MCQOPTIONS
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| 1. |
An aircraft with a turbojet engine flies at a velocity of 100 m/s. If the jet exhaust velocity is 300 m/s, the propulsive efficiency of the engine, assuming a negligible fuel-air ratio, is |
| A. | 0.33 |
| B. | 0.50 |
| C. | .67 |
| D. | .8 |
| Answer» C. .67 | |