GATE EE 2014 Set 1 | Feedback Amplifiers and Oscillator Circuits Question 2 | Analog Electronics

GATE EE 2014 Set 1

MCQ (Single Correct Answer)

-0.3

In the Wien Bridge oscillator circuit shown in figure, the bridge is balanced when GATE EE 2014 Set 1 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 8 English

GATE EE 2014 Set 1 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 8 English

$${{{R_3}} \over {{R_4}}} = {{{R_1}} \over {{R_2}}},\,\,\,\omega = {1 \over {\sqrt {{R_1}{C_1}{R_2}{C_2}} }}$$

$${{{R_2}} \over {{R_1}}} = {{{C_2}} \over {{C_1}}},\,\,\,\omega = {1 \over {{R_1}{C_1}{R_2}{C_2}}}$$

$${{{R_3}} \over {{R_4}}} = {{{R_1}} \over {{R_2}}} + {{{C_2}} \over {{C_1}}},\,\,\,\omega = {1 \over {\sqrt {{R_1}{C_1}{R_2}{C_2}} }}$$

$${{{R_3}} \over {{R_4}}} + {{{R_1}} \over {{R_2}}} = {{{C_2}} \over {{C_1}}},\,\,\,\omega = {1 \over {{R_1}{C_1}{R_2}{C_2}}}$$

GATE EE 2013

MCQ (Single Correct Answer)

-0.3

In the feedback network shown below, if the feedback factor $$k$$ is increased, then the GATE EE 2013 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 9 English

GATE EE 2013 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 9 English

input impedance increases and output impedance decreases.

input impedance increases and output impedance also increases.

input impedance decreases and output impedance also decreases.

input impedance decreases and output impedance increases.

GATE EE 2010

MCQ (Single Correct Answer)

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As shown in the figure, a negative feedback system has an amplifier of gain $$100$$ with $$ \pm 10\% $$ tolerance in the forward path, and an attenuator of value $$9/100$$ in the feedback path. The overall system gain is approximately. GATE EE 2010 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 10 English

GATE EE 2010 Analog Electronics - Feedback Amplifiers and Oscillator Circuits Question 10 English

$$10 \pm 1\% $$

$$10 \pm 2\% $$

$$10 \pm 5\% $$

$$10 \pm 10\% $$

GATE EE 2001

MCQ (Single Correct Answer)

-0.3

An op-amp has an open-loop gain of $${10^5}$$ and an open-loop upper cutoff frequency of $$10$$ $$Hz.$$ If this op-amp is connected as an amplifier with a closed-loop gain of $$100,$$ then the new upper cutoff frequency is

$$10$$ $$Hz$$

$$100$$ $$Hz$$

$$10$$ $$kHz$$

$$100$$ $$kHz$$