August T05/TES023/EE/20150816 2015 Electronic Components And Materials Instructions: MARKS-80 Time: 3 Hrs 1. All questions are compulsory. 2. “Long Answer type Question (LAQ)” is a supply type question of 15 marks which required a typical answer of about 60-80 lines in bout 32-40 minutes. 3. “Sort Answer type Question (SAQ)” is a supply type question of 5 marks which required a typical answer of about 15-20 lines in bout 08-10 minutes. 4. Figures to the right indicate marks allotted to the questions. 5. Assume suitable data if necessary 6. Use a nonprogrammable type of scientific calculator is allowed Marks SECTION-A Q.1 Explain the following terms 1) Valence electrons 2) Electron flow 3) Insulator 4) Semiconductors 5) Valiancy 15 OR Q.1 Explain the term Electron orbit in detail. 15 Q.2 Define degree of ionization. Explain the factors affecting degree of ionization. OR Give comparison between lead acid, nickel iron and nickel Q.2 cadmium batteries. 15 Q.3 What is valence electron? 5 Q.4 Draw the labeled diagram of electroplating? 5 15 SECTION-B Q.5 What is national electric code? Explain American wire gauge ? 15 OR Q.5 Explain what is de-magnetizing an object. Explain mechanism of speaker. 15 Q.6 Write a short note on working of JFET. 15 OR Q.6 Explain light sensitive devices. 15 Q.7 What is wire table? 5 Q.8 What is zener diode? Draw its symbol. 5 Computer Generated Random Question Paper dated: 21-07-2015 10:22:48 ***BEST OF LUCK***