Discussion
A flywheel is best suited to duties that need
Answer: C
Correct answer: high power for a short time
A flywheel can absorb or deliver very large power almost instantly and can be cycled millions of times without degradation, which makes it excellent for frequency regulation, for ride-through of momentary interruptions, and for repetitive duties. What it cannot do is hold energy: bearing and windage losses drain it in hours, so it is a power device rather than an energy one.
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