Earth which means it is cheap to acquire along with being a semiconducting material that requires very little effort to convert. Lastly‚ semiconductors can be made out of silicon and germanium‚ but silicon is used more commonly than germanium because it is an easy semiconductor to fabricate at low costs‚ whilst germanium requires a high purity in fabrication. These components are very important to the circuitry as all of them completes each other and will be able to work properly when they are correctly
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2010 HIGHER SCHOOL CERTIFIC ATE EXAMINATION Physics Centre Number Section I (continued) Part B – 55 marks Attempt Questions 21–32 Allow about 1 hour and 40 minutes for this part Student Number Answer the questions in the spaces provided. These spaces provide guidance for the expected length of response. Show all relevant working in questions involving calculations. Question 21 (2 marks) The optimum angle for safe re-entry of a space vehicle into Earth’s atmosphere is angle B. Outline
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MARKS: 150 TIME: 3 hours This question paper consists of 16 pages‚ a datasheet of 3 pages and a 1-page answer sheet. Copyright reserved Please turn over PHYSICAL SCIENCES P1 (PHYSICS) EXEMPLAR 2007 NATIONAL SENIOR CERTIFICATE GRADE 11 Physical Sciences/P1 DoE/Exemplar 2007 NSC Copyright reserved Please turn over 2 INSTRUCTIONS AND INFORMATION 1. 2. 3. 4. 5. 6. 7. 8. 9. Write your name and/or examination number (and centre number if applicable) in the appropriate spaces on
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Topic 12 ATOMIC STRUCTURE: Electronic configuration 12. 1. Ionization energy If an electron obtains enough energy it jumps beyond the highest energy level and becomes a free electron: the atom itself becomes a positive ion. This electron transition is represented as follows: n = 1 to n = (. Notation n = ( refers to the “world” outside the atom – beyond the control of the nucleus; any electron outside an atom has no potential energy (energy = 0). With hydrogen the ionization energy can be
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Dept. of Electrical and Electronic Engineering Course no.: EEE 2103 Name of the Paper: “COMPREHENSIVE STUDY OF P-N JUNCTION” Submitted to: Mr. Md. Ziaur Rahman Submitted by: Shafa Al Shahid (11.01.05.090) Abdullah al Rumi (11.01.05.091) Md. Shadman Khan (11.01.05.092) Reaz Ahmed (11.01.05.093) Saidur Rahman Mishu (11.01.05.094) Date of submission: 28.06.2012 Comprehensive Study On P-N Junction Diode Shafa Al Shahid ‚ Abdullah al Rumi‚ Md. Shadman Khan‚ Reaz Ahmed‚ Saidur
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Guess Paper – 2009 Class – XII Subject –Chemistry : Solid State (Q.1) The appearance of colour in solid alkali metal halides is generally due to: ( 1 mark ) (a) Frenkel defect(b) Interstitial positions(c) F-centres(d) Schottky effect (Q.2) Schottky defects in crystal is observed when ( 1 mark ) (a) unequal number of cations and anions aremissing from the lattice(b) equal number of cations and anions are missing from the lattice(c) an ion leaves its normal siteand occupies an interstitial
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(positive electrode) and cathode (negative electrode). There are many different kinds of diodes. We will restrict ourselves here to just two types‚ germanium and silicon. The only differences between the two that are significant to us will be the: 1. Voltage necessary to maintain current flow in the positive direction—approx. 0.1 to 0.3 for germanium‚ approx. 0.5 to 0.9 for silicon. 215 216 Chapter 13—AC MEASUREMENT 2. Peak inverse voltage rating (explained in the text). 3. Power-handling
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Chemistry puns With a wild imagination and a flair for puns‚ you will be able to use the names of many of the elements to take the place of other words or phrases. Some are very straightforward‚ but many of homonyms require a stretch of the imagination. Be creative and have pun! 1. Police officer. 2. Lone Ranger’s horse. 3. If they are not here‚ they ___________. 4. To press a blouse. 5. Motto for an oil well?drilling company. 6. What should you do with dead people’s bodies? 7. A fixture in
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The Integrated Circuit: The Evolution of an Electronic Miracle The microprocessor evolved over the course of many years of research‚ and people all over the world enjoy the benefits of this electronic miracle. It is difficult to think of anything that has affected modern life more than this invention. Cellular phones‚ wristwatches‚ calculators‚ automobiles‚ stereos‚ televisions‚ and computers are just a few of the thousands of electronic devices that have a microchip at the heart of its operation
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are obsolete and are now only used in antique or antiquereproduction radios‚ and for educational purposes. Tunnel diode From Wikipedia‚ the free encyclopedia Tunnel diode schematic symbol 1N3716 tunnel diode (with 0.1" jumper for scale) 10mA germanium tunnel diode mounted in test fixture of Tektronix 571 curve tracer A tunnel diode or Esaki diode is a type of semiconductor that is capable of very fast operation‚ well into the microwave frequencyregion‚ made possible by the use of the quantum
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