Electronics - Alternating Current and Voltage - Discussion
Discussion Forum : Alternating Current and Voltage - General Questions (Q.No. 5)
5.
A half-cycle average voltage of 12 V is equal to what rms voltage?
Discussion:
24 comments Page 3 of 3.
Kaneez fatima said:
1 decade ago
You all are applying formula for full cycle, but in question we asked to find rms for half cycle. If we apply formula for the half cycle answer may be wrong.
Abhi said:
1 decade ago
Avg.value = 0.636*Max.value.
Max.value = 12/0.636 = 18.86.
but,
RMS value = Max.value/1.414.
RMS value = 18.86/1.414=13.34.
So, the option is [A].
Max.value = 12/0.636 = 18.86.
but,
RMS value = Max.value/1.414.
RMS value = 18.86/1.414=13.34.
So, the option is [A].
Vid said:
1 decade ago
Why we are not directly taken formula for half wave rectifier.
Form factor= (rms/avg).
Form factor= (rms/avg).
Karuppasamy kpk said:
1 decade ago
RMS value = V(peak value)*.707
V(average value)= Vpk*.637
Therefore, RMS valu =Vav*(.707/.637)
Vrms = 12*1.11 = 13.31= 13.33.
V(average value)= Vpk*.637
Therefore, RMS valu =Vav*(.707/.637)
Vrms = 12*1.11 = 13.31= 13.33.
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