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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
function of bomb calorimeter
Define Sampling below the Nyquist Rate? A further reduction of the sampling frequency will reason one sample to be taken each period. The Case 3 plot depicts the effect of this
Q. Show NPN Common Emitter Amplifier? The common emitter configuration lends itself to voltage amplification and is the most common configuration for transistor amplifiers.
Explain Eddy currents. Eddy currents: Magnetic materials placed as in alternating magnetic fields have eddy currents also induced in them. It is because the material is subject
Explain modes of operation of programmable interval timer 8254. Mode 0 - Interrupt upon terminal count Mode 1 - Programmable one-shot Mode 2 - Rate Generator Mode 3 -
Q. Three single-phase, 10-kVA, 2400/120-V, 60- Hz transformers are connected to form a three- phase, 4160/208-V transformer bank. Each of the single-phase transformers has an equiv
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
a. Explain State Transition Diagram and define the various SDL symbols used in state transition diagram. b. Draw the signal exchange diagram for a local call used to show the se
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1.Determine and plot the ratios μ tr /μ and μ ab /μ from 5 keV to 100 MeV for (a) air, (b) water, (c) muscle, (d) bone, and (d) lead
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