NPTEL Basic Electrical Circuits Week 8 Assingnment Answers 2024

NPTEL Basic Electrical Circuits Week 8 Assingnment Answers 2024

1.

In the above figure find the minimum value of x so that circuit is in positive feedback

• 4.66 Ω
• 6.66 Ω
• 8.66 Ω
• 12.12 Ω

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2.

Find the error in Vout if we assume the opamp is Ideal

• 12.32 %
• 30.05 %
• 45.78 %
• 6 .78 %

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3.

In the figure above find the values of R1, R2 if Rf = 2.4KΩ and Vo = 5V₂ – 6V₁

• 0.8KΩ, 0.6KΩ
• 0.6KΩ, 0.4KΩ
• 0.8KΩ, 0.4KΩ
• 0.4KΩ, 0.6KΩ

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4. From the below circuit, find the Resistances R1, R2, R3 in terms of R such that the output voltage will be V1 + 2V2+ 3V3.

• R1 = R, R2 = R/2, R3 = R/3
• R1 = R, R2 = 2R, R3 = 3R
• R1 = R, R2 = 4R, R3 = 6R
• R1 = R, R2 = R, R3 = R

Answer :- 

Answer 5 and 6 questions from the below circuit.

5. Find the Output Voltage, if V₁ = 2 V and V₂= 1.5V.

• 5 V
• 3 V
• 3.5 V
• 6 V

Answer :- 

6. How are V_a, V_b, Current direction in 5kΩ resistor respectively are affected, if V₁ and V₂ are reversed.

• No change in Va, Vb, current direction
• V_a and V_b are reversed, Current direction is also reversed
• V_a and V_b are same, Current direction is reversed
• V_a and V_b are reversed, Current direction is same

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7. Analyze the given circuit and determine a value for V₁ which is referenced to ground.

• 23 V
• 27 V
• 20 V
• 24 V

Answer :- 

8. Calculate the Voutout as labeled in the circuit diagram below

• 3 V
• 5 V
• 2 V
• 7 V

Answer :- 

9. Consider the given op-amp in the below circuit to have finite input impedance ,infinite voltage gain. Calculate the value of V_out given below

• I₁ R₂
• (I₁ +I₂)R₁
• I₂R₂
• -I₂R₂

Answer :- 

10. Find the maximum and minimum voltage at the output:-

• 15V, 0V
• 0.01V, -1V
• 5V, 0V
• 15V, -1V

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11. In the circuit given below, find the I_o flowing through the op-amp-

• 6 mA
• -6 mA
• 10mA
• -10mA

Answer :- 

12. In the circuit shown below, find the h-parameter h₂₂–

• 5/4 Ω⁻¹
• 4/5 Ω⁻¹
• 0 Ω⁻¹
• 1 Ω⁻¹

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