Question 1

The change in the output voltage of an op amp divided by the change in time is referred to as ________.

Accepted Answer

A)  slew rate 
B)  nulling 
C)  frequency 
D)  bootstrapping 
A)  slew rate 
B)  nulling 
C)  frequency 
D)  bootstrapping

Question 2

The best method to eliminate output error and minimize thermal drift of an op amp is by

Accepted Answer

A)  connecting a compensating capacitor. 
B)  using a nulling circuit. 
C)  using a tuned amplifier. 
D)  using a RLC filter. 
A)  connecting a compensating capacitor. 
B)  using a nulling circuit. 
C)  using a tuned amplifier. 
D)  using a RLC filter.

Question 3

What is very popular in integrated circuits because it is easier and less expensive to fabricate transistors on a chip than it is to fabricate resistors?

Accepted Answer

A)  surface mounting. 
B)  nulling. 
C)  active loading. 
D)  bootstrapping. 
A)  surface mounting. 
B)  nulling. 
C)  active loading. 
D)  bootstrapping.

Question 4

What is the preferred surface-mount style used for most op amps?

Accepted Answer

A)  dual-outline package. 
B)  small outline package. 
C)  large outline package. 
D)  single-inline package. 
A)  dual-outline package. 
B)  small outline package. 
C)  large outline package. 
D)  single-inline package.

Question 5

What type of op amp incorporates JFETs and bipolar transistors on the same chip?

Accepted Answer

A)  BIFET 
B)  JBJT 
C)  BIMOS 
D)  BJTFET 
A)  BIFET 
B)  JBJT 
C)  BIMOS 
D)  BJTFET

Question 6

What is the advantage of using external compensation for an op amp?

Accepted Answer

A)  designer has more control over the high-frequency performance. 
B)  designer has more control over the low-frequency performance. 
C)  designer has more control over the voltage gain. 
D)  designer has more control over input impedance. 
A)  designer has more control over the high-frequency performance. 
B)  designer has more control over the low-frequency performance. 
C)  designer has more control over the voltage gain. 
D)  designer has more control over input impedance.

Question 7

The 741C is the least expensive and most widely used op amp.

Accepted Answer

A) True 
 B)False

Question 8

Most op amps available today are low-power devices with a maximum power rating of less than a watt.

Accepted Answer

A) True 
 B)False

Question 9

The voltage gain formula for a closed-loop op amp is ________.

Accepted Answer

A)  Rf / R1 + 1 
B)  Rf / R1 
C)  Rf x R1 
D)  Rf x R1 + 1 
A)  Rf / R1 + 1 
B)  Rf / R1 
C)  Rf x R1 
D)  Rf x R1 + 1

Question 10

The best way to eliminate output error and minimize thermal drift of an op amp is by using a nulling circuit.

Accepted Answer

A) True 
 B)False

Question 11

Active loading is very popular in ICs because it is easier and less expensive to fabricate transistors on a chip than it is to fabricate resistors.

Accepted Answer

A) True 
 B)False

Question 12

The voltage gains and bandwidths of IC video amps can be adjusted by connecting

Accepted Answer

A)  compensating capacitors. 
B)  virtual grounds. 
C)  tunnel diodes. 
D)  different external resistors. 
A)  compensating capacitors. 
B)  virtual grounds. 
C)  tunnel diodes. 
D)  different external resistors.

Question 13

An op amp consists of a diff amp as the input stage,followed by more stages of gain,and a class B push-pull emitter follower.

Accepted Answer

A) True 
 B)False

Question 14

Unity-gain frequency is the frequency at which the voltage gain equals ________.

Accepted Answer

A)  1 
B)  10 
C)  100 
D)  1000 
A)  1 
B)  10 
C)  100 
D)  1000

Question 15

What is used to stabilize the overall voltage gain of the inverting op amp circuit?

Accepted Answer

A)  compensating frequencies 
B)  positive feedback 
C)  negative feedback 
D)  regenerative feedback 
A)  compensating frequencies 
B)  positive feedback 
C)  negative feedback 
D)  regenerative feedback

Question 16

The block diagram stages of an op amp does not include

Accepted Answer

A)  a diff amp. 
B)  voltage regulator. 
C)  amplifiers. 
D)  emitter follower. 
A)  a diff amp. 
B)  voltage regulator. 
C)  amplifiers. 
D)  emitter follower.

Question 17

IC amplifiers optimized for low noise and designed to produce less than 50 mW output power are called

Accepted Answer

A)  power amps. 
B)  medium-level amps. 
C)  video amps. 
D)  preamps. 
A)  power amps. 
B)  medium-level amps. 
C)  video amps. 
D)  preamps.

Question 18

What is the CMRR of a 741C op amp at low frequencies?

Accepted Answer

A)  9 dB 
B)  90 dB 
C)  900 dB 
D)  9000 dB 
A)  9 dB 
B)  90 dB 
C)  900 dB 
D)  9000 dB

Question 19

The ideal op amp has infinite voltage gain,infinite unity-gain frequency,infinite input impedance,and infinite CMRR.

Accepted Answer

A) True 
 B)False

Question 20

The voltage gain produced when there is a feedback path between the output and the input is called the

Accepted Answer

A)  open-loop voltage gain. 
B)  closed-loop voltage gain. 
C)  feedback voltage gain. 
D)  output voltage gain. 
A)  open-loop voltage gain. 
B)  closed-loop voltage gain. 
C)  feedback voltage gain. 
D)  output voltage gain.

Exam 16: Operational Amplifiers

The change in the output voltage of an op amp divided by the change in time is referred to as ________.

The best method to eliminate output error and minimize thermal drift of an op amp is by

What is very popular in integrated circuits because it is easier and less expensive to fabricate transistors on a chip than it is to fabricate resistors?

What is the preferred surface-mount style used for most op amps?

What type of op amp incorporates JFETs and bipolar transistors on the same chip?

What is the advantage of using external compensation for an op amp?

The 741C is the least expensive and most widely used op amp.

Most op amps available today are low-power devices with a maximum power rating of less than a watt.

The voltage gain formula for a closed-loop op amp is ________.

The best way to eliminate output error and minimize thermal drift of an op amp is by using a nulling circuit.

Active loading is very popular in ICs because it is easier and less expensive to fabricate transistors on a chip than it is to fabricate resistors.

The voltage gains and bandwidths of IC video amps can be adjusted by connecting

An op amp consists of a diff amp as the input stage,followed by more stages of gain,and a class B push-pull emitter follower.

Unity-gain frequency is the frequency at which the voltage gain equals ________.

What is used to stabilize the overall voltage gain of the inverting op amp circuit?

The block diagram stages of an op amp does not include

IC amplifiers optimized for low noise and designed to produce less than 50 mW output power are called

What is the CMRR of a 741C op amp at low frequencies?

The ideal op amp has infinite voltage gain,infinite unity-gain frequency,infinite input impedance,and infinite CMRR.

The voltage gain produced when there is a feedback path between the output and the input is called the

Introduction

Semoconductors

Diode Theory Key

Diode Circuits

Special-Purpose Diodes Key

BJT Fumdamentals

BJT Biasing

Basic BJT Amplifiers

Multistage,CC,and CB Amplifiers

Power Amplifiers

JFETS

Mosfets

Thyristors

Frequency Effects

Differential Amplifiers

Negative Feedback

Linear OP AMP Circuits

Active Filters Key

Nonlinear Op-Amp Circuit Applications Key

Oscillators Key

Regulated Power Supplies Key

Filters