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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
You will develop a simulation that will consist of the following five components: Controller: This script component controls the simulation. It shall permit the user to: 1. C
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Write an assembly language program to determine one's complement and two's complement of an 8-bit number. Ans One's complement of an 8-bit number LDA 2501H CMA STA
A 6-pole armature has 1000 conductors and a flux per pole of 40mWb. Determine the e.m.f. generated when running at 600 rev/min when (a) lap wound (b) wave wound.
Q. What are the different types and uses of delay line in CRO? OR Why is a delay line used in the vertical section of the oscilloscope? Sol. All electronic circui
1 Explain the advantages and disadvantages of optical fiber versus copper Medium of communication 2 Define multiplexing. Explain TDM 3 Describe the protocol architecture and
Q. Counters are used to realize various dividers in the schematic representation of the digital clock shown in Figure. The blocks labeled "logic array" are logic gate combinations
Q. Give suitable block diagram to explain the working of electronic multimeter. Sol. An electronic multimeter is a laboratory instrument which is capable of measurement of
Q. What are the three transistor configurations? The three configurations are common base (CB),common collector (CC) & common emitter(CE). The connection in which the base
a 400V 4-pole DC generator takes an armature current of 50A when rotating at 626 rpm. the armature circuit resistance is 0,25ohms. determine the generated emf. DOC
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