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we can measure the resistance of the given wire using the carey foster bridge /

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Q: Viva questions on Carey foster bridge?
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What can be viva question from the transistor characteristics in common emitter?

Transistor Characteristics1) What is transistor? what are the types of transistors?Ans: Transistor is a three terminal semiconductor device.There are two types of semiconductor i.e,. n-p-n and p-n-p.2) Define n-type and p-type semiconductors.Ans: If an intrinsic semiconductoris doped with pentavalent impurity. Then it is called n-type semiconductors.If it is doped with trivalent impurity then it is called p-type semiconductor.3) What is doping?Ans: Adding trivalent or pentavalent impurity to an intrinsic semiconductor is called doping.4. What are three basic transistor connection modes? Which mode is most preferred? Why?Ans: Common-Emitter, Common-Base & Common-Collector connections.CE mode is most preferred because CE modes gives Highest voltage gain.5. Define current amplification factor of a transistor?Ans: It is defined as ratio of change in collector current to change in base current.7. What is the biasing rule of transistor?Ans: Emitter base junction should be forward biased and collector base junction should be reversed biased.8. What is semiconductor?Ans: Semiconductor is a substance which has the resistivity in between that of conductor and insulator. semiconductor has negative temperature coefficient of resistance.9) Which are the commonly used semiconductors?Ans: Germanium & Silicon