Advertisements
Advertisements
प्रश्न
Which method of biasing is used for operating a transistor as an amplifier?
Advertisements
उत्तर १
For use as an amplifier, the transistor should be inactive mode. Therefore, the emitter-base junction is forward biased and the collector-base junction is reverse biased. Also, an amplifier uses an emitter bias rather than a base bias.
उत्तर २
For transistor operating as an amplifier, the emitter-base junction is forward biased while the collector-base junction is reverse biased.
संबंधित प्रश्न
Why are the emitter, the base, and the collector of a BJT doped differently?
In a common-base connection, a certain transistor has an emitter current of 10mA and a collector current of 9.8 mA. Calculate the value of the base current.
Derive the relation between α and β.
The principle based on which a solar cell operates is ____________.
Explain the current flow in an NPN transistor.
What is rectification?
Describe the function of a transistor as an amplifier with the neat circuit diagram. Sketch the input and output wave forms.
In the circuit shown in the figure, the BJT has a current gain (β) of 50. For an emitter-base voltage VEB = 600 mV, calculate the emitter-collector voltage VEC (in volts).

In a common emitter amplifier, the input resistance is 1000 Ω, the peak value of Input signal voltage is 5 mV, and β = 60. The peak value of output current is
For a transistor, the current ratio 'βdc' is defined as the ratio of ______.
In the symbol for a transistor, the arrow head points in the direction of the ____________.
Ve, Vb, and Ve are emitter, base, and collector voltage respectively for npn transistor in CE mode. Amplifier works for the combination of biasing voltage equal to ______.
In an npn transistor, the base current is 100 µA and the collector current is 10 mA. The emitter current is ______.
ln switching circuit, transistor is in ON state and values of IC and IB are 4.2 mA and 5 µA respectively and RC= l k`Omega` and RB= 300 k`Omega`. If VBE = 0.5 V, find the value of VBB.
In switching circuit, transistor is in ON state, values of IE and lB are 10 mA and 0.8 mA respectively and RL is 2 k`Omega`. If VCE is 7.6 V, then VCC is ____________.
Which of the following regions of a transistors are, respectively, heavily dopped and lightly dopped?
For a common emitter configuration, if 'α' and 'β' have their usual meanings, the correct relationship between 'α' and 'β' is ______.
The current gain `alpha` of a transistor is 0.95. The change in collector current corresponding to a change of 0.4 mA in the base current in a common emitter arrangement is ______.
In transistor amplifier, base-emitter junction is forward biased and collector emitter junction is reverse biased. The current gain is ______.
In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is ______.
A transistor is connected in C - E mode. If collector current is 72 × 10-5 A and α = 0.96, then base current will be ______.
In a study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98. The collector current is 3mA, then base current will be approximately ______.
A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω and an output impedance of 2000Ω. The power gain of the amplifier is ______.
For a transistor, αdc and βdc are the current ratios, then the value of `(beta_"dc"-delta_"dc")/(alpha_"dc".beta_"dc")`
The current amplification factor for a transistor in its common emitter mode is 50. The current amplification factor in the common base mode of the transistor is ______.
In a CE amplifier, the current gain is 80 and the emitter current is 9 mA. The base current is ______.
Explain the output characteristics of common emitter configuration of n-p-n transistor.
Define β
