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A typical50,000 watt AM broadcast transmitter will generally have severallow power audio amplifier stages, a high power (~25,000 watt) audiooutput stage to generate the audio power that modulates the RFcarrier, low power RF stages to generate the carrier signal, and avery high power RF amplifier to generate the unmodulated RFcarrier. Discuss the applicability of various amplifierclasses to two or more of these applications. Why might oneclass of amplifier or the other be the best choice for each circuit?
Find the charge q as a function of time for the electrical circuit described. Assume that q(0) = 0 and q'(0) = 0 R = 20, C = 0.02, L = 2, E(t)=35 q"+R/L q'+1/LC q=1/L E(t) where R is resistance (in Ohms), C is capacitance (in Farads)
Find the attenuation constant alpha, the phase constant beta, and the phase velocity u if the conductivity of the material sigma=(omega)(epsilon), the material parameters are Ur=1, epsilon r =2.5, and the wavelength in free space is lamda naught =..
A studen wants to constrcut a 1 F capacitor out of two squareplates for a science fair project. He palns to use a paperdielectric (εr= 2.5) that is 8x10-5 m thick. Thescience fair is to be held in Astrodonem. Will his capacitor fit inthe Astrodome
The program is to input the number character-by-character and then assemble them together so that the original number is put into a floating point variable and displayed back to the monitor.
An inspector selects an item for inspection according to the outcome of a coin flip: the item is inspected if the outcome is head. Suppose that the time between item arrivals is an exponential random variable with mean one.
A 100V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.25 ohm. The motor runs at a speed of 600 rev/min when the shaft torque is 27.14 Nm. Friction and windage losses at this speed are 300W.
Specify how many bits are needed to appropriately digitize each of the following signals. Choose from: 6 bits, 8 bits, 10 bits, 12 bits, 14 bits, or 16 bits. a. A signal where the maximum amplitude is 1 volt and the rms noise is 1.5 millivolts.
why do you have to compute the equivalent resistance of the 6 ohm and 20 ohm. doesnt the current splitfrom the 6 ohm to the 30 ohm and then from the 30 ohm to the 20ohm.
The power is generated by a DC power facility at a voltage of 10 V and deliver by two power lines with resistance Rline=3 ohm. The maximum power the voltage source can deliver is 5 W. a) Find the total power delivered by this DC voltage source
A) A capacitor has a plate area of 10 in^2, a plate separation of .1 mm and a teflon dielectric. Determine the capacitance of this capacitor. B) A 10 μF capacitor has 12 V applied. What is the separated charge stored on the plates
An 8-bit shift register is used to convert a serial input to a parallel output. If a byte is received every 64 micro-second(us), what is the clock for the register
Two three-phase loads are y-connected across a 300 Volt three phase line. One load draws 10kW at a p.f. of 0.9 leading, and the second load draws 8kW at a p.f. of 0.6 lagging. V(line-neutral)=300V/sqrt(3)=173.21V
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