In a single fixed pulley, the velocity ratio is always less than the mechanical advantage.
We know, that incase of single fixed pulley, distance by the effort is equal to distance moved by the load upward. If dE = d, dL = d
V.R = dEdL = dd = 1
Since, L = T and E = T
But, M.A = LoadEffort = TT = 1
This is applicable in ideal conditions only. In actual practice to lift load, effort needed is more than load. Hence, V.R > M.A