BI2005B - InAmps

Question 1: What is the primary purpose of an instrumentation amplifier?

• To amplify high-frequency signals

• To amplify audio signals for speakers

• To amplify low-level differential signals accurately

• To amplify signals from power sources

Question 2: Which of the following statements about the common-mode rejection ratio (CMRR) of an instrumentation amplifier is true?

• A higher CMRR indicates better rejection of common-mode signals.

• CMRR has no impact on the performance of an instrumentation amplifier.

• CMRR only affects the amplification of differential signals.

• A lower CMRR is desirable for accurate signal amplification.

Question 3: What is a typical application of instrumentation amplifiers?

• Amplifying high-power audio signals

• Measuring absolute voltage levels

• Filtering out noise from signals

• Amplifying small sensor signals in noisy environments

Question 4: In an instrumentation amplifier, which component is often used to set the gain of the amplifier circuit?

• Capacitor

• Diode

• Resistor network

• Transformer

Question 5: Which of the following characteristics make instrumentation amplifiers suitable for sensor interfacing?

• High voltage gain and low input impedance

• Low CMRR and high output impedance

• Low gain and high noise tolerance

• High CMRR and low noise amplification