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An LVDT is used in an accelerometer to measure seismic-mass displacement. The LVDT and signal-conditioning output is 0.31mV/mm with +/-2cm maximum core displacement. The spring constant is 240N/m, and the core mass is 0.05kg.
1. Find the relation between acceleration in m/s^2 and output voltage.2. Find the maximum acceleration that can be measured and the natural frequency.
Compute the inverse Fourier transform for X(ω) = cos 4ω. 5. A signal with the highest frequency component at 10 kHz is to be sampled. To reconstruct the signal, the sampling must be done at a minimum frequency of?
Finding the periodicity in N of the discrete time signal x(n) = Cos(3pi*Ts.n + pi/4) and then plotting the discrete signal. From this the condition on the sampling period is determined
Eigenfunctions and LTI systems, The eigenfunction property is only valid for LTI systems. Consider the cases of nonlinear and of time varying systems.
Digitizing an Audio Signal, PAM, ADC, An audio signal has a bandwidth that extends from 100 Hz to 10 kHz. The signal is sampled to create a PAM signal and then digitized by an analog to digital converter (ADC) that has 8 bits.
If L=0.0053nH, C=15µF find the operating frequency of series LC circuit. What factors decides capacitance? Explain using diagram.
What sort of waveform does the input signal have? Is the input signal periodic or non-periodic? If the input waveform is non-periodic, what is its pulse width?
What is the channel capacity for a channel with a 300 Hz bandwidth and as S/N = 3? 2nd problem: Given a channel with a 50 kHz bandwidth and a S/N = 127, determine:
Rain affects the downlink from the satellite and the overall CNR ratio in the receiver falls by 6.0 dB to 13.0 dB. What is the bit error rate and the time between errors now?
Do either or both of the reasons you gave in part (a) above also apply to a point to point voice link using frequency modulation? c. Which parameter of an FM transmission determines whether it is wideband or narrow band?
What is the magnitude of the frequency component at 30 kHz? The square wave is passed through an ideal rectangular low pass filter that completely attenuates all frequencies higher than 35 kHz. Write down an equation for the spectrum at the output ..
Rate at which succesful packets arrive at network node, After traversing a wireless filled channel packets arrive at a networks node according to a Poisson process with rate Lambda
What is the maximum bandwidth of the low pass filters at the receiving end of the link? What bandwidth would you recommend for the LPFs?
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