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A beam of X-rays with a wavelength l of 0.15 nm is directed at a crystal whose planes have a spacing of 0.25 nm. How many diffraction peaks (each arising from a different order n) are possible?
The sampling frequency in a DSP system is fs=8 kHz. Anti-aliasing filter used in the system is the second-order Butterworth filter with cutoff frequency of fc=3.4 kHz. What is the percentage of aliasing level at the frequency f=2.5 kHz
The configuration is shown in Figure 6.5. Use six LEDs as shown in Table 6.1 to represent the outputs. The Time in This State can be met in several ways. One method is to use a debounced switch as input, another to input a 1 Hz clock.
a) Plot the spectrum and the normalized spectrum of x[nT] = 2cos(20*pi*n*T + pi/8) + 4cos(40*pi*n*T + pi/8) for T = 0.01 b) Plot the spectrum and the normalized spectrum of
A 4800 bps data transmission device has a bit error rate of 10-6 normally. During a test period, it works at normal conditions except that a 1000ms impulse saturates the channel and all data is lost. Calculate the average bit error rate within the..
An AM transmitter radiates 9 kW of power when the carrier is unmodulated and 10.125 kW when the carrier is sinusoidally modulated. Find the modulation index, percentage of modulation.
For loads causing more than 1 V to appear across the generator, the output current is no longer assured but will be reduced by some unknown amount. This circuit limitation, occurring, for example, at the peak of a sine wave signal
a. Calculate the optimum refractive index of a single layer thin film antireflection coating for the silicon air interface at this wavelength. b. Calculate the optimum thickness of the layer.
Calculate The Average voltage generated in 6 turn full pitch coil of a 25 cycle alternator if the flux per pole is 7.2 x 10^5 maxwells. What is the effective voltage if the waveform is sinusoidal.
Place the relay in the Collector circuit, the resistor in the Base circuit and the diode in parallel with the relay to provide a path for current due to energizing the relay.
Assume initially that no inputs have been seen and create a special initial state with output 0 to start the Moore machine. Draw a state graph for a Moore machine (minimum number of states is 5).
A generator (which may be represented by an emf in series with an inductive reactance) is rated 500MVA, 22kV. Its Y-connected windings have a reactance of 1.1 p.u. Find the ohmic value of the reactance of the windings.
two loads connected in parallel are supplied from a single phase 240v rms source. the two loads draw a total real power of 400 kw at a power factor of 0.8 lagging. one of the loads draws 120 kw at a power factor of 0.96 leading.
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