Agricultural/Bioengineering Cheat Sheet 2026

The 30 highest-yield Agricultural/Bioengineering facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Electronic draft control on a tractor's three-point hitch automatically adjusts implement depth based on: → Changes in draft force sensed at the lower links
2. Which of the following tasks does the bulk milk transporter, who is essential to milk handling, not perform? → Making sure equipment has been cleaned correctly
3. Natural ventilation in animal housing relies primarily on: → Temperature and wind pressure differences
4. Which gas is the primary air quality concern in confined swine facilities? → Ammonia
5. Of the following, which one is not a form of drilling? → Check row planting
6. A grassed waterway is used primarily to: → Safely convey runoff without causing erosion
7. What type of dairy cow was first bred and kept on the English Channel island of Guernsey? → Guernsey
8. It is known as _______ to analyze physical phenomena in variables and correlate them to produce a dimensionless group. → Dimensional analysis
9. The Reynolds number (Re) in a stirred bioreactor is primarily used to determine: → Flow regime (laminar vs. turbulent) within the vessel
10. What is the primary issue with wind power? → Requires large area of land
11. The concept of 'consumptive use' or evapotranspiration (ET) refers to: → Total water used by plants through transpiration plus soil evaporation
12. Which of the following claims about solar energy is true? → It is a renewable and non-conventional source of energy
13. In a unit operation, how is electric energy calculated? → Energy = power × time
14. What is the elastic bulk modulus? → The ratio of direct stress to volumetric strain
15. What is the recommended minimum ceiling height for a free-stall dairy barn in the US? → 12 feet
16. A material that is introduced on purpose to retain flavor and enhance flavor is known as . → Food additive
17. Specific fuel consumption (SFC) of a tractor engine is expressed as: → Pounds of fuel per horsepower-hour (lb/hp-hr) or grams per kW-hr
18. In a tractor, brake horsepower (BHP) is measured at the: → Engine crankshaft
19. Which of the following "selected dairy products" is produced the most in the United States? → Yogurt
20. The function of a tractor's live PTO is that it: → Continues to operate independently of the tractor's ground speed or clutch engagement
21. Which of the following answers is sufficient to compute the resulting change in diameter when a rod of length L and diameter D is subjected to a tensile load P? → Youngs modulus
22. An irrigation scheduling method that triggers irrigation when soil moisture reaches the management allowed depletion (MAD) level prevents: → Plant water stress and yield loss
23. The foundation of unit operation is . → law of conservation of mass and energy
24. Root zone heating in greenhouses improves crop growth by: → Maintaining optimal root-zone temperatures for nutrient uptake and root activity
25. What is a material's characteristic that allows it to be pulled into thin wires? → Ductility
26. Why does stress not qualify as a fundamental feature yet strain does? → Because it’s value is calculated in the laboratory
27. Ethylene gas plays what role in fruit post-harvest management? → Triggers ripening and senescence in climacteric fruits
28. The Penman-Monteith equation is used in irrigation planning to calculate: → Reference evapotranspiration (ETo)
29. Open ditch drainage differs from tile drainage in that open ditches: → Are surface channels that also intercept overland flow and remove standing water
30. What is the key factor that defines the compressibility effects in fluids and what is the ratio of inertial force to compressibility force? → Mach number