First; Answer by True or False the following:- (1) Mark each 1. The output frequency of a full-wave rectifier is twice the input frequency. 2. A bridge rectifier uses four diodes. 3. In a bridge rectifier, two diodes conduct during each half cycle of the input. 4. The purpose of the capacitor filter in a rectifier is to convert ac to dc. 5. The output voltage of a filtered rectifier always has some ripple voltage. Second; Find the correct answer to each multiple choice in the following questions, and each question equal (1) Mark:- 1. When the P-N junction is forward biased the sequence of events that take place are: (a) Diffusion, drift and recombination. (b) Injection, diffusion and recombination. (c. Diffusion, injection and drift. (d) None of the above. 2. The depletion region of P-N junction one that is depleted of (a) Atoms (b) Mobiles charges (c) Immobile charges (d) Velocity of the carriers 3. The depletion region within a P-N junction is reduced when the junction has: (a) Zero bias (b) Forward bias (c) Reverse bias (d) All of these 4. A silicon P-N junction in forward conduction has a voltage drop closer to (a) 0.1 V (b) 0.7 V (c) 1.7V (d) 2.1V 5. For a reverse biased P-N junction, the current through the junction increases abruptly at (a) Breakdown voltage (b) O V (c) 0.2 eV (d) 7.2 eV 6. In the practical diode model, (a) the barrier potential is taken into account (b) the forward dynamic resistance is taken into account (c) none of these (d) both (a) and (b) 7. The average value of a half-wave rectified voltage with a peak value of 200V is Page 1 of 5 (a) 63.7V (b) 127.2V (c) 141V (d) OV