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GATE : Multiple choice questions for Diodes

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1)Tunnel diode and Photo diode are operated in _____ and ____ bias  respectively

a. Reverse and Forward

b. Forward and Reverse

c. Reverse and Reverse

d. Forward and Forward

 

2)  Avalanche breakdown in a diode occurs when

a. Potential barrier is reduced to zero

b. Forward current exceeds certain value

c. Reverse bias exceeds a certain value

d. None of these

 

3) In a Zener diode

a. Only the P-region is heavily doped

b. Only the N-region is heavily doped

c. Both P and N region are heavily doped

d. Both P and N region are lightly doped

 

4)Which of these diodes is also called hot carrier diode.

a. PIN diode

b. LED

c. Photo diode

d. Schottkey diode

5) What is the voltage across the load resistor R2 in the below diagram

zd

a) 6V            b) 5V        c) 0v         d) 4v

 

 

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1 Comment

  1. Ans => 1. b ; 2.c ; 3.c ; 4.d ; 5.b

    Like

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