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A message signal m(t) is normalized to peak voltages of +- 1V. The average power equals 20mW. To transmit this signal by binary PCM without compression, uniform quantization is adopted. If the SQNR is required to be atleast 43dB, determine the minimum number of bits required to encode the uniform quantizer. Determine the SNR obtained with this quantizer.
A square wave signal with voltage levels 0 volts and 2.0 volt at a frequency of 1.00 MHz is multiplied by a sine wave at a frequency of 5.0 MHz
A 22KVA, 2300/230 VAC, 60HZ transformer is tested with a short circuit test. The measured data are as follows: Psc=280W, Vsc=80VAC and Isc=9.5 A 1. Find the transformer turns ratio of the transformer
What focal length should a pair of contact lenses have if they are to correct the vision of a person with a near point of 57.3 cm Assume that the near point distance is 25 cm.
A temperature sensor has a static transfer function of 0.15 mV/C° and a time constant of 3.3 s. If a step change of 22° to 50° C is applied at t=0, find the output voltage at 0.5 s from t=0s to t=10s
A starship of mass (2.0?106 kg) uses its tractor beam to pull a shuttlecraft (2.0?104 kg) aboard from a distance of 10 km away. The tractor beam exerts a constant force of 4.0104 N on the shuttlecraft. Both spacecraft are initially at rest.
Find the value of i1 in the circuit, using mesh-current analysis. Find the the value of i2 in the circuit, using mesh-current analysis. Find the power delivered by the source in the circuit, using mesh-current analysis.
In a steam plant where you work, the turbine develops 1000 kW. The heat supplied to the steam in the boiler is 2800 kJ/kg and the heat rejected by the steam to the cooling water in the condenser is 2100 kJ/kg.
If the per-phase line loss in a 60-km-long transmission line is not to exceed 60kW while it is delivering 100A per phase, compute the required conductor diameter, if the resistivity of the conductor material is 1.72*10^-8 Ohm-meters.
We want to sample the 2-D continuous signal f(x,y)=exp{-\(pi(x^{2}+y^{2})\)} by means of a rectangular sampling scheme to obtain 1.5 samples per millimeter. Determine the PSF h(x,y) of an ideal low pass anti aliasing filter
The air conditioner in a house or a car has a cooler that brings atmospheric air from 30 degree c to 10 degree c both states at 101 kPa. if the flow rate is 0.5 kg/s find the rate of heat transfer.
A pair of synchronous machines, on the same shaft, may be used to generate power at 60 Hz from the given source of power at 50 Hz. Determine the minimum number of poles that the individual machines
Consider 4 point charges of 10nC each located at A(1,0,0), B(-1,0,0), C(0,1,0) and D (0,-1,0) in free space. Find the total force F(not field) on the charge A.
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