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A moving coil galvanometer consists of a coil in a uniform magnetic field Bo, suspended fro a fibre of torque constant C, current I produces a deflection O=nABoi/c where n is the number of turns and A is the area of the coil. The period of oscillation T=2?(I/C)1/2 where I is the moment of inertia. The resistance of the coil and the circuit in which it is placed is adjusted to give a critical dumping Rc=n2 A2Bo2/2(ic)1/2 . if the minimum detectable current produces deflection equal to thermal -root mean square value O, show that minimum current is given by
imin =( ?KT/ TRc)1/2
Q. (a) Two amplifiers, which can be represented by the model of Figure of the text, are connected in cascade (that is, head to tail), as shown in Figure. Let their parameters be R
Q. Define wireless communications? The latest wireless communications technology is the personal satellite phone. The coverage is planetary and one can reach anywhere on earth.
The circuit below will be most efficiently analyzed by obtaining the Thevenin equivalent circuit for the circuit to the left of the points (a-b) on the schematic. The capacitor is
Methods of Testing Irrespective of reasons, testing is commonly carried out 1. On site, or 2. In a Meter Testing Station (MTS) accredited as per IS/ISO/IEC 17025.
Hi, I need help simulating my project in Proteus, problem is, I have never used it before. This is what I have so far. However, feel free to suggest ideas that will make the circ
MVI Move Immediate Instruction This form of the instruction is used to copy 8bit data ( specified in the instruction ) directly into the register or memory pointed by
Give four examples of natural insulating materials. Illustrations of the natural insulating materials are rubber, cotton, wood and mica.
When MT 2 is Negative and g is positive In this case gate current flows through junctions P 2 N 2 electrons are injected from N 2 layer to P 2 a result junct
Q. Can you explain Binary Number Systems? The Binary numbers are used to represent digital information because like most digital systems, binary numbers have only two possible
An arrangement of Windows so every window is neatly stacked with only the title bar of every window is showing.
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