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A concentric cable has a core diameter of 10 mm. The inductance of the cable is 4 *E-7 H/m. Ignoring inductance due to internal linkages, determine the diameter of the sheath. Assume that the relative permeability is 1.
A dc motor has an armature resistance of 0.2Ω and an armature inductance of 5 mH. It is driven by a power converter of gain, kPWM = 100 . Design a controller for the armature current loop such that the crossover frequency is 2 kHz and the steady st..
There is a circuit with a 12V DC battery,500mH inductor, a 45 ohm resistor, and a switch all inseries. Suppose the switch has been closed for a very longtime when a wire is connected over just the battery.
Cradle to death is a typical lifecycle for any given application. The useful life of a particular application will vary based on advancements in a given discipline. It is critical to continuously seek and identify new ways to adapt technology.
The amplifier has Rsig = RL = 1K, Rc = 1K, Rb = 47K, Beta = 100, Cu = 0.8 pF, and Ft = 600MHz. Assume the coupling capacitors to be very large. A.) find the DC collector current of the transistor. B.) find gm and Rpi
A buck converter has an input of 6 V and an output of 1.5 V. The load resistor is 3 , the switching frequency is 400 kHz, L 5 H, and C 10 F. (a) Determine the duty ratio. (b) Determine the average, peak, and rms inductor currents.
a lightning bolt carrying 20000 A lasts for 20 microseconds. if the lightning strikes a tractor, determine the charge on the tractor if the tires are assumed to be perfect insulators.
Sketch the four band diagrams across all MOS structures in equilibrium (VG = 0 V) and sketch the four band diagrams exactly at threshold (VG = VT), as the surface is inverted. Is the threshold voltage VT >0 or
Characteristics of a filter, A filter has the following characteristics: Attenuation = 3.0 dB from 0 Hz to 2 kHz. From 2 kHz to 20 kHz attenuation increases from 3 dB to 23 dB in a straight line when plotted on axes of power in decibels (vertical a..
A 1 A diode can deliver 1 A up to 75ºC with a derating factor of 8.5 mA/ ºC (this means that the current must be reduced by 8.5 mA for each degree above 75ºC). How much current can be drawn at 110 ºC
An x-y plane separates two materials. Material 1 covers z 0 region. There is no surface current or charge on the boundary between the two materials.
The battery is made by connecting 5 unit cells in series and then by connecting 7 of these series cells in parallel. Each unit cell has the voltage of 1.25 V and the internal resistance if 3.4 Ohm.
How much resistance is required to limit the current to 3 mAif the potential drop across the resistor is 12V
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