Q. When was first Solid state device made?

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Q. Transistor is a solid state device is a solid state device.

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Q. What is the full form of HDD in terms of data storage?

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Q. How many PN junctions is/are present in a bipolar junction transistor?

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Q. What are the majority charge carriers in P-type semiconductors?

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Q. What are present at the potential barrier of a PN junction when no external voltage is applied?

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Q. Which is an example of Schottky diode?

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Q. Ions do not move in a PN junction.

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Q. When the p-type semiconductor is connected to positive terminal and n-type to negative terminal of a PN junction diode then the diode is said to be reverse biased.

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Q. What is the minimum voltage required to make the PN junction of a real silicon transistor in forward biased?

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Q. Which is an example of PN junction diode?

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Q. What are the parameters over which a diode characteristics curve is made?

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Q. What are the majority charge carriers in N-type semiconductors?

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Q. What happens when a trivalent semiconductor is doped with a pure semiconductor?

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Q. What happens when a pentavalent semiconductor is doped with a pure semiconductor?

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Q. Which impurity should be added to pure semiconductor to make a P-type semiconductor?

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Q. Which impurity should be added to pure semiconductor to make an N-type semiconductor?

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Q. PN junction can be made by physically joining P type and N type semiconductor.

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Q. A bipolar junction transistor has beta=250 and base current=10 micro ampere. What is the collector current?

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Q. What happens to the collector current if the emitter current increases while no base voltage is applied?

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