EE115 Midterm | Complete Solution

Show work for full credit. Include MultiSIM screenshots where indicated.

1.    For the circuit below, solve for the following:

1.  R_T

1. I_T (pk), I_T (p-p), I_T (rms), I_T (avg)
2. Voltage drops across all individual resistors

a.    V_R1 (pk), V_R1 (p-p), V_R1 (rms), V_R1 (avg)

b.    V_R2 (pk), V_R2 (p-p), V_R2 (rms), V_R2 (avg)

c.    V_R3 (pk), V_R3 (p-p), V_R3(rms), V_R3 (avg)

d.    Period of the source VT

e.    Capture screen-shot of V_R1 (p-p), V_R2 (p-p), V_R2 (p-p). Use Tektronix Oscilloscope in MultiSIM.

2.    For a fixed frequency of f= 500Hz and the values of C below, determine X_C:

a.            C = 1.0uF X_c = ?

b.            C = 0.5uF X_c = ?

c.            C = 0.2uF X_c = ?

d.            C = 0.1uF X_c = ?

3.    Determine the following:

1. Xc_T for two capacitors in series with the values Xc₁ = 200ohms and Xc₂ = 800ohms
2. Xc_EQ for three capacitors in parallel with the values Xc₁ = 200ohms, Xc₂ = 800ohms and Xc₃ = 1000ohms

4.    For the circuits below, determine C_EQ and C_T respectively:

5.    For the circuit below, determine the following (express all answers in phasor form). No work equals no points. Include screenshot from MultiSIM for Single Frequency AC Analysis to confirm your calculations.

o    X_C

o    Z_T

o    I_T

o    V_R1

o    V_C1

6.    Given an iron core with 500 turns, a length of 0.50m and an area of 2x10^-4m², determine the inductance.

7.    A 20:1 transformer has N_P = 200, V_P = 220V and I_P = 4A. Determine N_S, V_S, and I_s.

8.    Four inductors of values 5mH, 9mH, 15mH, and 17mH are connected in series. Determine the total inductance.

9.    Four inductors of values 5mH, 9mH, 15mH, and 17mH are connected in parallel. Determine the total equivalent inductance.

10. Calculate the energy store in a 15mH inductor with a current of 5mA flowing through it.