1. The moisture content of bambara groundnut affected
the machine performance at the significance level of 5%.
The machine gave the best performance at moisture content
of 5.3% (d.b.).
2. The number of impeller slots affected the machine
performance at the significance level of 5% with the eightslot
impellers giving the best performance.
3. While the impeller slots angulations also affected the
performance of the machine at the significance level of 5%,
the best performance was recorded with the forward facing
impellers.
4. The separating unit could be improved upon to
increase the winnowing efficiency of the machine.