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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
dc to ac converter by IBGT
compear copper and aluminum conductore in termes of price ,weight,resistance for equal length .
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Q. A single-phase, 3-kVA, 220:110-V, 60-Hz transformer has a high-voltage winding resistance of 0.3 , a low-voltage winding resistance of 0.06 , a leakage reactance of 0.8 on i
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A DT LTI system has the following impulse response: h(n)=[cos(pi/+delta(n)] u(n-3)u(n-2) (a) Find the system’s frequency response h(e^jw ). (b) Sketch the magnitude and phase respo
Draw a logic diagram to implement F=ABCDE using only 3 input AND gates
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determine mimimum SOP for the following swiching funcion using K-map: F(x1,x2,x3,x4)=Summationof m(4,6,8,10,11,12,15)+DC(3,5,7,9)
Write explanatory notes on Hard disk drive controller. Hard disk drive controller: It converts instructions from software running upon the computer to the electrical signals
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