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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. Open-loop control system? An open-loop system is one in which the control action is independent of the output or desired result, whereas a closed-loop (feedback) system is o
Triac As the name suggests TRIAC is advice which has three electrodes and works on AC. The three terminals of triac are MTI ( Main Terminal ) MT2 ( Main terminal ) an
restructuring
Q. Show the r’s Complement? Step1- get the (r-1)'s complement Step 2- add 1 to the result ex. 935 10 9 9 9
A switch-mode power supply is to be designed with the following specifications: input voltage V s = 48 V ± 10%, output voltage V o = 5 V, switching frequency f s = 100 kHz, outp
Explain Register Direct and Indirect data addressing mode (with examples) available in microprocessors. Register Direct Modes and Register Indirect Modes: Does not giv
Define Salient-pole Rotor Construction - Synchronous Machines? Salient-pole rotor construction on the other hand, may be used for low to medium speed applications. The machines
Calculate the mechanical speed of rotar: An asynchronous machine of 460V, 25hp, 4 poles with rotor wound in Y has the following data (of the side stator): Resistance of the
use of ranging and attenuator circuit
'Pentium processor has a superscalar architecture'. Explain the meaning of the statement. The Pentium microprocessor is organized along with three execution units. Single execu
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