(a) Any public security or securities issued by any public body of the state may be refunded, without an election, by the public body which issued them, or any successor thereof, in the name of the public body which issued the public securities being refunded, but subject to provisions concerning their payment and to any other contractual limitations in the proceedings authorizing their issuance or otherwise appertaining thereto, for any one (1) or more of the following purposes:
(i) For extending the maturities of all or any part of outstanding public securities for which payment is in arrears, or for which there is not, or it is certain there will not be, sufficient money to pay the principal or interest on outstanding public securities as the same respectively become due;
(ii) For reducing interest costs or effecting other economies;
(iii) For reorganizing all or any part of the outstanding public securities of a public body in order to equalize tax levies.