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?
13.33 V
8.48 V
18.84 V
7.64 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
24 comments Page 3 of 3.

Ancy said:   4 years ago
Thanks @Kiran V.

RENJITH K N said:   2 years ago
Average voltage;
Vavg=Vmax/π=12v ----> 1.

We found rms voltage = Vrms=Vmax/2 ------> 2.

From equation 1 Vmax=Vavg x π
= 12 x π
= 12 x 3.14,
= 37.68.

Applying equation 2 Vrms=Vmax/2.
= 37.68/2 .
=18.84.

ABIAS UG said:   2 years ago
Vav = 0.636Vpk.
Vpk = Vav/0.636 = 12/0.636.
=.18.867925,
Vrms = Vpk/√2.
= .13.34.
(1)

Hari said:   2 years ago
Half wave
Vavg=vm/π
Vm=vavg*π
Vm=12*π
= 37.69.

Vrm=vm/2.
= 37.69/2,
=> 18.84.
(2)


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