Electronics - Alternating Current and Voltage - Discussion

Discussion Forum : Alternating Current and Voltage - General Questions (Q.No. 5)

Alternating Current and Voltage

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 2 of 3.

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.

Vinod semwal said: 1 decade ago

Vpick = pai* Vavrag/2.
Vpick = 3.14*12/2.
= 18.84.

Vrms = Vpick/1.414.
= 18.84/1.414.
= 13.33 V.

Stp said: 1 decade ago

Form factor Kf = (rms value/half cycle average value).

Kf for sine wave 1.11.
rms value = 1.11X12= 13.33.

Hari said: 3 years ago

Half wave
Vavg=vm/π
Vm=vavg*π
Vm=12*π
= 37.69.

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

(2)

ABIAS UG said: 4 years ago

Vav = 0.636Vpk.
Vpk = Vav/0.636 = 12/0.636.
=.18.867925,
Vrms = Vpk/√2.
= .13.34.

(1)

Vid said: 1 decade ago

Why we are not directly taken formula for half wave rectifier.

Form factor= (rms/avg).

KIRAN V said: 5 years ago

Vrms = Vpeak x .707.
Vrms = 1.11 x Vavg.
Vpeak = 1.414 x Vrms.
Vavg = .637 x Vpeak.

SAs said: 10 years ago

For half cycle.

Effective voltage or RMS = 1.11*V average.

= 1.11*12 = 13.32 v.

Ram said: 1 decade ago

Imax=Irms/1.414
Imax=1.57*Iav
Imax=1.57*12=18.84
Irms=18.84/1.414
Irms=13.33V

Sunday said: 1 decade ago

Can same formula work for rms and half cycle.

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