Video Solutions for GATE 2013 EC : Electronic Devices - Two Mark Questions

1. In the circuit shown below, the knee current of ideal zener diode is 10 mA. To maintain 5 volts across R_L in ohms and the minimum power rating of the zener diode in mW, respectively are.....

A.  125  and  125

B.  125 and  250

C.  250  and 125

D. 250  and  250


Ans :  B

2. In the circuit shown below, the Silicon NPN transistor Q has a very high value of β. The required value of  R₂  in KΩ to produce I_C = 1 mA is ______

A. 20

B. 30

C. 40

D. 50 

Ans :  C