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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
Calculate the resistance of a 2 km length of aluminium overhead power cable if the cross-sectional area of the cable is 100 mm 2 . Take the resistivity of aluminium to be 0.03x10 -
Working and block diagram
Multiprocessing - Many Processors Many users Many Programs Multiprocessing or also called distributed processing system provides solution to problems of above timesharing
TRANSISTOR CONFIGURATIONS: Transistor circuits may be categorized into three configurations based on which terminal is common to both of the input and output of circuit. Th
a. Determine the power flow diagram for a DC generator. b. A shunt wound DC generator delivers 496 A at 440 V to a load. The resistance of the shunt field coil is 110? and that
Hall Effect is associated with (A) Conductors. (B) Semiconductors. (C) Thermistors. (D)Solders. Ans: Hall Effect is associated with semiconductors.
merits amd demerits of series and shunt clipper
Microcomputer A microprocessor is a general purpose central processing until of a digital computer system. It has arithmetic logical unit control circuits and a set of r
To design a VI that can also be used as a Sub VI in another VI. The title of the VI will be Pulse Generator. The output from the VI will be of the type Analogue Waveform and
AC and DC distribution onboard ships
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