AET731-Principles & Applications of Analog Electronics

What is an operational amplifier (Op-Amp)?

• A high-gain DC amplifier

• A power amplifier

• A radio frequency amplifier

• A low-gain AC amplifier

What is the ideal open-loop gain of an Op-Amp?

• Zero

• One

• Infinite

• 100

How many input terminals does a typical Op-Amp have?

• One

• Two

• Three

• Four

What are the names of the two input terminals of an Op-Amp?

• Positive and negative terminals

• Non-inverting and inverting terminals

• High and low terminals

• Left and right terminals

What is the symbol for the inverting input?

• +

• –

• ×

• ÷

Which configuration gives a positive gain in an Op-Amp circuit?

• Inverting amplifier

• Non-inverting amplifier

• Differentiator

• Integrator

In an inverting amplifier, the input signal is applied to which terminal?

• Non-inverting terminal

• Inverting terminal

• Output terminal

• Ground

What is the typical input impedance of an ideal Op-Amp?

• Zero

• Very low

• Very high (infinite)

• Equal to output impedance

What is the output impedance of an ideal Op-Amp?

• Zero

• nfinite

• Same as input impedance

• 100 ohms

What happens to the output of an Op-Amp when the voltage difference between its inputs is zero (ideal case)?

• Output is maximum positive

• Output is maximum negative

• Output is zero

• Output is unpredictable