Quiz on P-N-P and N-P-N Transistors

What is the operation of a p-n-p transistor in the thermal equilibrium (zero bias)?

• Reverse Biased

• Saturation Mode

• Forward Biased

• Active Mode

In a p-n-p transistor under active mode operation, which junction is narrower compared to the thermal equilibrium case?

• E-B junction

• C-B junction

• B-C junction

• B-E junction

What type of biasing is applied to the E-B junction in a p-n-p transistor under active mode operation?

• Forward biased

• Reverse biased

• Zero biased

• Saturation biased

In a n-p-n transistor under the active mode operation, which junction is wider compared to the thermal equilibrium case?

• C-B junction

• B-E junction

• B-C junction

• E-B junction

What type of biasing is applied to the B-C junction in a n-p-n transistor under active mode operation?

• Forward biased

• Zero biased

• Reverse biased

• Saturation biased

What is the result of carriers injected from a nearby E junction in a n-p-n transistor under active mode operation?

• No effect on current flow

• Increase in forward-biased E junction

• Decrease in current flow

• Large current flow in a reverse-biased C junction

In the energy band diagram for a n-p-n bipolar transistor under zero bias mode, what is the corresponding energy band diagram for an active mode?

• 5

• 4

• 2

• 3

What is the main purpose of a p-n-p transistor under active mode operation?

• Voltage Amplification

• Signal Detection

• Current Flow Regulation

• Transistor Action