LIC-Adder

What is the purpose of an adder circuit using operational amplifiers?

• a) To subtract two input voltages
• b) To multiply two input voltages
• c) To divide two input voltages
• d) To sum two input voltages

Which of the following circuits can be used as an adder using operational amplifiers?

• a) Inverting amplifier
• b) Non-inverting amplifier
• c) Both A and B
• d) Voltage follower

What is the formula for the output voltage of an inverting adder circuit using operational amplifiers?

• a) Vout = (Rf/R1) * Vin1
• b) Vout = (Rf/R1) * Vin2
• c) Vout = -((Rf/R1) * Vin1) - ((Rf/R2) * Vin2)
• d) Vout = (Rf/R1) * (Vin1 + Vin2)

Which of the following is true for a non-inverting adder circuit using operational amplifiers?

• a) The input voltages are in phase
• b) The input voltages are out of phase
• c) The output voltage is the sum of the input voltages
• d) The gain of the circuit is always less than 1

What is the purpose of the resistor network in an adder circuit using operational amplifiers?

• a) To amplify the input voltages
• b) To provide a feedback path
• c) To control the gain of the circuit
• d) To sum the input voltages

What is the main advantage of using an operational amplifier as an adder?

• a) High input impedance
• b) Low output impedance
• c) High gain
• d) High common mode rejection ratio

Which of the following is an example of a practical application of an adder using operational amplifiers?

• a) Audio mixer
• b) Inverting amplifier
• c) Voltage follower
• d) Differentiator

What is the input impedance of an adder circuit using operational amplifiers?

• a) Low
• b) High
• c) Variable
• d) Equal to the output impedance

Which of the following is true for a voltage follower used as an adder using operational amplifiers?

• a) It has a gain of less than 1
• b) It has a gain of greater than 1
• c) It has a gain of exactly 1
• d) It cannot be used as an adder