ECET210 WEEK 7 HOMEWORK PART 2

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

(Points : 4)

       1200 VRMS        12 VRMS        12 k VRMS        1.2 VRMS

Question 2.2. (TCO 7) For the transformer shown in the figure, VP = 120 VRMS, n, turns ratio = 4:1; RL = 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 VZ = 5 V And VS = 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.