Mathematics · Fluid Machinery Calculations
The water in a jet-propelled boat is drawn amid-ship and discharged at the back with an absolute velocity of 15 m/s. The boat speed is 30 km/hr. The cross-sectional area of the jet at the back is 0.03 m2. What is the efficiency of the jet propulsio n?
- 139.4
- 245.9%
- 351.3%
- 468.5%✓
Correct answer
68.5%
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