/u/Kooops's posts in /r/askscience

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Why are modern locomotives powered by diesel generators that power electric motors? How can this be more efficient/powerful than a direct mechanical connection or hydraulic?

1811 upvotes

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How do car A/C systems operate at a wide range of RPMs? Do compressors require more torque from the engine when the fan is low vs high?

85 upvotes

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How does Zeolite absorb and release energy?

2 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why are modern locomotives powered by diesel generators that power electric motors? How can this be more efficient/powerful than a direct mechanical connection or hydraulic?	1811
How do car A/C systems operate at a wide range of RPMs? Do compressors require more torque from the engine when the fan is low vs high?	85
How does Zeolite absorb and release energy?	2