EMJ17103/4 Quiz 1 - Op-Amp (Part I)

What is an operational amplifier (op-amp)?

• A type of resistor

• A type of capacitor

• A digital circuit

• A very high gain differential amplifier

Which of the following is a characteristic of an ideal op-amp?

• Finite input impedance

• Infinite voltage gain

• Low output impedance

• Limited bandwidth

What does CMRR stand for?

• Current Mode Rejection Ratio

• Common Mode Rejection Ratio

• Capacitance Mode Rejection Ratio

• Common Mode Resistance Ratio

What is the effect on the output when both inputs of a differential amplifier are connected to the same voltage level?

• The output remains constant

• The output is an amplified version of the input

• The output is inverted

• The output is zero

What is the primary function of negative feedback in an op-amp?

• To stabilize and control the gain

• To increase the output voltage

• To eliminate noise completely

• To reduce the input impedance

Which of the following describes the input offset voltage (V_OS)?

• The average of the two dc currents

• The differential dc voltage required to force the output to zero

• The difference between the two dc bias currents

• The maximum output voltage swing

What is the closed-loop voltage gain, A_cl,​ of a non-inverting op-amp?

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In a non-inverting amplifier configuration, how does the output signal relate to the input signal?

• They are identical

• The output is the inverse of the input

• The output is greater than the input

• The output is less than the input

In a non-inverting op-amp configuration, the attenuation factor, B, is defined by the feedback network. Which of the following expressions correctly represents B?

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What is the maximum rate of change of the output voltage in response to a step input voltage called?

• Gain bandwidth product

• Common mode gain

• Slew rate

• Input offset current