railway DFCCIL Executive 2025 Mock Test Electrical and Electronics Measurements Cathode Ray Oscilloscope
A CRO displays a sine waveform which spans 3 cycles in 6 horizontal divisions. If the time base switch is set to 1 ms /div, what is the frequency of this signal which is being measured?
1
500 Hz
2
50 Hz
3
20 Hz
4
200 Hz