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Running at 1200 rpm from a 280-V source, a series-connected dc motor draws an armature current of 25 A. The field resistance is 0.2Ω, and the armature resistance is 0.3 Ω. Assuming that the flux is proportional to the field current, determine the speed at which the armature current is 10A.
3) What is the RMS voltage of the source in a single loop series circuit if Irms = 1A-30° and Ztotal = 100 65° 4) What is the power dissipated by an electric heater with a resistance of 20? drawing a current waveform of i(t) = 10 sin(60t) Amps
Consider the impurity diffusion of gallium into a silicon wafer. If gallium is diffused into a silicon wafer (with no previous gallium in it) at a temperature of 1100oC for 3h, what is the depth below the surface
Determine (a)secondary voltage; (b)secondary current; (c)primary current; (d)input impedance at primary terminals of transformer; (e)active, reactive, and apparent power input to transformer.
Two semiconductor materials have exactly the same properties except that material A gives photoluminescence at 1240nm and material B at 1033nm. Determine the ratio of ni for material A to that of material B for T=300K.
If non-ideal interface trap density of Dit = 5x1010/cm2/eV is to be considered, what is the shift in the flat band voltage. Assuming all interface traps are acceptor-like (negatively charged if filled with an electron and neutral if empty)
An AM broadcast receiver's pre-selector has a total effective Q of 90 to a received signal at 1180 kHz and uses an IF of 455 kHz. Calculate the image frequency and its dB of suppression.
A radio receiver has a noise power N = kTB watts, with T = 100 K and B = 1.0 MHz. The value of k is 1.38 x 10^-23 J/K. What is the noise power in dBW?
Design a combinational logic that determines if a correction factor of 0110 should be added to the initial sum of the BCD digits will rate high.
A force of 5 N is applied to a cylinder, as shown in Figure. What are the magnitude and direction of the torque produced on the cylinder? What is the angular acceleration a of the cylinder?
Write a program that can solve a linear equation ay + b = c. How can i use scanf to read only a,b and c?
a new type of battery delivers 10W of power for 8hr without voltageor current fluctuation. after 8 hr without voltage or current fluctuation. After 8 hr however the power output drops linearly from10 W to 0 in only 5 min.
In a processing plant, jars on a conveyer belt are cleaned out with a high-pressure air jet just prior to being filled (Figure Below). When a jar approaches the cleaning station, it activates a switch (with both NO and NC contacts).
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