Analog Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 126 - 131 of 249

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Question 126

Analog Circuits
Simple Op-Amp Circuits

Appeared in Year: 1999

Question

MCQ▾

Negative feedback in an amplifier

Choices

Choice (4)Response

a.

Increase noise

b.

Reduces bandwidth

c.

Reduces gain

d.

Increases frequency and phase distortions

Question 127

Analog Circuits
Multi-Stage, Differential, Feedback, Power and Operational

Appeared in Year: 1999

Question

MCQ▾

Crossover distortion behaviour is characteristic of

Choices

Choice (4)Response

a.

Class A output stage

b.

Class AB output stage

c.

Class B output stage

d.

Common base output stage

Question 128

Analog Circuits
Simple Op-Amp Circuits

Appeared in Year: 2003

Question

MCQ▾

An amplifier without feedback has a voltage gain of 50, input resistance of and output resistance of . The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 129

Analog Circuits
Simple Op-Amp Circuits

Appeared in Year: 2001

Question

MCQ▾

In the figure, assume the OP-AMPs to be ideal. The output of the circuit is

Ideal Operational Amplifier Connected Back to Back

Choices

Choice (4)Response

a.

b.

c.

d.

Question 130

Appeared in Year: 2003

Question

MCQ▾

The output voltage of the regulated power supply shown in the figure is

The Circuit of Regulated Power Supply Tofind Its Output Voltage

Choices

Choice (4)Response

a.

b.

c.

d.

Question 131

Analog Circuits
Simple Op-Amp Circuits

Appeared in Year: 1999

Question

MCQ▾

An amplifier has an open loop gain of 100, an input impedance of and an output impedance of . A feedback network with a feedback factor of is connected to the amplifier in a voltage series feedback mode. the new input and output impedances, respectively are

Choices

Choice (4)Response

a.

b.

c.

d.

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