Question

An ac generator produced an output voltage$E = 170\sin 377tvolts$, where t is in seconds. The frequency of ac voltage is

• A. 50 Hz
• B. 110 Hz
• C. 60 Hz
• D. 230 Hz

Answer 1

Answer: (C)

60 Hz

Answer 2

$2\pi\nu = 377 \Rightarrow \nu = 60.03\mspace{6mu} Hz$