Engineering Board Exam Reviewer · Alternating Current and Voltage · medium
A voltage is given by v=311 (377t) V. What is its frequency?
- 0.377 kHz
- 0.06 kHz
- 0.12 kHz
- 2.37 kHz
Answer
B. 0.06 kHz
Solution
Comparing with v=Vp ( t) gives =377 rad/s. f= /2π=377/2π=60 Hz.
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