BJT Transistor Short Question and Answers 2024
How Many Types of Bipolar Junction Transistors (BJT)?
- NPN Transistor
- PNP Transistor
How can we make a Transistor with the help of a Diode?
There are two PN junctions in the transistor. Therefore a Transistor may be regarded as a combination of Two diodes connected back to back.
How Many Parts of Bipolar Junction Transistor(BJT)?
A Transistor has three sections of doped semiconductors. The section on one side is called Emitter and the section on the opposite side is the collector. The middle section is called the base.
What is the Doped Level of Bipolar Junction Transistors (BJT)?
The Emitter is Heavily Doped So that it can inject a large number of charge Carriers into the base. The base is Lightly Doped and very thin. It passes most of the emitter-injected charge carriers to the collector. The collector is moderately Doped.
What is a BJT transistor?
A bipolar junction transistor (BJT) is a type of transistor that uses both electron and hole carriers for conducting current.
What are the three regions of a BJT transistor?
The three regions of a BJT transistor are the
- emitter
- base
- collector
What is the function of the emitter in a BJT transistor?
What is the function of the base in a BJT transistor?
The base is the region of the BJT transistor that controls the flow of electrons or holes from the emitter to the collector.
What is the function of the collector in a BJT transistor?
What is the difference between NPN and PNP transistors?
NPN and PNP transistors differ in the type of doping used in the emitter, base, and collector regions.
What is the common emitter configuration?
The common emitter configuration is a BJT transistor configuration in which the emitter is connected to the common ground, and the input signal is applied to the base.
What is the common collector configuration?
The common collector configuration is a BJT transistor configuration in which the collector is connected to the common ground, and the output signal is taken from the emitter.
What is the common base configuration?
The common base configuration is a BJT transistor configuration in which the base is connected to the common ground, and the input signal is applied to the emitter.
What is the current gain of a BJT transistor?
The current gain of a BJT transistor is the ratio of the collector current to the base current.
What is the beta (β) value of a BJT transistor?
The beta (β) value of a BJT transistor is the ratio of the collector current to the base current.
What is the alpha (α) value of a BJT transistor?
The alpha (α) value of a BJT transistor is the ratio of the collector current to the emitter current.
What is the cutoff region of a BJT transistor?
The cutoff region of a BJT transistor is the region in which the collector current is very small and the transistor is effectively turned off.
What is the saturation region of a BJT transistor?
The saturation region of a BJT transistor is the region in which the collector current is at its maximum and the transistor is effectively turned on.
What is the active region of a BJT transistor?
The active region of a BJT transistor is the region in which the transistor is operating as an amplifier.
What is the reverse saturation current of a BJT transistor?
What is the forward bias voltage of a BJT transistor?
The forward bias voltage of a BJT transistor is the voltage required to turn the transistor on.
What is the reverse bias voltage of a BJT transistor?
The reverse bias voltage of a BJT transistor is the voltage applied to the transistor in the opposite direction to the forward bias voltage.
What is the thermal runaway effect in a BJT transistor?
The thermal runaway effect in a BJT transistor is the phenomenon in which the transistor's temperature
What is the gain of a BJT transistor?
The gain of a BJT transistor is the ratio of the output current to the input current.
What is the maximum gain of a BJT transistor?
The maximum gain of a BJT transistor is called the hfe and is typically between 50 and 300.
What is the saturation region of a BJT transistor?
What is the cutoff region of a BJT transistor?
The cutoff region is when the collector current is zero and the voltage across the collector-emitter junction is at its maximum.
What is the active region of a BJT transistor?
What is the base-emitter voltage of a BJT transistor?
The base-emitter voltage is the voltage drop across the base-emitter junction.
What is the base current of a BJT transistor?
What is the collector current of a BJT transistor?
The collector current is the current flowing into the collector of the transistor.
What is the emitter current of a BJT transistor?
The emitter current is the current flowing out of the emitter of the transistor.
What is the doping concentration in the base of a BJT transistor?
What is the transit time of a BJT transistor?
The transit time is the time it takes for the carriers to cross the base region.
What is the reverse saturation current of a BJT transistor?
The reverse saturation current is the current that flows through the transistor when it is reverse-biased.
What is the avalanche breakdown voltage of a BJT transistor?
What is the Early effect of a BJT transistor?
What is the temperature coefficient of a BJT transistor?
The temperature coefficient is the rate at which the transistor's parameters change with temperature.
What is the frequency response of a BJT transistor?
What is the typical range of beta for a BJT transistor?
The typical range of beta for a BJT transistor is 50 to 300.
What is the maximum collector current for a BJT transistor?
The maximum collector current for a BJT transistor is determined by the collector-to-emitter voltage and the power dissipation of the transistor.
What is the maximum collector-emitter voltage for a BJT transistor?
The maximum collector-emitter voltage for a BJT transistor is determined by the breakdown voltage of the collector-base junction.
What is the purpose of the emitter resistor in a BJT transistor circuit?
The emitter resistor in a BJT transistor circuit provides stability and temperature compensation.
What is the purpose of the base resistor in a BJT transistor circuit?
What is the purpose of the collector resistor in a BJT transistor circuit?
The collector resistor in a BJT transistor circuit sets the voltage gain of the circuit.
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