2021 Solution 04
2021 Solution 04
Isaac P Abraham
2020 Dec 25
2020 Dec 25
True or False. The efficiency of an Thévenin circuit composed of , and where is the load resistor, is better when >> .
V
TH
R
TH
R
L
R
L
R
L
R
TH
In[]:=
PWROUT=;
2
VL
RL
In[]:=
PWRIN=;
2
V
RL+RTH
In[]:=
VL=V;
RL
RL+RTH
In[]:=
EFFICIENCY=
PWROUT
PWRIN
Out[]=
RL
RL+RTH
We can see that as the load resistance increases the efficiency of power transfer increases.
In[]:=
Limit[EFFICIENCY,RLInfinity]
Out[]=
1
True.
Ref: Valerii Ilyushchenko (translated by V.N. Lange), "Science for everyone", Mir Publishers, Moscow, USSR.