Sample Quizzes

 

 

Quiz #1: I. w =810 J; II. Cost = 10.35 cents; III. All four

Quiz #2:

I.                               Superposition holds:

i1 v1 = di1/dt and i2 v2 = di2/dt

Then, i = i1 + i1 v = d(i1+i2)/dt = di1/dt + di2/dt = v1 + v2

Homogeneity holds:

i1 v1 = di1/dt, then i = ki1 v = d(ki)/dt = k di/dt = kv1

II.                R = 0.1365 mOhm

 

Quiz #3: I. Nonlinear, -0.1 mW, active element. II. V = 0 V, I = 3 A.

Quiz #4: I. 20 volt; II. 12 Ohm; III. 2 A

 

Quiz #5:

Problem I:

(1/2)v1 + (-1/2)v2 + (0)v3 = -1

(-1/2)v1 + (3/2)v2 + (-1)v3 = 2

(0)v1 + (-1)v2 + (2)v3 = 1

Problem II:

(2)v1 + (-1)v2 + (0)v3 = 1

(-1)v1 + (2)v2 + (-1)v3 = -1

(0)v1 + (-1)v2 + (2)v3 = -1

 

Quiz #6: Solution

Quiz #7: Solution

 

Quiz #8: I. 8 V; II. 2 V

Quiz #9: I. i(t) = - 0.15e-25t mA; wc(0) = 9 mJ. II. vc(0+)=4 V; iL(infinity)=0.

 

Quiz #10: 1. vc(0+) = 72/7 Volt; 2. vc(t)/dt + 9vc(t) = 72e-9t Volt, t > 0; 3. x(t) = (5t + 2)e-9t . Complete solution (jpg).

Play solution (.wmv format; Best viewed in full screen mode) as a movie (requires Windows Media Player). (Downlod Windows Media Player here if your PC does not have it intalled).

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Quiz #11: 1. i1(0+) = 6A, di1(0+)/dt = -3A/s; 2. d2i1/dt2 + (7/2)di1/dt + (3/2)i1 = 9/2; 3. i1(infinity) = 3A, i2(infinity) = 0A. Complete Solution (jpg): Part I , Part II.

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Quiz #12: Part I, Part II, Part III, Part IV. (Mathcad Laplace-Based Solution)