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

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 ______ 

पर्याय

  • 0.1

  • 0.66

  • 0.75

  • 0.98

MCQ
रिकाम्या जागा भरा
Advertisements

उत्तर

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

shaalaa.com
  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?


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? 


The principle based on which a solar cell operates is ____________.


The light emitted in an LED is due to


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


Explain the current flow in an NPN transistor.


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 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).


If l1, l2, l3 are the lengths of the emitter, base and collector of a transistor, then ____________.


For a transistor, the current ratio 'βdc' is defined as the ratio of ______.


Least doped region in a transistor ____________.


In switching circuit, transistor is in ON state. Values of Iand 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 an npn transistor, the collector current is 24 mA. If 80% of electrons reach collector, its base current in mA is ______.


In switching circuit, transistor is in ON state, values of IE and lB are 10 mA and 0.8 mA respectively and RL is 2 k`Omega`. If VCE is 7.6 V, then VCC 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 ____________.


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 ____________.


A transistor when connected in common emitter mode has a ____________.


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


In the case of transistor, the relation between current ratios αdc and βdc 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 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 ______.


For a transistor,  αdc and βdc are the current ratios, then the value of `(beta_"dc"-delta_"dc")/(alpha_"dc".beta_"dc")` 


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 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 ______.


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 ______.


Define peak value of alternating signal.


Define α.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×