मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is ______ - Physics

Advertisements
Advertisements

प्रश्न

In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is ______ 

पर्याय

  • 45

  • 50

  • 55

  • 60

MCQ
रिकाम्या जागा भरा
Advertisements

उत्तर

In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is 55.

shaalaa.com
Bipolar Junction Transistor (BJT)
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 16: Semiconductors Devices - MCQ’S

संबंधित प्रश्‍न

Why is the base of a transistor made thin and is lightly doped?


In a common base configuration, the transistor has an emitter current of 10 mA and a collector current of 9.8 mA. The value of base current is ______ 


Draw the circuit symbol of the PNP transistor. 


Draw the circuit symbol for NPN and PNP transistors. What is the difference in the Emitter, Base, and Collector regions of a transistor? 


With the help of a neat circuit diagram, explain the transistor as an amplifier? 


Draw the circuit diagram to study the characteristic of the transistor in common emitter mode. Draw the input and output characteristics. 


The output of the following circuit is 1 when the input ABC is


Give the Barkhausen conditions for sustained oscillations.


Explain the current flow in an NPN transistor.


Explain the need for a feedback circuit in a transistor oscillator.


Describe the function of a transistor as an amplifier with the neat circuit diagram. Sketch the input and output wave forms.


Assuming VCEsat = 0.2 V and β = 50, find the minimum base current (IB) required to drive the transistor given in the figure to saturation.


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


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 ______.


In an npn transistor, the collector current is 24 mA. If 80% of electrons reach collector, its base current in mA is ______.


In a transistor in CE configuration, the ratio of power gain to voltage gain is ____________.


In an npn transistor circuit, the collector current is 10 mA. If 90% of the electrons emitted reach the collector, the emitter current (IE) and base current (IB) are given by ____________.


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, the thickness of the base region ____________.


In transistor amplifier, base-emitter junction is forward biased and collector emitter junction is reverse biased. The current gain is ______.


In common emitter amplifier, a change of 0.2 mA in the base current causes a change of 5 mA in the collector current. If input resistance is 2K `Omega` and voltage gain is 75, the load resistance used in the circuit 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 ______.


In the common-emitter configuration of a transistor, the current gain is more than 1 because [lb, le, and lc are base, emitter, and collector currents respectively] ______


A transistor is used as a common emitter amplifier with a load resistance 2 KΩ. The input resistance is 150 Ω. Base current is changed by 20 µA which results in a change in collector current by 1.5 mA. The voltage 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 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 ______.


How is a transistor biased for operating it as amplifier?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×