Physics Quiz: UNIT II AMPLIFIERS

What is the small signal model for a BJT amplifier?

• Linearized model representing the transistor's behavior for small changes in input signals.

• A model that only works for large changes in input signals

• A digital model representing the transistor's behavior

• A mathematical equation to calculate the gain of the amplifier

Explain the analysis of a CE amplifier.

• Determining the voltage gain, input impedance, and output impedance of the amplifier circuit.

• Assessing the color spectrum of the amplifier circuit

• Measuring the temperature of the amplifier components

• Calculating the frequency response of the amplifier

Describe the analysis of a CB amplifier.

• Calculating the resistance of the amplifier

• Measuring the frequency response of the amplifier

• Determining the color of the amplifier

• Determining the voltage gain, current gain, input impedance, and output impedance

Discuss the analysis of a CC amplifier.

• Measuring its weight and size

• Determining its voltage gain, input impedance, output impedance, and frequency response.

• Assessing its taste and smell

• Calculating its color spectrum

What are the key characteristics of a BJT small signal model?

• Input resistance, output resistance, current gain, and voltage gain

• Color, size, weight, and shape

• Speed, acceleration, force, and energy

• Temperature, pressure, volume, and density

How does a CE amplifier differ from a CB amplifier?

• CE amplifier has low input impedance and low voltage gain, while CB amplifier has high input impedance and low current gain.

• CE amplifier has high input impedance and high voltage gain, while CB amplifier has low input impedance and high current gain.

• CE amplifier has low input impedance and low voltage gain, while CB amplifier has high input impedance and high current gain.

• CE amplifier has high input impedance and low voltage gain, while CB amplifier has low input impedance and high current gain.

What are the advantages of a CC amplifier?

• Low input impedance, high output impedance, and low voltage gain

• High input impedance, high output impedance, and low voltage gain

• High input impedance, low output impedance, and high voltage gain

• Low input impedance, low output impedance, and low voltage gain

Explain the importance of small signal analysis in amplifiers.

• Small signal analysis is not important in amplifiers

• Small signal analysis is only important for large input signals in amplifiers

• Small signal analysis has no impact on the performance of amplifiers

• Small signal analysis is important in amplifiers to predict the linear behavior and performance of the amplifier for small input signals.