These are schemes where the debt paper has a Coupon which keeps changing as per the changes in the interest rates. Thus there is no price risk involved in such paper. We know when rates go up, bond prices go down. However, if the rates increase and so also the coupon changes and increases to the level of the interest rates, there is no reason for the price of the paper to fall, as the investor is compensated by getting higher coupon, in line with the on going market interest rates. Investors prefer Floating Rate funds in a rising interest rate scenario.