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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
Design combinational-sequential electronic logic gate circuit for a car wash....
What is meant by Daisy Chaining method? It does not need any priority resolving network, rather the priorities of all the devices are effectively assumed to be in sequence.
Three equal impedances of D ohms resistance and C inductive reactance are connected in a DELTA configuration. The line voltage is A00 volts. Determine the line current, phase cur
Based upon the following inputs, propose the optimal course of action for this venture: Probability of success: 30%; probability of failure: 30%; base case probability: 40%
Your manager has requested you to review current techniques for reducing, or eliminating, the effects of external interference upon electronic circuits. He requires a short report
Hysteresis loss least depends on (A) Frequency. (B) Magnetic field intensity. (C) Volume of the material. (D)Grain orientation of material.
Explain the principle of induction applied in electrical machine
The resistance of 1.5 km of wire of cross-sectional area 0.17 mm 2 is 150Ω. Determine the resistivity of the wire.
Q. DC Motor Characteristics? We gain an understanding of the speed-torque characteristics of a dc motor from Equations. In shunt motors, the field current can be simply control
12. A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safety
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