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GATE 2019: Analog Electronics Quiz 3 (App update required to attempt this test)
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Question 1
Calculate the value of resistor RE using feedback concepts so that final voltage gain (=AFB) is equal to 100. Common emitter (CE) amplifier shown in fig. has voltage gain of 200 when RE = 0. Stability is brought through negative feedback by adding resistor RE
Question 2
Calculate the voltage gains without feedback, A, and with feedback for the series-shunt feedback amplifier shown in figure.
Question 3
In the circuit shown , function of diode D1 is
Question 4
Two voltage of +0.6V and -1.4V are applied to the two input resistors of a summing amplifier. The respective input resistors are 400KΩ and 100KΩ and feedback resistor is 200KΩ. Determine the out put voltage.
Question 5
Find input resistance RIN
Question 6
The circuit shown in the figure uses matched transistors with a thermal voltage VT = 25 mV. The base currents of the transistors are negligible. The value of the resistance R in kΩ that is required to provide 1μ-A, bias current for the differential amplifier block shown is ______.
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Jun 25ESE & GATE EE