SATHEE: semiconductor-electronics--materials-devices-and-simple-circuits Question 22

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सेमीकंडक्टर इलेक्ट्रॉनिक्स सामग्री उपकरण और सरल सर्किट

Question: Q. 1. (i) In the following diagram, is the junction diode forward biased or reverse biased?

U] [OD I, II, III 2017]

(ii) Draw the circuit diagram of a full wave rectifier and state how it works.

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Solution:

Ans. (i) The nature of biasing

(ii) Diagram of full wave rectifier Working

(i) Reverse Biased

(ii) Diagram of full wave rectifier :

Working : The diode $D_{1}$ is forward biased during one half cycle and current flows through the resistor, but diode $D_{2}$ is reverse biased and hence no current flows through it. During the other half of the signal, $D_{1}$ gets reverse biased and no current passes through it, $D_{2}$ gets forward biased and current flows through it. In both half cycles current, through the resistor, flows in the same direction.

(Note : If the student just draws the following graphs (but does not draw the circuit diagram), award $1 / 2$ mark only.)

[CBSE Marking Scheme 2017]

Detailed Answer :

(i) The diode shown in diagram is reverse biased as in case of reverse bias $p$ junction is connected to -ve of battery and $n$ junction with positive which causes effective barrier voltage enhancement $V_{B} + V$ with high resistance.

सेमीकंडक्टर इलेक्ट्रॉनिक्स सामग्री उपकरण और सरल सर्किट

Detailed Answer :

विषयसूची

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

सेमीकंडक्टर इलेक्ट्रॉनिक्स सामग्री उपकरण और सरल सर्किट

Detailed Answer :

विषयसूची

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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