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Distinguish between conductors, insulators and semiconductors on the basis of energy bands.
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What are extrinsic semiconductors? Mention its types and explain the mechanism of conduction in each.
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Explain the conduction in N Type and P Type semiconductor on the basis of band theory.
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Explain the formation of depletion layer and potential barrier in a PN junction diode.
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Draw the circuit diagram used to determine the VI characteristics of a diode and draw the forward and reverse bias characteristics of a diode. Explain the conclusions drawn from the graph.
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With the help of a labeled circuit diagram explain the working of half wave rectifier and draw the input and output waveforms.
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With the help of a labeled circuit diagram explain the working of full wave rectifier and draw the input and output waveforms.
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Write notes on LED, photodiode and solar cell.
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What is a zener diode? Draw the VI characteristics of zener diode. Explain Zener breakdown and describe the use of a zener diode as a voltage regulator.
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Explain the action of a PNP transistor and an NPN transistor.(Explain how conduction takes place in NPN and PNP transistor.)
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Draw the circuit diagram for determining transistor characteristics and describe the input and output characterisitcs of transistor in CB configuration with relevant graphs.
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Draw the circuit diagram for determining transistor characteristics and describe the input and output characterisitcs of transistor in CE configuration with relevant graphs.
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Explain the working of Transistor amplifier in CE confihuration with necessary circuit diagram.
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Explain the working of transistor oscillator.
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Explain the working of transistor as a switch.
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Draw the symbol, truth table and Boolean expression for Or, AND and NOT gate.
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Draw the symbol and truth table of NOR gate and NAND gate.
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Explain how the fundamental logic gates can be realised usinf NOR gates alone.
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Explain how the fundamental logic gates can be realised usinf NAND gates alone.