Q. At high frequencies when the sampling interval is too long in a frequency counter
✅ Correct Answer: (D)
the counter overflows
Explanation: let the sampling time be 1 sec. this means the counter will count the number of pulses from the unknown signal for 1sec duration and would display it after 1 sec. thus if the signal is of 800 hz, at the end of 1 sec, counter would have counted up to 800. thus, in case of high frequencies and high sampling time, counter might count beyond its limit and overflows.