Electrical Engineering - Circuit Theorems and Conversions - Discussion

Discussion Forum : Circuit Theorems and Conversions - General Questions (Q.No. 1)
1.
Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given below.

4.16 V, 120
41.6 V, 120
4.16 V, 70
41.67 V, 70
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
43 comments Page 3 of 5.

Padam limbu said:   9 years ago
41.66 v and 70 Ohm is correct.

EEE said:   9 years ago
@ALL.

For the kind information, R3 is opened while calculating Rth. So, actual Rth is 100+68. This is what the Venin's theorem states.

Mvs said:   9 years ago
Yes, correct @Eee.

When calculating the Venin voltage is equal to open circuit voltage.

VIJAYA said:   4 weeks ago
How (100 + 68)/(100 + 68 + 120) = 70?

Is this correct, please explain how did 70 come.

BASAVARAJ K T said:   1 decade ago
vth=(VS*R3)/(R1+R2+R3)
Rth=R1R2/(R1+R2)

Arasu said:   2 decades ago
I want some simple technic for this sum.

Apuelectrical said:   2 decades ago
rth = r3||(r1 + r2)

vth = vs.r3/r1+r2

Swetapadma said:   1 decade ago
rth=120//(100+68)
vth=

vth = vs.r3/r1+r2
=ioo*120/(100+120+68)

Pabitra Roy said:   1 decade ago
Vth=v*120/288,

Rth=168*120/(120+168)

Soma said:   1 decade ago
Vth = R3*(Vs/(R1+R2+R3))= 120*(100/(68+100+120)) = 41.67 V

Rth = R3//(R1+R2) = (120*160) / (120 + 168)= 70 ohm


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