railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Cathode Ray Oscilloscope
In case of a frequency measurement using lissajous pattern following figure is observed. If the frequency of the signal applied to horizontal deflection plates is 30 Hz, find the frequency of the signal applied to vertical deflection plates.
1
60 Hz
2
10 Hz
3
90 Hz
4
30 H