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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
Q. A common requirement is conversion from one digital code to another.Develop a table of the BCD code and the excess-3 code to be derived from it, for the decimal digits 0 to 9. S
Q. Show that the block diagram of Figure can be reduced to the form of Figure. Find G eq (s) and H eq (s).
An interrupt which can be never be turned off (ie. disabled) is called as Non-Maskable interrupt.
mosfet
how fet transistor works in self bias
The armature of a four-pole dcmachine has a simplex lap wound commutator winding (which has the number of parallel paths equal to the number of poles) with 120 two-turn coils. If t
Q. Accelerator and Investment? Accelerator, Investment: Investment spending stimulates economic growth that consecutively stimulates further investment spending (as businesses
For a 50kW three phase rectifier connected at 415 V to a point of common coupling with a short circuit capacity 500kVA modelled as an inductive source, design filters to make the s
Q. What is thermal runaway? State one method to prevent the same? The effect of changes in leakage current (ICO) and current gain(b) on the dc bias point is given by the equat
Q. If it is desired to store English-language writing with 1 byte representing each letter, find the minimum number of bits per byte that could be used. Ans. For the 26 le
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