Advertisements
Advertisements
प्रश्न
For a transistor β =75 and IE = 7.5 mA. The value of α is ______
विकल्प
0.1
0.66
0.75
0.98
Advertisements
उत्तर
For a transistor β =75 and IE = 7.5 mA. The value of α is 0.98.
APPEARS IN
संबंधित प्रश्न
Why is the base of a transistor made thin and is lightly doped?
The common-base DC current gain of a transistor is 0.967. If the emitter current is 10mA. What is the value of base current?
In a common-base connection, the emitter current is 6.28 mA and the collector current is 6.20 mA. Determine the common-base DC current gain.
In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is ______
For a transistor IC = 15 mA, IB = 0.5 mA. What is the current amplification factor?
With the help of a neat circuit diagram, explain the transistor as an amplifier?
The principle based on which a solar cell operates is ____________.
Explain the need for a feedback circuit in a transistor oscillator.
What is rectification?
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).

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
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 ______.
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 ____________.
Which of the following regions of a transistors are, respectively, heavily dopped and lightly dopped?
In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be: ____________.
In case of npn transistors, the collector current is always less than the emitter current because ______.
A pnp transistor is used in common-emitter mode. If a change of 40 µA in base current brings a change of 2 µA in collector current with 0.04 V in base-emitter voltage, then the input resistance is ____________.
In a transistor, doping level in base is increased slightly, the collector current and base current respectively ______.
In transistor amplifier, base-emitter junction is forward biased and collector emitter junction is reverse biased. The current gain is ______.
In the case of transistor, the relation between current ratios αdc and βdc is ______.
In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is ______.
In a p-n-p transistor circuit, the collector current is 10 mA. If 90% of the holes emitted from the emitter reach the collector, ______.
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 ______.
Explain the working of the n-p-n transistor in a common base configuration.
Define β
