हिंदी

For a transistor β =75 and IE = 7.5 mA. The value of α is ______ - Physics

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

MCQ
रिक्त स्थान भरें
Advertisements

उत्तर

For a transistor β =75 and IE = 7.5 mA. The value of α is 0.98.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 16: Semiconductors Devices - MCQ’S

APPEARS IN

संबंधित प्रश्न

Which method of biasing is used for operating a transistor as an amplifier?


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. 


Explain the working 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 diagram, explain the working of the npn transistor?  


The light emitted in an LED is due to


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 has a voltage gain A. If the amount βA of its output is applied to the input of the transistor, then the transistor becomes oscillator, when ______.


In the symbol for a transistor, the arrow head points in the direction of the ____________. 


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


In case of npn transistors, the collector current is always less than the emitter current because ______.


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 ____________.


For a common emitter configuration, if 'α' and 'β' have their usual meanings, the correct relationship between 'α' and 'β' is ______.


In a transistor, a change of 8.0 mA in the emitter current produces a change of 7.8 mA in the collector current. Then change in the base current is ____________.


In a transistor, the thickness of the base region ____________.


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 ______.


For an ideal diode, the current in the following arrangement is ______.


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 ______.


The reverse bias in a junction diode is changed from 8V to 13V, then the value of the current changes from 40μA to 60μA. The resistance of junction diode will be ______.


The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the CE configuration is 1K Ω. The peak value for an AC input voltage of 0.01 V of collector current is ______.


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.


How is a transistor biased for operating it as amplifier?


Define β


In a transistor (common emitter configuration) the ratio of power gain to voltage gain is (α and β are current ratios) ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×