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Consider the parallel form flow graph shown in Figure P6.48
(a) Assume that the system is implemented with two's-complement fixed-point arithmetic, and that all products (multiplications by 1 do not introduce noise) are immediately rounded (before any additions are done). Insert round-off noise sources at appropriate locations in the flow graph to model the rounding error. Indicate the size (average power) of each noise source in terms of σ2B, the average power of one (B + 1)-bit rounding operation.
(b) If the products are rounded as described in part (a), the output can be represented as yˆ[n] = y[n] + f [n] where y[n] is the output owing to x[n] acting alone, and f [n] is the total output due to all the noise sources acting independently. Determine the power density spectrum of the output noise
The voltage and current in the Laplace domain for a certain system is given by V (s) = 1/12 1/s^2 +3, I(s) = s/s^2+3. Is this system best described as resistive, capacitive, or inductive?
A shunt motor has the following ratings: 75 kW, 240 V, 1750 rpm, 300 A. The motor is supplied with 240 V source (constant) at its armature terminals. Its armature resistance is 0.0144 [O]. At rated current Ia = 300 A, the motor runs at rated speed..
R- 1k ohm; L=1nH for the circuit represented in Fig. 8.1, and with the knowledge that i(0) = -3mA: a) Write an expression for i(t) valid for all t>=0 b) Compute i(t) at t=0, t=1ps, 2ps, and 5ps
If the circuit is driving a100Ω load with a signal generator that has an output impedance of50Ω and an open-circuit output voltage of0.5sin(500t+30o),determine the steady state output voltage.
A robot arm must be able to extend 24 in. horizontally in 2 s while carrying a load of 10 lb. How much force is required, assuming the arm is accelerating all the way
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A single silicon photovoltaic cell is found to have an open-circuit voltage of 0.6 V and a short-circuit current of 15 mA in full sunlight. Show how a collection of these cells can be arranged to deliver 500mW at 9.0V into a load.
An autotransformer with a total of 600 turns has its secondary windings embracing 200 turns. The 600 turns are connected to a 60-Hz, 2400-V driving voltage. A load connected to the secondary draws 4.8-kVA at 0.6 power factor lagging.
A power station has two 60 MW units each running for 7000hours a year and one 30MW unit running for 1500 hours a year. The energy produce is 700 x106 Kwh per year,Calculate; 1 plant load factor 2 plant use factor
Design a combinational circuit that multiplies by 5 an input decimal digit represented in BCD.The output is also in BCD. Show that the outputs can be obtained from the input lines without usingany logic gates?
What is the common-mode rejection ratio (in dB) if the output voltage is measured to be 2.0 Vp-p when the input terminals are connected together and a 0.1 Vp-p voltage is applied between the inputs and ground.
Describe the charge diffusion and drift in a PN junction, without and then with an applied voltage
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