Electronic Devices and Circuits Questions and Answers – The Non Inverting Configuration

This set of Electronic Devices and Circuits Multiple Choice Questions & Answers (MCQs) focuses on “The Non Inverting Configuration”.

1. In the non-inverting configuration of operational amplifier
a) The positive terminal is connected to the ground directly
b) The negative terminal is connected to the ground directly
c) The positive terminal is connected to the power source
d) The negative terminal is connected to the power source
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2. For ideal non-inverting operational amplifier
a) Input and output resistances are infinite
b) Input resistance is infinite and output resistance is zero
c) Input resistance is zero and output resistance is infinite
d) Input and output resistances are zero
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3. 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)
a) (1+R2/R1)/(1+((1+R2/R1)/A))
b) (R2/R1)/(((1+R2/R1)/A))
c) (1+R2/R1)/(((1+R2/R1)/A))
d) (R2/R1)/(1+((1+R2/R1)/A))
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4. The gain for an ideal non-inverting operational amplifier is (given R₂ is the feedback resistance)
a) R₂/R₁ – 1
b) R₂/R₁
c) -R₂/R₁
d) R₂/R₁ + 1
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5. 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.
a) (R2/R1)/(A+ R2/R1) X 100%
b) (1+R2/R1)/(A+R2/R1) X 100%
c) (1+R2/R1)/(A+1+R2/R1) X 100%
d) (R2/R1)/(A+1+R2/R1) X 100%
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6. 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?
a) A ~ R₂/R₁
b) A >> R₂/R₁
c) A << R₂/R₁
d) None of the mentioned
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7. Which of the following is not true for a voltage follower amplifier?
a) Input voltage is equal to output voltage
b) Input resistance is infinite and output resistance is zero
c) It has 100% negative feedback
d) None of the mentioned
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8. 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 R₂ where R₂ is used to provide negative feedback. Then
a) R₁ = 0.5 MΩ and R₂ = 0.5 MΩ
b) R₁ = 0.5 kΩ and R₂ = 0.5 kΩ
c) R₁ = 5 MΩ and R₂ = 5 MΩ
d) R₁ = 5 kΩ and R₂ = 5 kΩ
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9. 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 (a) directly and (b) through a unity-gain voltage follower.
a) 1 μV and 1 mV respectively
b) 1 mV and 1 V respectively
c) 0.1 μV and 0.1 mV respectively
d) 0.1 mV and 0.1 V respectively
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10. 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

a) 2v₁ + 4v₂ − 3v₃
b) 6v₁ + 8v₂ − 3v₃
c) 6v₁ + 4v₂ − 9v₃
d) 3v₁ + 4v₂ − 3v₃
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Sanfoundry Global Education & Learning Series – Electronic Devices and Circuits.

To practice all areas of Electronic Devices and Circuits, here is complete set of 1000+ Multiple Choice Questions and Answers.