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A d'Arsonval movement is rated 1 mA, 100 Ω.
a. What is the current sensitivity?
b. Design a 20-A ammeter using the above movement. Show the circuit and component values.
Compare the noise floor in dBm with the GSM system (BW= 200 kHz) used by the European cell standards (available today in the US thru the AT&T acquired from the Cingular systems) assuming the same noise figure (NF) of 10 dB for the same receivers.
Determine the RMS generated voltage of an alternator used for a 50 Hz system if it has a flux per pole of 0.015 Wb, 72 turns per phase and a winding constant of 0.96
Assume white Gaussian noise of zero means and power spectral density No/2 is added to the signal at the receiver input. Find the expression for SNRout (SNR at the output of the receiver)
If you measured a sinusoidal waveform on both the AC and DC scaleswith the same multimeter, and measured 1.5 volts AC scale and 1.0volts DC scale, what would be the maximum and minimum of the waveform displayed on the oscilloscope
A nnpn transistor has an emitter area of 10mm x10mm. The dopingconcentrations are as follows: in the emitterNd=1019 cm3, in the baseNa=1017 cm3, and the collectorNd=1015 cm3. The transistoris operating at T=300K.
Because the charges on the plates of a parrallel-plate capacitor are of opposite sign, they attract each other. Hence, it would take positive work to increase the plate separation. What happens to the external work done in this process?
If we define the resolution of a Digital-to-Analog Conversion (DAC) device to be the reciprocal of its number of logic states in percentage, what will be the resolution of an 8-bits DAC device
Assume that all variables reside in the memory and they are addressable as offsets from $t0. The value of A resides at the offset of 0. Generate the MIPS code for the aforementioned program segment.
The electric field in a region of space is E= 4 ax V/m and the magnetic flux density is B= 5 az Wb/m2. At t= 0 a particle with mass 1 kg and charge 1 C is located at the origin traveling at a velocity of u0= 10 ay m/s.
Find the equation relating V1(t) and V2(t) for the cascaded RC network shown in figure.- obtain the transfer function for the system.
A 4157-V rms, 3-phase supply is applied to a balanced Y-connected three-phase load consisting of three identical impedances of 48 at angle 36.87 degrees . Taking the phase voltage Van as reference
Draw the per-phase impedance diagram of the power system and Draw the impedance diagram in per-unit system
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