Test: The Inverting Configuration & The Non Inverting Configuration

Question 1

When does a resistance provide a negative feedback to an amplifier?

Accepted Answer

Resistance is connected between the negative input terminal and the output terminal

Answer

Resistance is connected between the positive input terminal and the output terminal

Answer

Resistance is connected between the input terminals

Answer

Resistance is connected between the negative input terminal and ground

Question 2

The effect of the inverting configuration is

Accepted Answer

The output signal and the input signal are out of phase by 180^o

Answer

The output signal and the input signal are in phase

Answer

The output phase is leading the input phase by 90^o

Answer

The output phase is lagging behind the input phase by 90^o

Question 3

For an ideal negative feedback configuration which of the following is true?

Accepted Answer

There is a virtual short circuit between the input terminals

Answer

There is a virtual open circuit between the input terminals

Answer

The closed loop gain for a negative feedback does not depend only on the external parameters

Answer

There is a virtual ground at the negative input terminal

Question 4

The negative feedback causes

Accepted Answer

The voltage between the two input terminals to the very small, ideally zero

Answer

The voltage between the two input resistance very high, ideally infinite

Answer

Current flow through the positive input terminal and no current flows through the negative input terminal

Answer

Both a and c

Question 5

The non-inverting closed loop configuration features a high resistance. Therefore in many cases unity gain follower called buffer amplifier is often used to

Accepted Answer

Connect high resistance source to a low resistance load

Answer

Connect a high resistance source to high resistance load

Answer

Connect low resistance source to low resistance load

Answer

Connect low resistance source to a high resistance source

Question 6

The advantage of a weighted summer operational amplifier is

Accepted Answer

All of the mentioned

Answer

It is capable of summing various input voltages together

Answer

Each input signal may be independently adjusted by adjusting the corresponding input resistance

Answer

If one needs both sign of a voltage signal then two operational amplifiers are needed

Question 7

The following is a circuit of weighted summer capable of summing coefficients of both sign. The expressions for the output voltage v₀ is

Accepted Answer

v₀ = v₁ (Ra/R1 ) (Rc/Rb ) + v₁ (Ra/R2 ) (Rc/Rb ) – v₁ (Rc/R3 ) – v₁ (Rc/R4 )

Answer

v₀ = v₁ (R1/Ra ) (Rc/Rb ) + v₁ (Ra/R2 ) (Rc/Rb ) – v₁ (Rc/R3 ) – v₁ (Rc/R4 )

Answer

v₀ = – v₁ (R1/Ra ) (Rc/Rb ) – v₁ (Ra/R2 ) (Rc/Rb ) + v₁ (Rc/R3 ) + v₁ (Rc/R4 )

Answer

v₀ = – v₁ (Ra/R1 ) (Rc/Rb ) – v₁ (Ra/R2 ) (Rc/Rb ) + v₁ (Rc/R3 ) + v₁ (Rc/R4 )

Question 8

You are provided with an ideal op amp and three 10kΩ resistors. Using series and parallel resistor combinations, how many different inverting-amplifier circuit topologies are possible?

Accepted Answer

4

Answer

2

Answer

3

Answer

5

Question 9

The loop gain for an ideal operational amplifier with R₁ = 10kΩ and R₂(negative feedback) = 1MΩ is

Accepted Answer

40 db

Answer

20 db

Answer

60 db

Answer

80 db

Question 10

In an inverting op-amp circuit for which the gain is −4 V/V and the total resistance used is 100 kΩ. Then the value of R₁ and R₂ (negative feedback)

Accepted Answer

R₁ = 20KΩ and R₁ = 80KΩ

Answer

R₁ = 80KΩ and R₁ = 20KΩ

Answer

R₁ = 40KΩ and R₁ = 60KΩ

Answer

R₁ = 50KΩ and R₁ = 50KΩ

Question 11

In the non-inverting configuration of operational amplifier

Accepted Answer

The positive terminal is connected to the power source

Answer

The positive terminal is connected to the ground directly

Answer

The negative terminal is connected to the ground directly

Answer

The negative terminal is connected to the power source

Question 12

For ideal non-inverting operational amplifier

Accepted Answer

Input resistance is infinite and output resistance is zero

Answer

Input and output resistances are infinite

Answer

Input resistance is zero and output resistance is infinite

Answer

Input and output resistances are zero

Question 13

For an ideal non-inverting operational amplifier having finite gain (A), the ratio of output voltage (v₀) to input voltage (v_i) is (given R₂ is the feedback resistance)

Accepted Answer

(1+R2/R1)/(1+((1+R2/R1)/A))

Answer

(R2/R1)/(((1+R2/R1)/A))

Answer

(1+R2/R1)/(((1+R2/R1)/A))

Answer

(R2/R1)/(1+((1+R2/R1)/A))

Question 14

The gain for an ideal non-inverting operational amplifier is (given R₂ is the feedback resistance)

Accepted Answer

R₂/R₁ + 1

Answer

R₂/R₁ – 1

Answer

R2/R1

Answer

-R2/R1

Question 15

While performing an experiment to determine the gain for an ideal operational amplifier having finite gain, a student mistakenly used the equation 1 + R₂/R₁ where R₂ is the feedback resistance. What is the percentage error in his result? Given A is the finite voltage gain of the ideal amplifier used.

Accepted Answer

(1+R2/R1)/(A+1+R2/R1) X 100%

Answer

(R2/R1)/(A+ R2/R1) X 100%

Answer

(1+R2/R1)/(A+R2/R1) X 100%

Answer

(R2/R1)/(A+1+R2/R1) X 100%

Question 16

The finite voltage gain of a non-inverting operational amplifier is A and the resistance used is R₁ and R₂ in which R₂ is the feedback resistance. Under what conditions it can one use the expression 1 + R₂/R₁ to determine the gain of the amplifier?

Accepted Answer

A >> R₂/R₁

Answer

A ~ R₂/R₁

Answer

A << R₂/R₁

Answer

None of the mentioned

Question 17

Which of the following is not true for a voltage follower amplifier?

Accepted Answer

None of the mentioned

Answer

Input voltage is equal to output voltage

Answer

Input resistance is infinite and output resistance is zero

Answer

It has 100% negative feedback

Question 18

For designing a non-inverting amplifier with a gain of 2 at the maximum output voltage of 10 V and the current in the voltage divider is to be 10 μA the resistance required are R₁ and R₂where R₂ is used to provide negative feedback. Then

Accepted Answer

R₁ = 0.5 MΩ and R₂ = 0.5 MΩ

Answer

R₁ = 0.5 kΩ and R₂ = 0.5 kΩ

Answer

R₁ = 5 MΩ and R₂ = 5 MΩ

Answer

R₁ = 5 kΩ and R₂ = 5 kΩ

Question 19

It is required to connect a transducer having an open-circuit voltage of 1 V and a source resistance of 1 MΩ to a load of 1-kΩ resistance. Find the load voltage if the connection is done

Accepted Answer

1 mV and 1 V respectively

Answer

1 μV and 1 mV respectively

Answer

0.1 μV and 0.1 mV respectively

Answer

0.1 mV and 0.1 V respectively

Question 20

Consider the figure given below. If the resistance R1 is disconnected from the ground and connected to a third power source v3, then expression for the value of v0 is

Accepted Answer

6v₁ + 4v₂ − 9v₃

Answer

2v₁ + 4v₂ − 3v₃

Answer

6v₁ + 8v₂ − 3v₃

Answer

3v₁ + 4v₂ − 3v₃

The Inverting Configuration & Non - Free MCQ Practice Test with solutions,

MCQ Practice Test & Solutions: Test: The Inverting Configuration & The Non Inverting Configuration (20 Questions)

When does a resistance provide a negative feedback to an amplifier?

The effect of the inverting configuration is

For an ideal negative feedback configuration which of the following is true?

The negative feedback causes

The non-inverting closed loop configuration features a high resistance. Therefore in many cases unity gain follower called buffer amplifier is often used to

The advantage of a weighted summer operational amplifier is

The following is a circuit of weighted summer capable of summing coefficients of both sign. The expressions for the output voltage v₀ is

You are provided with an ideal op amp and three 10kΩ resistors. Using series and parallel resistor combinations, how many different inverting-amplifier circuit topologies are possible?

The loop gain for an ideal operational amplifier with R₁ = 10kΩ and R₂(negative feedback) = 1MΩ is

In an inverting op-amp circuit for which the gain is −4 V/V and the total resistance used is 100 kΩ. Then the value of R₁ and R₂ (negative feedback)

In the non-inverting configuration of operational amplifier

For ideal non-inverting operational amplifier

For an ideal non-inverting operational amplifier having finite gain (A), the ratio of output voltage (v₀) to input voltage (v_i) is (given R₂ is the feedback resistance)

The gain for an ideal non-inverting operational amplifier is (given R₂ is the feedback resistance)

The finite voltage gain of a non-inverting operational amplifier is A and the resistance used is R₁ and R₂ in which R₂ is the feedback resistance. Under what conditions it can one use the expression 1 + R₂/R₁ to determine the gain of the amplifier?

Which of the following is not true for a voltage follower amplifier?

For designing a non-inverting amplifier with a gain of 2 at the maximum output voltage of 10 V and the current in the voltage divider is to be 10 μA the resistance required are R₁ and R₂where R₂ is used to provide negative feedback. Then

It is required to connect a transducer having an open-circuit voltage of 1 V and a source resistance of 1 MΩ to a load of 1-kΩ resistance. Find the load voltage if the connection is done

Consider the figure given below. If the resistance R1 is disconnected from the ground and connected to a third power source v3, then expression for the value of v0 is

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Analog and Digital Electronics

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The Inverting Configuration & Non - Free MCQ Practice Test with solutions,

MCQ Practice Test & Solutions: Test: The Inverting Configuration & The Non Inverting Configuration (20 Questions)

When does a resistance provide a negative feedback to an amplifier?

The effect of the inverting configuration is

For an ideal negative feedback configuration which of the following is true?

The negative feedback causes

The non-inverting closed loop configuration features a high resistance. Therefore in many cases unity gain follower called buffer amplifier is often used to

The advantage of a weighted summer operational amplifier is

The following is a circuit of weighted summer capable of summing coefficients of both sign. The expressions for the output voltage v0 is

You are provided with an ideal op amp and three 10kΩ resistors. Using series and parallel resistor combinations, how many different inverting-amplifier circuit topologies are possible?

The loop gain for an ideal operational amplifier with R1 = 10kΩ and R2(negative feedback) = 1MΩ is

In an inverting op-amp circuit for which the gain is −4 V/V and the total resistance used is 100 kΩ. Then the value of R1 and R2 (negative feedback)

In the non-inverting configuration of operational amplifier

For ideal non-inverting operational amplifier

For an ideal non-inverting operational amplifier having finite gain (A), the ratio of output voltage (v0) to input voltage (vi) is (given R2 is the feedback resistance)

The gain for an ideal non-inverting operational amplifier is (given R2 is the feedback resistance)

The finite voltage gain of a non-inverting operational amplifier is A and the resistance used is R1 and R2 in which R2 is the feedback resistance. Under what conditions it can one use the expression 1 + R2/R1 to determine the gain of the amplifier?

Which of the following is not true for a voltage follower amplifier?

For designing a non-inverting amplifier with a gain of 2 at the maximum output voltage of 10 V and the current in the voltage divider is to be 10 μA the resistance required are R1 and R2where R2 is used to provide negative feedback. Then

It is required to connect a transducer having an open-circuit voltage of 1 V and a source resistance of 1 MΩ to a load of 1-kΩ resistance. Find the load voltage if the connection is done

Consider the figure given below. If the resistance R1 is disconnected from the ground and connected to a third power source v3, then expression for the value of v0 is

Analog and Digital Electronics

Analog and Digital Electronics

Top Courses for Electrical Engineering (EE)

About this Electrical Engineering (EE) Practice Test

Explore more Electrical Engineering (EE) Study Resources

The following is a circuit of weighted summer capable of summing coefficients of both sign. The expressions for the output voltage v₀ is

The loop gain for an ideal operational amplifier with R₁ = 10kΩ and R₂(negative feedback) = 1MΩ is

In an inverting op-amp circuit for which the gain is −4 V/V and the total resistance used is 100 kΩ. Then the value of R₁ and R₂ (negative feedback)

For an ideal non-inverting operational amplifier having finite gain (A), the ratio of output voltage (v₀) to input voltage (v_i) is (given R₂ is the feedback resistance)

The gain for an ideal non-inverting operational amplifier is (given R₂ is the feedback resistance)

The finite voltage gain of a non-inverting operational amplifier is A and the resistance used is R₁ and R₂ in which R₂ is the feedback resistance. Under what conditions it can one use the expression 1 + R₂/R₁ to determine the gain of the amplifier?

For designing a non-inverting amplifier with a gain of 2 at the maximum output voltage of 10 V and the current in the voltage divider is to be 10 μA the resistance required are R₁ and R₂where R₂ is used to provide negative feedback. Then