Basic Information about Op-Amps

What does op-amp stand for?

• operational amplifier

• operational amplifier circuit

• output amplifier

• optical amplifier

What is the symbol used to represent an op-amp?

• Triangle with + and - signs

• Hexagon with + and - signs

• Circle with + and - signs

• Square with + and - signs

What is the ideal voltage gain of an op-amp?

• 10

• Negative

• Zero

• Infinite

What is the input impedance of an ideal op-amp?

• Infinite

• 10 kOhms

• Zero

• 100 Ohms

What is the output impedance of an ideal op-amp?

• 10 ohms

• 100 ohms

• 1 ohm

• 0 ohms

What is the common-mode rejection ratio (CMRR) of an op-amp?

• Input impedance / Output impedance

• Voltage gain / Current gain

• Gain bandwidth product / Slew rate

• Differential gain / Common-mode gain

What is the slew rate of an op-amp?

• Maximum rate of change of the output voltage

• Frequency response of the op-amp

• Minimum rate of change of the output voltage

• Input offset voltage of the op-amp

What is the purpose of a feedback resistor in an op-amp circuit?

• To regulate the power supply

• To adjust the input impedance

• To set the gain of the amplifier.

• To control the frequency response

What is the difference between an inverting and non-inverting op-amp configuration?

• Inverting op-amp has higher gain than non-inverting

• Non-inverting op-amp has a higher input impedance than inverting

• The difference is in the power supply voltage used

• The difference between an inverting and non-inverting op-amp configuration lies in the terminal to which the input signal is applied.

What is the significance of the offset null pins in an op-amp?

• To increase the gain of the op-amp

• To nullify input offset voltage

• To increase the input impedance of the op-amp

• To reduce the bandwidth of the op-amp