Usa "revolutions per minute" in una frase

1. The current runs high, you tune out the hum of the engine, the revolutions per minute of the electric motor indistinguishable from the air

2. The speed was 78 revolutions per minute or thereabouts

3. Just then it scented her blood, and as she watched, its razor sharp blades began to whistle through the air, rotating about its circumference thirty six hundred revolutions per minute—fast enough to butcher any living thing in less than a split second

4. To her immense relief, the turbo-shaft engine of the helicopter started whining at once, soon gaining in turbine revolutions per minute as the engine powered up

5. 5 meters, and can do up to 120 revolutions per minute