Question

can a farmer use a pedestal fan to do winnowing comment

Answer 1

A fan is basically an instrument that is used in winnowing grain.

The grain is tossed and moved around while the chaff from the grain gets separated and therefore blown away.

Winnow too separates the grain from the chaff with the help of air currents.

So yes, a pedestal fan can be used to separate the grain and chaff, the farmer just has to make sure that the current is only strong enough to blow away the lighter elements (chaff) instead of the heavier elements (grain).

Answer 2

Yes

Because winnowing is done with wind.

And pedestal fan is with wind.

So it is possible.

But you can't be sure all the time as it is a machine and it can turn to high speed which causes the grains to scatter.