: Physicsplus The Physics Site for Success Pages Home About IIT-JEE AIPMT AIEEE AIEEE Questions IIT-JEE Questions AIPMT Questions Sunday , July 31, 2011 Kerala Engineering Entrance KEAM Engineering 2011 Questions MCQ on Transistor Amplifier and Oscillator Today we will discuss two multiple choice questions involving transistors which appeared in Kerala Engineering Entrance KEAM Engineering 2011 question paper . These questions are simple as is the case with questions in this section at the level expected in the case of 12 th grade Plus Two . students 1 In a common emitter transistor amplifier , the output resistance is 500 K Ω and the current gain β 49. If the power gain of the amplifier is 5 10 6 the input resistance is A 325 Ω B 165 Ω C 198 Ω D 225 Ω E 240 Ω Power gain A p is given by A
Free Daily Updates : Home RareMetalStock RareMetalTV RareMetalAudio RareMetalApps Blog News Media Team Events Friday , July 29, 2011 Rising Rare Earth Prices Cripple Japan's June Imports July 29, 2011 Source : NASDAQ Japanese imports of rare earths from China fell 13 percent in June to 1,386 tonnes as a rise in prices made it unaffordable to many Japanese hi-tech . companies According to the ministry of finance data , this is the second month-on-month drop in a row . As Western buyers of the all-important metallic elements failed to find new supplies and counter China's stranglehold on the market , prices have continued to shoot higher . In 2010 rare earth prices shot up . fourfold Orders from Japanese manufacturers for end-users to secure the material for July-September remain strong ,Free Daily Updates : Home RareMetalStock RareMetalTV RareMetalAudio RareMetalApps Blog News Media Team Events Friday , July 29, 2011 China's rare earth companies eager to pass environmental checks July 25, 2011 Source : Shanghai Daily China's rare earth enterprises are busy upgrading production equipment and installing environmental protection systems to meet higher environmental standards set by the country , the China Securities Journal reported on . Friday The Ministry of Environmental Protection issued a statement in April , saying the country will launch a string of environmental checks for the rare earth industry this . year The checks include self-checks by rare earth companies , preliminary checks by provincial environmental protection authorities and final checks by the . ministryFree Daily Updates : Home RareMetalStock RareMetalTV RareMetalAudio RareMetalApps Blog News Media Team Events Friday , July 29, 2011 Quarterly Cashflow and Activities Report July 29, 2011 Source : Arafura Highlights Whyalla Rare Earths Complex site . secured EIS guidelines released for Whyalla Rare Earths Complex . Work . ongoing Scope for Nolans Project Bankable Feasibility Study . expanded Price for Nolans Rare Earth Oxide mix surpasses US$208 . kg A key Technology Program work stream successfully . completed Major drill program continues at Nolans Discussions with target customers in progress Arafura joins REE World Advisory . Board On 1 July , Arafura was pleased to announce the execution of a sale and purchase agreement for approximately 800 hectares of land in Whyalla , SouthFree Daily Updates : Home RareMetalStock RareMetalTV RareMetalAudio RareMetalApps Blog News Media Team Events Friday , July 29, 2011 Soaring rare metal prices hitting exports out of China Rare metal prices are having an impact on demand out of . China Reuters reports that Japan’s imports of rare earths from China fell almost 13 in June from May to their lowest level since February and a second month-on-month drop in a row , according to Finance Ministry . data Japan’s June imports of rare earth from China stood at 1,386 tonnes , down from 1,592 tonnes in May and the lowest since February , when 1,138 tonnes were shipped the island . country Japanese companies consume about 30,000 tonnes of rare earths each year , according to . Reuters The drop in imports in June suggests the prices wereFree Daily Updates : Home RareMetalStock RareMetalTV RareMetalAudio RareMetalApps Blog News Media Team Events Friday , July 29, 2011 China's rare earth companies eager to pass environmental checks July 29, 2011 Source : China Daily China's rare earth enterprises are busy upgrading production equipment and installing environmental protection systems to meet higher environmental standards set by the country , the China Securities Journal reported on . Friday The Ministry of Environmental Protection issued a statement in April , saying the country will launch a string of environmental checks for the rare earth industry this . year The checks include self-checks by rare earth companies , preliminary checks by provincial environmental protection authorities and final checks by the . ministryFree Daily Updates : Home RareMetalStock RareMetalTV RareMetalAudio RareMetalApps Blog News Media Team Events Friday , July 29, 2011 Industry Commentary and Rare Earth Quotas July 29, 2011 Source : Arafura Australian rare earths company Arafura Resources Limited ASX : ARU Arafura or the Company today acknowledges recent favourable industry analysis and commentary in regards to both Arafura and the Rare Earths industry . The Company is pleased to provide a . summary A recently published research note by Resource Capital Research RCR highlights the excellent intrinsic value of the Nolans Project even at rare earth prices much less than current levels . RCR’s analysis also describes a very positive market outlook for rare earths over the next 5 years with increasing REE demand 7 9 per annum: Physicsplus The Physics Site for Success Pages Home About IIT-JEE AIPMT AIEEE AIEEE Questions IIT-JEE Questions AIPMT Questions Wednesday , July 20, 2011 Multiple Choice Questions on Magnetic Force on Moving Charges Questions involving magnetic force on moving charges are included in most of the medical , engineering and other degree entrance examinations . Here are some simple questions which may easily tempt you to commit mistakes : 1 The magnetic Lorentz force equation is F q v B In this equation a F v and B must be mutually . perpendicular b F must be perpendicular to v but not necessarily to B c F must be perpendicular to B but not necessarily to v d v must be perpendicular to both F and B e F must be perpendicular to both B and v The equation F q v B gives the magnetic force F on a