All notes issued by a municipality under authority of this chapter shall be limited obligations of the municipality, the principal of, redemption premium, if any, and interest on which shall be payable solely from revenues received by the municipality pursuant to the loan agreement or pursuant to notes and deeds of trust delivered to the municipality and from such other funds as may be made available to the municipality for such purpose by the terms of the trust agreement. Notes issued under authority of this chapter shall never constitute an indebtedness of the municipality within the meaning of any state constitutional provision or statutory limitation, and shall never constitute nor give rise to a pecuniary liability of the municipality or a charge against its general credit or taxing powers, and such fact shall be plainly stated on the face of each such note. The notes shall not be considered when computing any limitation of indebtedness of the municipality established by law. All notes issued under the authority of this chapter shall be construed to be negotiable instruments, despite the fact that they are payable solely from a specified source.