Canada · Provincial and territorial regulators (syllabus by Engineers Canada) · licensing
Written confirmatory exams for graduates of non-CEAB programmes, assigned case by case.
CEAB-accredited graduates do not sit these. Exam codes suggest a 2022 edition (inference).
Official source: https://engineerscanada.ca/regulatory-excellence/examination-syllabi/agricultural-biosystems-bioresource-food-engineering-syllabus
Original questions written to this exam's published syllabus and pattern. Not past papers.
1. Using Stokes' law at 20 °C (water viscosity 1.002 × 10⁻³ Pa s, particle minus water density 1650 kg/m³, g = 9.81 m/s²), about how long does a 2 µm clay particle take to settle 10 cm?
D. About 7.7 hours
v = g d² Δρ/(18η) = 9.81 × (2 × 10⁻⁶)² × 1650/(18 × 1.002 × 10⁻³) = 3.59 × 10⁻⁶ m/s. Time = 0.10/3.59 × 10⁻⁶ = 27,857 s = 7.7 h. 31.0 hours comes from putting the 1 µm radius into a formula written for diameter; 1.9 hours from using 9η (the radius form of the law) with the diameter; 4.8 hours from using the particle density 2650 kg/m³ instead of the density difference.
Soil Science for Engineers · Soil texture and structure
2. Which crop uses the C4 photosynthetic pathway?
A. Sugarcane
Sugarcane, like maize, sorghum and pearl millet, fixes CO₂ first into a four-carbon acid and concentrates it around Rubisco, suppressing photorespiration. Wheat, sunflower and rice are C3 crops.
Crop Production & Protection for Engineers · Crop classification and seasons
3. A fruit purée becomes easier to pump the faster it is sheared, and it has no yield stress. How is this fluid classified?
B. Pseudoplastic (shear-thinning)
Apparent viscosity that falls as shear rate rises is pseudoplastic (shear-thinning) behaviour. A dilatant fluid thickens with shear; a Bingham plastic needs a yield stress before it flows; a Newtonian fluid has constant viscosity.
Fluid Mechanics & Open Channel Hydraulics · Properties of fluids
4. A soil has a void ratio of 0.80. What is its porosity?
C. 0.444
n = e/(1 + e) = 0.80/1.80 = 0.444. 0.556 is 1/(1 + e), the volume fraction of solids, not voids; 1.250 is 1/e; 4.000 comes from wrongly using e/(1 − e). Porosity can never exceed 1.
Soil Mechanics · Phase relations
5. A vacuum gauge on the condenser of a small steam plant reads 85 kPa of vacuum; the local atmospheric pressure is 100 kPa. The absolute pressure in the condenser is
C. 15 kPa
For a vacuum reading, P_abs = P_atm − P_vac = 100 − 85 = 15 kPa. 185 kPa wrongly adds the vacuum reading, 85 kPa treats the vacuum reading as absolute, and 16.3 kPa uses 101.325 kPa instead of the stated 100 kPa.
Engineering Thermodynamics · Systems, properties and the zeroth law
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