PN Junction Diode Quiz

1. The ripple factor for a half wave rectifier is


A. 0.5
B. 0.75
C. 1.21
D. 2.0


Click for answer 

C. 1.21
2. The ripple factor for a full wave rectifier is

A. 0.482
B. 0.96
C. 1
D. 1.46


Click for answer 

A. 0.482
3. The electrons in an atom moves in

A. circular orbits
B. hyperbolic orbits
C. elliptical orbits
D. straight lines


Click for answer 

C. elliptical orbits
4. The bulf resistance of a diode is the resistance of

A. P material only
B. N material only
C. P and N materials
D. the resistance of the junction alone.


Click for answer 

C. P and N materials
5. The forbidden energy gap is highest for

A. Silicon
B. Geranium
C. Gallium Arsenide
D. Same in all above


Click for answer 

C. Gallium Arsenide
6. Any semi-conducter material has valance of electrons

A. 4
B. 5
C. 6
D. 7


Click for answer 

A. 4
7. Depletion region in a PN junction diode is due to

A. forward biasing
B. reverse biasing
C. either forward or reverse biasing
D. an area created by doping


Click for answer 

B. reverse biasing
8. Maximum rectification efficiency for a half wave rectifier is

A. 25%
B. 40.6%
C. 50%
D. 66.36%


Click for answer 

B. 40.6%
9. Maximum rectification efficiency for a full wave rectifier is

A. 40.6%
B. 66.4%
C. 81.2%
D. 100%


Click for answer 

C. 81.2%
10. The depletion layer of a PN junction diode hash

A. only free mobile holes
B. only free mobile electrons
C. both free mobile holes and electrons
D. neither free mobile holes nor electrons


Click for answer 

D. neither free mobile holes nor electrons