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. The Reynolds number in a food processing pipeline is 1,800. What flow regime is present? → Laminar flow
3. Which type of pump is most appropriate for moving a shear-sensitive food liquid such as whole berry yogurt without damaging the fruit pieces? → Positive displacement rotary lobe pump
4. A simply supported steel beam of length 6 m carries a central point load of 12 kN. What is the maximum bending moment at midspan? → 18 kN·m
5. 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
6. Natural ventilation in animal housing relies primarily on: → Temperature and wind pressure differences
7. In cheese manufacturing, what is the role of calcium chloride (CaCl₂) addition to pasteurized milk? → It restores calcium ions lost during pasteurization to improve rennet coagulation
8. Which gas is the primary air quality concern in confined swine facilities? → Ammonia
9. The pasteurization of egg products at 60°C for 3.5 minutes is designed primarily to destroy: → Salmonella species
10. Of the following, which one is not a form of drilling? → Check row planting
11. A grassed waterway is used primarily to: → Safely convey runoff without causing erosion
12. What type of dairy cow was first bred and kept on the English Channel island of Guernsey? → Guernsey
13. It is known as _______ to analyze physical phenomena in variables and correlate them to produce a dimensionless group. → Dimensional analysis
14. In a flat-plate solar collector used for crop drying, what material is typically used as the absorber plate to maximize heat absorption? → Black-painted metal sheet
15. The Reynolds number (Re) in a stirred bioreactor is primarily used to determine: → Flow regime (laminar vs. turbulent) within the vessel
16. A sprinkler pipe made of PVC has an inner diameter of 50 mm, wall thickness of 4 mm, and internal water pressure of 0.8 MPa. What is the hoop stress? → 5 MPa
17. Which packaging atmosphere modification is used to slow ripening and extend shelf life of fresh-cut produce? → Reduced O2 and elevated CO2
18. What is the primary issue with wind power? → Requires large area of land
19. The concept of 'consumptive use' or evapotranspiration (ET) refers to: → Total water used by plants through transpiration plus soil evaporation
20. Which of the following claims about solar energy is true? → It is a renewable and non-conventional source of energy
21. In a unit operation, how is electric energy calculated? → Energy = power × time
22. Which tillage implement is designed to break up hardpan soil layers below normal plow depth? → Subsoiler
23. What is the elastic bulk modulus? → The ratio of direct stress to volumetric strain
24. What is the recommended minimum ceiling height for a free-stall dairy barn in the US? → 12 feet
25. A material that is introduced on purpose to retain flavor and enhance flavor is known as . → Food additive
26. 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
27. In a tractor, brake horsepower (BHP) is measured at the: → Engine crankshaft
28. What is the primary purpose of blanching vegetables before freezing? → To inactivate enzymes that cause quality deterioration
29. Which of the following "selected dairy products" is produced the most in the United States? → Yogurt
30. The function of a tractor's live PTO is that it: → Continues to operate independently of the tractor's ground speed or clutch engagement