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GATE Electronics and Communications (EC) 2018 Solved Paper

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Question : 12

Total: 65

In the circuit shown below, the op-amp is ideal and the Zener voltage of the diode is 2.5 volts. At the input, unit step voltage is applied, i.e. V_IN (t) = u(t) Volts. Also, at t = 0, the voltage across each of the capacitors is zero.

The time 't', in milliseconds, at which the output voltage V_OUT crosses −10 V is:

2.5
5
7.5
10

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