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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
Four voicemessages, each with 3-kHz bandwidth, are to be sampled at Nyquist rate, and time- multiplexed with samples taken at twice the Nyquist rate from six analog monitoring sign
Q. What is the difference between field effect transistor and the bipolar junction transistor? The important points of the comparison between the field effect transistor ands t
Carry Flag CY is reset as explained above. ( in chapter 1 we have sen in the 2 complement methods of subtraction that the carry is set when the result is positive. He
Explain Fundamentals of Load Flow Analysis The calculation of electrical power system load flow or current flow is a problem which has no direct solution. It is not that a solu
Q. A rigid 50- coaxial transmission line has air as dielectric. If the radius of the outer conductor is 1 cm, find the cutoff frequency
Q. Consider two 1-C charges separated by 1 min free space. Show that the force exerted on each is about one million tons.
what is a button cells and how is it used on a low current electronic circuit
four configurations of differential amplifiers
a. Simulate a diode application circuit using Multisim EWB. Compare calculated and simulated results Each student must choose one of the following circuits from question 1 (Ref
Q. An interesting application of the SRFF is as a buffer in overcoming contact bounce in mechanical switches. These switches, of the toggle type, may be used to change the logic st
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