Question 1

Op amps designed with minimum imperfections and intended for applications such as measurement and control are referred to as

Accepted Answer

A)  accurate op amps. 
B)  precision op amps. 
C)  control op amps. 
D)  minimum op amps 
A)  accurate op amps. 
B)  precision op amps. 
C)  control op amps. 
D)  minimum op amps B

Question 2

By connecting two external capacitors,op amp voltage gain and bandwidth can be adjusted to exact requirements.

Accepted Answer

A) True 
 B)False  False

Question 3

What type of op amp circuit uses feedback to stabilize the overall gain,increase the input impedance,and decrease the output impedance?

Accepted Answer

A)  inverting 
B)  noninverting 
C)  comparator 
D)  mixer 
A)  inverting 
B)  noninverting 
C)  comparator 
D)  mixer B

Question 4

The fastest response that an op amp can have is represented by its

Accepted Answer

A)  slew rate. 
B)  frequency response. 
C)  compensating capacitor. 
D)  voltage gain. 
A)  slew rate. 
B)  frequency response. 
C)  compensating capacitor. 
D)  voltage gain.

Question 5

All op amps are internally compensated in order to prevent oscillations.

Accepted Answer

A) True 
 B)False

Question 6

The maximum output current the op amp can produce is called the

Accepted Answer

A)  maximum output current. 
B)  open-circuit output current. 
C)  short-circuit output current. 
D)  open-loop output current. 
A)  maximum output current. 
B)  open-circuit output current. 
C)  short-circuit output current. 
D)  open-loop output current.

Question 7

For a 741C op amp,CMRR is 20 dB at low frequencies.

Accepted Answer

A) True 
 B)False

Question 8

The short-circuit output current as listed on an op amp's data sheet,is the maximum output current the op amp can produce.

Accepted Answer

A) True 
 B)False

Question 9

When an op amp has no feedback path or loop,the voltage gain is minimum.

Accepted Answer

A) True 
 B)False

Question 10

Many manufacturers' data sheets refer to the unity-gain frequency as the

Accepted Answer

A)  gain-bandwidth product. 
B)  frequency of one. 
C)  gain of one. 
D)  cutoff. 
A)  gain-bandwidth product. 
B)  frequency of one. 
C)  gain of one. 
D)  cutoff.

Question 11

The characteristics of an ideal op amp does not include

Accepted Answer

A)  infinite voltage gain. 
B)  infinite input impedance. 
C)  infinite output impedance. 
D)  infinite CMRR. 
A)  infinite voltage gain. 
B)  infinite input impedance. 
C)  infinite output impedance. 
D)  infinite CMRR.

Question 12

In most operational amplifiers the output is

Accepted Answer

A)  differential. 
B)  single-ended. 
C)  a Class C amplifier. 
D)  high impedance. 
A)  differential. 
B)  single-ended. 
C)  a Class C amplifier. 
D)  high impedance.

Question 13

The highest frequency that can be amplified without slew-rate distortion is sometimes called

Accepted Answer

A)  resonant frequency. 
B)  half-power point. 
C)  power bandwidth. 
D)  cutoff frequency. 
A)  resonant frequency. 
B)  half-power point. 
C)  power bandwidth. 
D)  cutoff frequency.

Question 14

The 741C op amp has an open-loop voltage gain of approximately ________.

Accepted Answer

A)  200 
B)  2000 
C)  20,000 
D)  200,000 
A)  200 
B)  2000 
C)  20,000 
D)  200,000

Question 15

What causes the open-loop bandwidth or cutoff frequency of an op amp to be very low?

Accepted Answer

A)  negative feedback 
B)  positive feedback 
C)  high voltage gain. 
D)  internal compensating capacitor 
A)  negative feedback 
B)  positive feedback 
C)  high voltage gain. 
D)  internal compensating capacitor

Question 16

What is added to some op amps in order to prevent oscillations?

Accepted Answer

A)  external compensating capacitor. 
B)  external zener diode. 
C)  external potentiometer. 
D)  external constant current source. 
A)  external compensating capacitor. 
B)  external zener diode. 
C)  external potentiometer. 
D)  external constant current source.

Question 17

When no feedback path or loop is used,the voltage gain of an op amp is ________.

Accepted Answer

A)  one 
B)  less than 100 
C)  maximum 
D)  1000 
A)  one 
B)  less than 100 
C)  maximum 
D)  1000

Question 18

The 741C op amp has an open-loop voltage gain of ________.

Accepted Answer

A)  100 
B)  1000 
C)  10,000 
D)  100,000 
A)  100 
B)  1000 
C)  10,000 
D)  100,000

Question 19

The unity-gain frequency of an op amp is the frequency at which the voltage gain equals 100.

Accepted Answer

A) True 
 B)False

Question 20

What is the term used to describe the action of an op amp when,for example,the noninverting input voltage increases,the inverting input voltage immediately increases to the same value?

Accepted Answer

A)  virtual ground 
B)  mixing 
C)  multiplexing 
D)  bootstrapping 
A)  virtual ground 
B)  mixing 
C)  multiplexing 
D)  bootstrapping

Exam 16: Operational Amplifiers

Op amps designed with minimum imperfections and intended for applications such as measurement and control are referred to as

By connecting two external capacitors,op amp voltage gain and bandwidth can be adjusted to exact requirements.

What type of op amp circuit uses feedback to stabilize the overall gain,increase the input impedance,and decrease the output impedance?

The fastest response that an op amp can have is represented by its

All op amps are internally compensated in order to prevent oscillations.

The maximum output current the op amp can produce is called the

For a 741C op amp,CMRR is 20 dB at low frequencies.

The short-circuit output current as listed on an op amp's data sheet,is the maximum output current the op amp can produce.

When an op amp has no feedback path or loop,the voltage gain is minimum.

Many manufacturers' data sheets refer to the unity-gain frequency as the

The characteristics of an ideal op amp does not include

In most operational amplifiers the output is

The highest frequency that can be amplified without slew-rate distortion is sometimes called

The 741C op amp has an open-loop voltage gain of approximately ________.

What causes the open-loop bandwidth or cutoff frequency of an op amp to be very low?

What is added to some op amps in order to prevent oscillations?

When no feedback path or loop is used,the voltage gain of an op amp is ________.

The 741C op amp has an open-loop voltage gain of ________.

The unity-gain frequency of an op amp is the frequency at which the voltage gain equals 100.

What is the term used to describe the action of an op amp when,for example,the noninverting input voltage increases,the inverting input voltage immediately increases to the same value?

Introduction

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Basic BJT Amplifiers

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