Answer :


Voltage gain of X = 10

Voltage gain of Y = 20

Voltage gain of Z = 30

Input signal Vi = 1 mV

Since the three amplifiers are connected in series, the net gain would be

Then the output signal voltage will be

(i) Now, if the supply voltage is 10 V the output voltage will be 6V, since the output can never be greater than 6 V.

(ii) If the supply voltage is 5V, saturation occurs and the output voltage will not exceed 5V, therefore peak output voltage = 5V.

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