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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
A 10 - hp, 250-V shunt motor has an armature circuit resistance of 0.5 and a ?eld resistance of 200 . At no load, rated voltage, and 1200 r/min, the armature current is 3 A. At
(a) Identify the semiconductor type in the above diagram. (b) Explain the mechanism of generation of the voltage V AB in the above diagram. (c) An experimental setup like th
Can you explain working principle of TL/AC alternator? Ans . The core of the stator which is completely induced by the field coils, will get a residual magnetism if excited b
please, how do i design a linear phase stable recursive digital filter
Define Time-Shifting Precedes Time-Reversing and Vice Versa Signal x[n] is time-shifted by m samples (delay in time) giving x[n - m]. This signal is then reversed at n = 0 givi
Factors which affect the inductance of an inductor include: i) The number of turns of wire (N) - more turns the higher the inductance ii) The cross-sectional area of the
how does an RC 3 phase shift oscillator operates?
Astigmation control: In most modern oscilloscopes there is an additional focusing control marked Astigmation . This is used to correct an effect which exactly is analogous to
how should I calculate inverse z transform of 1/0.729z^-1+0.729z+1.5314
disadvantages of shunt&series clippers
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