A disk drive has a rotational speed of 100 revolutions per second. What is the average rotational latency?
A.
15 ms
B.
10 ms
C.
3 ms
D.
5 ms
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Other tests, Actual tests, have this answer at 3 ms. Which one is it?
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The answer is C, 3 ms.
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the correct answer is 5 ms because the Rotational dalay in sec. is:
0.5/(RPM/60), but we haave the rotational speed en seconds (RPS)and then the result is 0.5/(100)= 0.005 isn´t necesary to convert minutes to seconds.
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Then there are other questions on this test that are wrong that state it’s 3 ms.
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Correct answer is D 5ms (0.5/revolutions per second)
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