Deck 4: Data Analysis Equivalent Electrical Circuits

Question 1

For the following circuit, determine the impedance at a frequency of 0.1 Hz. Z_Re = __________ $\Omega$ and Z_Im = ____________ $\Omega$

Answer 1

6.81 (from 6.7 to 6.9) , 1.38 (from 1.3 to 1.5)

Question 2

For the following circuit, determine the impedance at a frequency of 1 Hz. Z_Re = __________ $\Omega$ and Z_Im = ____________ $\Omega$

Answer 2

429 (from 420 to 440), 113 (from 103 to 123)

Question 3

Charge transfer resistance is the value of faradaic impedance at _____

A) infinite frequency
B) zero frequency
C) open circuit potential
D) large dc bias

Answer 3

A

Question 4

An impedance spectrum of an electrochemical system can be modeled using the following circuit. Then , R_t = _________ $\Omega$ and R_p = ________ $\Omega$

Question 5

An impedance spectrum of an electrochemical system can be modeled using the following circuit. Then , R_t = _________ $\Omega$ and R_p = ________ $\Omega$

Question 6

An impedance spectrum of an electrochemical system can be modeled using the following circuit. Then , R_t = _________ $\Omega$ and R_p = ________ $\Omega$

Question 7

An impedance spectrum of a system is given below. The polarization resistance is _____ $\Omega$

Question 8

From Bode plot, estimate charge transfer resistance _______ $\Omega$ and polarization resistance ___________ $\Omega$

Question 9

An impedance spectrum of a system is given below. The charge transfer resistance is _____ $\Omega$

Question 10

An impedance spectrum of a system is given below. The charge transfer resistance is _____ $\Omega$ and polarization resistance is _____ $\Omega$

Question 11

An impedance spectrum of a complex reaction is acquired at open circuit potential. The real part of the impedance can exhibit negative differential resistance..

Question 12

The type of circuit given below is known as

A) Maxwell circuit
B) Ladder circuit
C) Voigt circuit
D) Randel's circuit

Question 13

The type of circuit given below is known as

A) Maxwell circuit
B) Ladder circuit
C) Voigt circuit
D) Randel's circuit

Question 14

When multiple circuits are evaluated to model a data, the best fit model should be selected based on

A) least number of parameters
B) least residual sum squared
C) least residual sum
D) Akaike information criterion

Question 15

An impedance spectrum containing 80 data points was fitted with different circuit models. The number of adjustable parameters in each model and the residual sum squared errors are listed below. $$\begin{array} { | l | l | l | } \hline \text { Model } & \begin{array} { l } \text { Number of } \\\text { Parameters }\end{array} & \text { RSS } \\\hline \text { Model-1 } & 3 & 200 \\\hline \text { Model-2 } & 5 & 150 \\\hline \text { Model-3 } & 8 & 110 \\\hline \text { Model-4 } & 12 & 105 \\\hline\end{array}$$
The best-suited model should be chosen based on the least value of

A) RSS
B) Akaike Information criterion (AIC)
C) corrected AIC
D) none of the above

Question 16

The following two circuits are equivalent. The values of R₁ and R₂ are (i) R₁ = __________ $\Omega$ (ii) R₂ = ________________ $\Omega$

Question 17

The following two circuits are equivalent. The values of R₁ and R₂ are (i) R₁ = __________ $\Omega$ (ii) R₂ = ________________ $\Omega$

Question 18

The following circuit can model an impedance spectrum perfectly.

Which other circuits can model the data equally well?
(Circuit-1)

(Circuit-2)

A) only Circuit-1
B) only Circuit-2
C) both Circuit-1 and Circuit-2
D) neither Circuit-2 nor Circuit-2

Question 19

The following circuit can model an impedance spectrum perfectly.
Which other circuits can model the data equally well?
(Circuit-1)
(Circuit-2)

A) only Circuit-1
B) only Circuit-2
C) both Circuit-1 and Circuit-2
D) neither Circuit-2 nor Circuit-2

Question 20

The following impedance spectrum is to be modeled.

Among the following circuit choices, which one can be used to model the data?

A)
B)
C)
D) none of the above

Question 21

The following impedance spectrum is to be modeled.

Among the following circuit choices, which one can be used to model the data?

A)
B)
C)
D) none of the above