from the operation of the utility or airport.