BJT Small Signal Mode Quiz

What is the BJT small signal model used for?

• To analyze and design electronic circuits using field-effect transistors

• To analyze and design electronic circuits using bipolar junction transistors.

• To control the speed of a DC motor

• To measure the temperature of a semiconductor material

How is the BJT small signal model different from the large signal model?

• The small signal model ignores the linear behavior of the BJT around its operating point.

• The small signal model focuses on the linear behavior of the BJT around its operating point.

• The small signal model is used for high power applications of the BJT.

• The small signal model focuses on the digital behavior of the BJT around its operating point.

Explain the concept of hybrid-pi model in BJT.

• The hybrid-pi model represents the transistor as a combination of a capacitor and an inductor.

• The hybrid-pi model represents the transistor as a combination of a non-linear resistor and a voltage source.

• The hybrid-pi model represents the transistor as a combination of a voltage source and a diode.

• The hybrid-pi model represents the transistor as a combination of a linear resistor and a current source.

What are the key parameters in the hybrid-pi model?

• gm, ro, Cpi

• hfe, Vce, Vbe

• Cmu, gm, Vce

• Vbe, Vce, Ib

What is the common emitter configuration in BJT?

• Rare emitter

• Uncommon emitter

• Common emitter

• Unpopular emitter

Explain the working principle of common emitter configuration.

• The working principle of common emitter configuration is that the input signal controls the current flowing through the base-emitter junction, which in turn controls the current flowing through the collector-emitter junction, resulting in amplification of the input signal.

• The working principle of common emitter configuration is that the input signal controls the current flowing through the emitter-base junction, resulting in amplification of the input signal.

• The working principle of common emitter configuration is that the input signal controls the voltage across the collector-emitter junction, resulting in amplification of the input signal.

• The working principle of common emitter configuration is that the input signal controls the current flowing through the collector-emitter junction, resulting in amplification of the input signal.

What is the common base configuration in BJT?

• Common base

• Unpopular base

• Rare base

• Uncommon base

Explain the working principle of common collector configuration.

• The common collector configuration works by using the emitter as the output, the base as the input, and the collector as the common terminal.

• The common collector configuration works by using the collector as the output, the emitter as the input, and the base as the common terminal.

• The common collector configuration works by using the collector as the output, the base as the input, and the emitter as the common terminal.

• The common collector configuration works by using the base as the output, the emitter as the input, and the collector as the common terminal.