Engineering Board Exam Reviewer · Alternating Current and Voltage · medium
How long does a 60 Hz sine wave take to go from zero to 45° of its cycle?
- 4.17 ms
- 2.78 ms
- 1.04 ms
- 2.08 ms
Answer
D. 2.08 ms
Solution
T=1/60=16.67 ms. The time for 45° is t=45°/360°T=1/8(16.67 ms)=2.08 ms.
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