ECE 210 Quiz 7

Question 1.1. (TCO 7) For the transformer shown in the figure, V_P = 120 V_RMS, n, turns ratio = 1:10; R_L = 500 . The secondary voltage is

(Points : 4)

       1200 V_RMS
       12 V_RMS
       12 k V_RMS
       1.2 V_RMS

Question 2.2. (TCO 7) For the transformer shown in the figure, V_P = 120 V_RMS, n, turns ratio = 4:1; R_L = 300 . The RMS value of the secondary current is

(Points : 4)

       10 mA
       100 mA
       1 mA
       1 A

Question 3.3. (TCO 7) For the Zener circuit shown:
Zener Voltage V_Z = 5 V
And V_S = 8 V
Zener current = 20 mA
R2 = 1000
Calculate the value of R1 in

(Points : 4)

       120
       1 k
       10
       200

Question 4.4. (TCO 7) An AC source of 200 Hz is being converted to Full Wave Rectified wave form. What is the frequency of the output wave form? (Points : 4)

       400 Hz
       800Hz
       200 Hz
       100 Hz

Question 5.5. (TCO 7) In a regulated DC power supply design the load resistor is connected ____________ (Points : 4)

       in series with the Zener diode.
       in parallel with the Zener diode.
       in series with the smoothing capacitor.
       in parallel to the secondary of the transformer.

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