How many voltage pulses would occur in each of the following for a full wave and half wave rectified machine?

Question

20 msec
1/40 sec
500 msec

Answer 1

60 Hz:
20 msec ==> 1.2 HW, 2.4 FW
1/40 sec ==> 1.5 HW, 3 FW
500 msec ==> 30 HW, 60 FW

50 Hz:
20 msec ==> 1 HW, 2 FW
1/40 sec ==> 1.25 HW, 2.5 FW
500 msec ==> 25 HW, 50 FW

400 Hz:
20 msec ==> 8 HW, 16 FW
1/40 sec ==> 10 HW, 20 FW
500 msec ==> 200 HW, 400 FW