Are You Smarter than an Undergraduate? May 2026 - PEimpact - Recognizing the impact of PEs

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Are You Smarter than an Undergraduate? May 2026lemleonardia99p2026-02-09T10:41:08-06:00

Are you smarter than an undergraduate

PDHengineer's monthly quiz for engineers

Some Bridges Should Never Be Crossed. Put your engineering judgment to the test with the world’s strangest spans.

Question 1: Which component resists changes in current flow?
- Capacitor
- Resistor
- Inductor
- Diode

Question 2: Terzaghi’s principle states that ___________.
- Water carries total stress
- Effective stress equals total stress
- Effective stress = Total stress – Pore water pressure
- Pore pressure is negligible

Question 3: The expansion valve in a refrigeration cycle ___________.
- Increases refrigerant pressure
- Reduces refrigerant pressure and temperature
- Compresses refrigerant vapor
- Rejects heat to ambient air

Question 4: The Brinell hardness test uses a(n) _________.
- Diamond pyramid
- Hardened steel or tungsten carbide ball
- Indenter with square base
- Impact hammer

Question 5: Positive displacement pumps deliver _______________.
- Variable flow depending on head
- Nearly constant flow regardless of head
- Maximum efficiency at shutoff
- Flow only in turbulent regimes

Question 6: The bending stress in a beam is given by ______________.
- σ = M × A / I
- σ = M × y / I
- σ = V × Q / I
- σ = P / A

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