Engineering Board Exam Reviewer · Alternating Current and Voltage · easy
A sinusoidal voltage has a peak value of 311 V. What is its rms value?
- 311 V
- 198 V
- 440 V
- 220 V
Answer
D. 220 V
Solution
Vrms=Vp/ 2=0.707(311)=220 V.
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