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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
Write some disadvantages of loosely coupled systems More complicated due to the needed additional communication hardware. They are less portable and more expensive because o
Let ω = 2π × 60 rad/s corresponding to a frequency of 60 Hz. (a) Consider v(t) = 100 √2 cos(ωt + 30°) V and i(t) = 10 √2 sin(ωt + 30°) A. Find the corresponding phasors ¯V and ¯
Derive the mathematical 3-D heat conduction equation in Spherical Coordinates? A furnace is made up of three layers of thicknesses 250 mm, 150 mm nad 100 mm with thermal conduct
3) A sine wave oscillator, in effect, converts
how many data input and data output line for 8k 16-bits?
Next, let us consider the case of a balanced delta-connected load with impedance of 5 45° supplied by a three-phase, three-wire 100-V system, as shown in Figure (a). We shall dete
a) Define the surface of revolution? b) What do you mean by ruled surface?
Draw and discuss power failure detection circuit interrupt NMI. The non-maskable interrupt (NMI) is an edge-triggered input which requests can interrupt upon the positive-edge.
working principle of crtand block diagram of cro
HT Metering The following type of meters is generally used for HT consumers: Trivector Meter, Bivector Meter, and Summation Meters. Trivector Meter
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