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The positive portion of the envelope of the output of an AM modulator is shown in Figure 3.70. The message signal is a waveform having zero DC value. Determine the modulation index, the carrier power, the efficiency, and the power in the sidebands
A receiver with a synchronous detector receives a barely intelligible message since the (s/n)d =4 db . it has been determined that the transmitter has ST= 100 W , μ = 0.9 and SX=0.5. What is the minimum value of ST if envelope detection were used.
An Electric Range top burner control adjusts the duty cycle of the current and voltage supplied to surface heating element as a function of the control's dial setting. The range controller operates from a 240 VRMS single phase supply
Write a function 'charges' that computes the total charge for a customer based on the GB of data the user uses per month. The function should also calculate the average cost per MByte of data (rounded to the nearest cent).
You are a large ISP that doesn't care about your subscribers' network performance. You decide to divide the user ( and the minimal networking equipment required) into 10 distinct group (subnet), each hosting up to 750,000 users.
However, the pump requires 60 W of parasitic power to operate continuously. Is installation of the pump justified. Explain. At what value of parasitic power does the addition of the pump become unjustified.
Consider a linear circuit with a single voltage source Vs = 1 V and 2000 resistors. The circuit has no other sources. The current through one of the resistors in this circuit is measured to be 5 mA. If the voltage source is changed from 1 V
Bit 4 of Port B is connected to a switch that normally outputs a zero. Monitor this switch to detect a change from zero to one. Immediately when it becomes one, call a function to toggle Bit 5 of Port B, which is connected to an LED.
A shunt DC motor has RA = 0.7-ohm and VT =429.6 V. For an output power of 50.4 hp, we have nm = 1,452 rpm and IA = 110.8 A. The field current remains constant for all parts of this problem. Find the rotational power loss in watts.
The pneumatic relay has the characteristic that pc=KPb, where K > 0. What kind of control action does this controller produce
A 10mH inductor and a 4.7mH inductor are connected in parallel and have the same mutual inductance between them. What is the total inductance of this circuit
Design an Aritmentic unit that meets the following specifications. Two 32-bit operands as inputs 2-bit command as input to specify four operations ADD, SUB, MUL, DIV
If a fault from one phase to earth occurs on the far end of the feeder, Calculate the magnitude of fault current. - Calculate line to neutral voltage at the generator terminal. -
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