Advertisements
Advertisements
प्रश्न
Define β
Define the current gain βDC for a transistor.
Advertisements
उत्तर
The dc common-emitter current ratio or current gain (βdc) is defined as the ratio of the collector current (IC) to base current (IB).
`beta_"dc" = "I"_"C"/"I"_"B"`
संबंधित प्रश्न
Why are the emitter, the base, and the collector of a BJT doped differently?
Derive the relation between α and β.
In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is ______
Draw the circuit symbol of the PNP transistor.
The principle based on which a solar cell operates is ____________.
The light emitted in an LED is due to
Explain the current flow in an NPN transistor.
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
If l1, l2, l3 are the lengths of the emitter, base and collector of a transistor, then ____________.
In the symbol for a transistor, the arrow head points in the direction of the ____________.
Least doped region in a transistor ____________.
In the study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98 then the ratio of collector current to base current will be ______.
In an npn transistor, the base current is 100 µA and the collector current is 10 mA. The emitter current is ______.
In an npn transistor, the collector current is 24 mA. If 80% of electrons reach collector, its base current in mA is ______.
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 common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is ______.
A change of 9.0 mA in the emitter current brings a change of 8.9 mA in the collector current. The value of current gain β will be ______.
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 ______.
A transistor having α = 0.8 is connected in a common emitter configuration. When the base current changes by 6 mA, the change in collector current is ______
The collector current in a common-emitter transistor amplifier is 4 mA. When the base current is increased by 20 µA, the collector current increases to 6 mA. The current gain is ______.
Explain the output characteristics of common emitter configuration of n-p-n transistor.
Define α.
In a transistor (common emitter configuration) the ratio of power gain to voltage gain is (α and β are current ratios) ______.
In the case of constants ‘α’ and ‘β’ of a transistor ______.
