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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
Rectifiers As discussed above the purpose of the rectifier is to convert the incoming ac from a transformer or other ac source to some form of pulsating dc. That it i
List three characteristics of lines of magnetic flux
Q. Explain braking mode of rotating machines? The braking mode has both mechanical and electric energy input. The total input is dissipated as heat. The machine is driven by th
Technical Losses in Power Systems The technical losses in power systems occur because of energy dissipated in the conductors and equipment used for transmission, transformat
Show how a typical DMA controller can be interfaced to an 8086/8085 based maximum mode system. For 8088 in maximum mode: The RQ/GT1 and RQ/GT0 pins are utilized to issue DMA
Q. Ac measurements with constant voltage amplitude reveal that the total core loss of a certain magnetic circuit is 10 W at f = 50 Hz, and 13 Wat f = 60 Hz. Find the total core los
Consider the circuit in Figure (a), which include a controlled source, and find the current in the 5-V source and the voltage across the 5- resistor by using (a) the loop-current
Define the aircraft axes & degrees of freedom. Analyse the different maneuvers that can be done by an aircraft.
program for matlab
Aim To build a simple storage oscilloscope using the PIC trainer To report on the program's design and operation Equipment PIC Trainer and PICkit3 in-circui
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