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Early scientific researchers hypothesized that electricity was an invisible fluid that could move through certain substances. Those substances "porous" to this "fluid" were called conductors, while substances impervious to this "fluid" were called insulators .
We now know what electricity is composed of: tiny bits of matter, smaller than atoms. What name do we give these tiny bits of matter? How do these particles of matter relate to whole atoms ?
In terms of these tiny particles, what is the difference between the atoms of conductive substances versus the atoms of insulating substances ? the atoms of insulating substances?
What are the two possible frequencies to which the local oscillator could be set? What bandwidth should the 10.7 MHz IF amplifier have?
It is operating at 50% of its rated load at a power factor of .5 leading, compute efficiency using both exact and approximate equivalent circuits as referred to the primary side. Tabulate the percent errors in the currents, voltages, powers
Using nodal analysis solve for the current and supemode used to solve this circuit is located between which two nodes?
A piston-cylinder assembly contains 2 kg of water vapor initially at 1 MPa and 250 oC. The water vapor is cooled at constant pressure until the water reaches a quality of 50%. a. Show the process on P-v and T-v diagrams with respect to the sa..
Point charges of 5nC and -2nC are located at (2,0,4) and (-3,0,5), respectively. A. Determine the electric field at all points in space. B. Determine the force on a 1nC point charge located at (1,-3,7).
If the distance between two slits is .0500 mm and the distance to the screen is 2.50 m, find the spacing between the first and third order bright fringes for light of wavelength 700 nm.
Describe in you own words how a modem works and what steps the data goes through to be sent from one terminal to another via modem.
A circuit consists of a current source, i=0.030 sin 500t, in parallel with L=20mH, C=50 micro Farads and R=25 Ohms. a. Determine the voltage V across the circuit. b. Solve for the power factor of the circuit.
Fourier transform X(w)=Xreal(w)+j(Xi(w)). Determine and represent the signal y(w) that gives the fourier transform of Y(w)=Xi(w)+Xreal(w)e^exp(j2w).
A 600V, dc shunt motor has an armature and field resistance of 1.5 ohm and 600 ohm, respectively. When the motor runs unloaded, the line current is 3A, and the speed is 1000 rpm.
Determine the phase relation between V o and i g for the given network if V g = 45sin(317t) and determine v o for the given network
A 115/28 V transformer has 56 turns on its low voltage side. How many turns does it have on its high voltage side what is its turns ratio when it is used as a step-down transformer
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