  This study focus on the correlation between entrance channel properties and
incomplete fusion reaction. The dynamics of heavy-ion fusion reactions involved
in the interaction of 12C and 16O with 169Tm and 75As targets were examined at
3-8MeV/nucleon specific energies. The influence of projectile energy and
entrance channel mass-asymmetry on the incomplete fusion process in the
interaction of 12C + 169Tm, 16O + 169Tm and 16O + 75As systems at energies
ranging from 4-7.5 MeV/Nucleon was examined in this study. The PACE4
statistical model was used to compare and analyze the measured cross sections
from the EXFOR data base. The values of level density parameter, which is a
sensitive input parameter, were optimized using a representative non-a-emitting
channel from the respective systems. The experimentally measured excitation
functions for representative non {\alpha}-emitting channels were found to be in
good agreement with the theoretical predictions in general. However, for
{\alpha}-emitting channels in the current systems, the measured excitation
functions were greater than the theoretical model code predictions, which could
be attributed to incomplete fusion reaction at these energies. The observed
enhancements in {\alpha}-emitting channels were attributable to the
contribution coming from incomplete fusion reactions. The incomplete fusion
fraction, which explains the relative relevance of incomplete fusion processes,
was attempted to be approximated. The incomplete fusion fraction was shown to
be sensitive to the projectile energy and mass-asymmetry of the entrance
channel. Further, the results showed that incomplete fusion reactions were
higher for more mass-asymmetric systems than mass-symmetric one.
