• A conceptual anomalie

    Updated: 2010-04-30 06:55:46
    I have been looking at a problem in magnetostatics about sheets of infinite surface current, positioned along the xy plane. Now clearly there is an Amperian loop parallel to the yz-plane. I...

  • torque on a rod

    Updated: 2010-04-30 06:05:42
    A 20 Kg slender rod pivoted at its center has a length of 6 m. A motor applied a torque of 2400 Nm on the rod to turn it from rest. (a) Find the average power by the motor when the rod rotates an...

  • All India Engineering/Architecture Entrance Examination 2010 (AIEEE 2010) Questions Involving Electromagnetic Induction

    Updated: 2010-04-27 08:37:05
    : Pages Home About physicsplus The Physics Site for Success In science one tries to tell people , in such a way as to be understood by everyone , something that no one ever knew before . But in poetry , it's the exact opposite Paul A . M . Dirac Tuesday , April 27, 2010 All India Engineering Architecture Entrance Examination 2010 AIEEE 2010 Questions Involving Electromagnetic Induction The following interesting multiple choice questions involving electromagnetic induction were included in the AIEEE 2010 question paper 1 A rectangular loop has a sliding connector PQ of length l and resistance R Ω and it is moving with a speed v as shown . The set-up is placed in a uniform magnetic field going into the plane of the paper . The three currents I 1 I 2 and I are 1 I 1 I 2 Blv 6 R I Blv 3 R 2 I

  • Siemens Launches Permanent Magnet-Based Gearless Wind Turbine

    Updated: 2010-04-26 05:09:49
    Progress in the development of commercially-viable direct drive wind turbines took a significant step forward last week, with the official launch by Siemens Energy of its SWT-3.0-101 wind turbine. This turbine has a faceplate rating of 3 MW, has no gearbox and uses a permanent magnet generator to produce electricity. What’s really interesting about this system [...]

  • AIPMT 2010 Multiple Choice Questions (MCQ) on Electronics

    Updated: 2010-04-20 18:26:09
    : Pages Home About physicsplus The Physics Site for Success In science one tries to tell people , in such a way as to be understood by everyone , something that no one ever knew before . But in poetry , it's the exact opposite Paul A . M . Dirac Tuesday , April 20, 2010 AIPMT 2010 Multiple Choice Questions MCQ on Electronics Questions on electronics at the level expected from you in most of the entrance examinations are generally simple . You wont find questions in this section in the IIT-JEE question paper Here are the five questions on electronics including digital circuits which appeared in the AIPMT 2010 question : paper 1 A common emitter amplifier has a voltage gain of 50, an input impedance of 100 W and an output impedance of 200 W The power gain of the amplifier is 1 50 2 500 3

  • IIT-JEE 2010 Questions on Gravitation

    Updated: 2010-04-14 16:08:30
    : Pages Home About physicsplus The Physics Site for Success In science one tries to tell people , in such a way as to be understood by everyone , something that no one ever knew before . But in poetry , it's the exact opposite Paul A . M . Dirac Wednesday , April 14, 2010 IIT-JEE 2010 Questions on Gravitation Two questions on gravitation were included in the IIT-JEE 2010 question paper . They are given below with solution . The first question is a single correct choice type single answer type multiple choice question where as the second question is an integer type question which has a single digit integer ranging from 0 to 9 as answer . 1 A thin uniform annular disc see figure of mass M has outer radius 4 R and inner radius 3 R The work required to take a unit mass from point P on its axis

  • AIPMT 2010 Questions on Friction

    Updated: 2010-04-11 16:17:01
    : Pages Home About physicsplus The Physics Site for Success In science one tries to tell people , in such a way as to be understood by everyone , something that no one ever knew before . But in poetry , it's the exact opposite Paul A . M . Dirac Wednesday , April 07, 2010 AIPMT 2010 Questions on Friction The following multiple choice questions involving friction were included in the AIPMT 2010 question : paper 1 A block of mass m is in contact with the cart C as shown in the figure . The coefficient of static friction between the block and the cart is μ . The acceleration α of the cart that will prevent the block from falling statisfies 1 α g μ 2 α mg μ 3 α g μm 4 α g μ When the cart moves forwards with acceleration α , the block of mass m presses against the vertical surface of the cart

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