Advertisements
Advertisements
प्रश्न
Define α.
Define the current gain αDC for a transistor.
Advertisements
उत्तर
The dc common-base current ratio or current gain (αdc) is defined as the ratio of the collector current (Ic) to emitter current. (Ig)
`alpha_"dc" = "I"_"C"/"I"_"E"`
संबंधित प्रश्न
Derive the relation between α and β.
Which method of biasing is used for operating a transistor as an amplifier?
For a transistor IC = 15 mA, IB = 0.5 mA. What is the current amplification factor?
With the help of a neat diagram, explain the working of the npn transistor?
The output of the following circuit is 1 when the input ABC is
Explain the current flow in an NPN transistor.
Sketch the static characteristics of a common emitter transistor and bring out the essential features of input and output characteristics.
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).
The condition to convert an amplified signal into an oscillating signal is ______
A transistor having α = 0.8 is connected in common emitter configuration. When the base current changes by 6 mA, then the change in collector 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 ____________.
In switching circuit, transistor is in ON state. Values of IC and IB are 5.2 mA and 10 µA respectively and value of RC is 1 k`Omega`. If Vcc is at 5.5 V, then VCE is ______.
In a transistor in CE configuration, the ratio of power gain to voltage gain is ____________.
A transistor when connected in common emitter mode has a ____________.
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 a transistor, doping level in base is increased slightly, the collector current and base current respectively ______.
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 ______.
For an ideal diode, the current in the following arrangement is ______.
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 conducting wire has length 'L1' and diameter 'd1'. After stretching the same wire length becomes 'L2' and diameter 'd2' The ratio of resistances before and after stretching is ______.
The base current in common emitter mode of the transistor changes by 10 µA. If the current gain of the transistor is 50, then change in collector current is ______.
Explain the working of the n-p-n transistor in a common base configuration.
In a CE amplifier, the current gain is 80 and the emitter current is 9 mA. The base current is ______.
Define peak value of alternating signal.
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 ______.
