GATE ECE Diode circuits PYQs & Answers — Page 2

Questions 11–13 of 13. Imported answers require independent review unless marked reviewed.

In the circuit shown, the breakdown voltage and the maximum current of the Zener diode are 20 V and 60 mA, respectively. The values of

and

are 200

and 1 k

, respectively. What is the range of

that will maintain the Zener diode in the ‘on’ state?

Diagram for Electronics and Communication Engineering question 38

Your answerChoose one option.

22 V to 34 V

24 V to 36 V

18 V to 24 V

20 V to 28 V

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The output

of the diode circuit shown in the figure is connected to an averaging DC voltmeter. The reading on the DC voltmeter in Volts, neglecting the voltage drop across the diode, is _____.

Diagram for Electronics and Communication Engineering question 12

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In the figure, D1 is a real silicon

junction diode with a drop of 0.7 V under forward bias condition and D2 is a Zener diode with breakdown voltage of

V. The input

is a periodic square wave of period T, whose one period is shown in the figure.

Diagram for Electronics and Communication Engineering question 13

Assuming

, where

is the time constant of the circuit, the maximum and minimum values of the output waveform are respectively

Your answerChoose one option.

7.5 V and −20.5 V

6.1 V and −21.9 V

7.5 V and −21.2 V

6.1 V and −22.6 V

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GATE ECE Diode circuits PYQs

Question 38

Question 12

Question 13