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GATE Electronics and Communications (EC) 2018 Solved Paper
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© examsnet.com
Question : 36
Total: 65
The circuit shown in the figure is used to provide regulated voltage (5 V) across the 1 kΩ resistor. Assume that the Zener diode has a constant reverse breakdown voltage for a current range, starting from a minimum required Zener current, I
Zmin
= 2 mA to its maximum allowable current. The input voltage V
I
may vary by 5% from its nominal value of 6 V. The resistance of the diode in the breakdown region is negligible.
The value of R and the minimum required power dissipation rating of the diode, respectively, are
186 Ω and 10 mW
100 Ω and 40 mW
100 Ω and 10 mW
186 Ω and 40 mW
Validate
Solution:
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