Agricultural/Bioengineering Farm Machinery 2

Question 1

What is the primary function of a PTO (Power Take-Off) on a tractor?

Accepted Answer

To transfer engine power to attached implements

Answer

The PTO shaft transfers rotational power from the tractor engine to implements such as mowers, balers, and augers.

Question 2

Which tillage implement is designed to break up hardpan soil layers below normal plow depth?

Accepted Answer

Subsoiler

Answer

A subsoiler uses narrow shanks to fracture compacted layers (hardpan) at depths of 18–36 inches without inverting the soil.

Question 3

On a grain combine, what component separates grain from the chaff using air flow?

Accepted Answer

Cleaning shoe

Answer

The cleaning shoe uses fans and sieves to blow chaff away while heavier grain falls through to the clean grain elevator.

Question 4

A center-pivot irrigation system covers a field in what geometric shape?

Accepted Answer

Circle

Answer

Center-pivot systems rotate around a fixed central point, irrigating a circular area that can range from 40 to over 500 acres.

Question 5

What does 'drawbar horsepower' measure on a tractor?

Accepted Answer

Actual pulling power delivered at the hitch

Answer

Drawbar horsepower is the usable pulling power at the tractor's hitch, accounting for drivetrain losses and traction efficiency.

Agricultural/Bioengineering Practice Test