Firefighter Mechanical Aptitude · Question
When water flows from a wide pipe into a narrow pipe, the velocity:
Continuity: A1 v1 = A2 v2. Smaller area → higher velocity. Bernoulli: pressure drops as velocity rises.
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Question: When water flows from a wide pipe into a narrow pipe, the velocity:
Answer options:
- Decreases ✅ Increases
- Stays the same
- Drops to zero
Correct answer: Increases
Explanation: Continuity: A1 v1 = A2 v2. Smaller area → higher velocity. Bernoulli: pressure drops as velocity rises.
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- Scenario 1: Which simple machine uses a fulcrum to multiply force or change the direction of force?
- Scenario 2: If a hydraulic jack has a small piston with an area of 5 cm² and a large piston with an area of 50
- Scenario 3: Which of the following would require the MOST force to move?
- Scenario 4: A rope is tied to a heavy box. Instead of pulling the box directly, a firefighter wraps the rope a
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