GATE ECE 2004 | Feedback Amplifier Question 8 | Analog Circuits

GATE ECE 2004

MCQ (Single Correct Answer)

-0.6

Voltage series feedback (also called series-shunt feedback) results in

increase in both input and output impedances.

decrease in both input and output impedances.

increase in both input impedances and decrease in output impedances.

decrease in input impedances and increase in output impedance.

GATE ECE 2003

MCQ (Single Correct Answer)

-0.6

An amplifier without feedback has a voltage gain of 50, input Resistance of 1 k$$\Omega $$ and output Resistance of 2.5 k$$\Omega $$ . The input Resistance of the current-shunt negative feedback factor of 0.2 is

1/1 k$$\Omega $$

1/5 k$$\Omega $$

5 k$$\Omega $$

11 k$$\Omega $$

GATE ECE 2002

MCQ (Single Correct Answer)

-0.6

In a negative feedback amplifier using voltage - Series (i.e., voltage - sampling, series mixing) feedback

$${R_i}$$ decreases and $${R_0}$$ decreases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)

$${R_i}$$ decreases and $${R_0}$$ increases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)

$${R_i}$$ increases and $${R_0}$$ decreases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)

$${R_i}$$ increases and $${R_0}$$ increases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)

GATE ECE 2000

MCQ (Single Correct Answer)

-0.6

The most commonly used Amplifier in sample and hold circuit is

A unity gain inverting Amplifier

A unity gain non-inverting inverting Amplifier

An inverting Amplifier with a gain of 10.

An inverting Amplifier with a gain of 100.

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