27-11-2012, 05:57 PM
FIRST SESSIONAL EXAMINATION 2012 – 13
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Note: (i) All Questions carry equal marks
Q.1 Attempt any two questions, question carry equal marks
a) Explain P-N junction with V-I characteristics?
b) Define average current, PIV, diode resistance?
c) Explain forward bias & reverse bias of the diode?
Q.2. Attempt any two questions, question carry equal marks
a) What is avalanche multiplication & zener break down phenomenon?
b) Explain ZENER diode with V-I characteristics?
c) Explain ZENER diode as a voltage regulator?
Q.3. Attempt any two questions, question carry equal marks
a) Explain bridge type full wave rectifier?
b) Calculate ripple factor & load regulation for half wave rectifier?
c) Differentiate half wave rectifier & full wave rectifier at least write five points?