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The armature of a four-pole dcmachine has a simplex lap wound commutator winding (which has the number of parallel paths equal to the number of poles) with 120 two-turn coils. If the flux per pole is 0.02 Wb, calculate the dc voltage appearing across the brushes located on the quadrature axis when the machine is running at 1800 r/min.
Impurities in Semiconductors Can be added in accurately controlled amounts. Can modify the electronic and optical properties. Used to change conductivity over wide ra
I have to make assignment of about the topic Magnetism and magnetic materials. I don''t know how I will prepare this assignment. Please give me some instructions about this.
What makes them sine? Ans) Fourier tells that only a sine wave has no harmonic content. The math works out that if you have any wave shape other than a sign wave, you can brea
Q. An integrator as shown in Figure is to be designed to solve dy(t) / dt + 2000y (t) = 0 with y(0) = 5. If R i is chosen to be 10 k, find C f .
Q. What is Frequency Translation and Product Modulation? The basic operation needed to build modulators is the multiplication of two signals. Whenever sinusoids are multiplied,
Direct data addressing mode (with examples) available in microprocessors. Direct Mode: Instruction comprises memory access. CPU accesses which location into memo
Q. Explain Basic Control Systems? Electric energy is widely used in practice, because of the ease with which the system and device performance can be reliably controlled. One o
3-phase 120 0 Mode VSI In 1200 mode VSI each thyristor conducts for 1200. At a time only thyristor one form upper group and another form group will conduct. Only th
ELECTRO MAGNETISM: In this unit we learned about electromagnetism and the relationship that presents between and magnetic flux and electric current. The way in which electric
a rectangular surge of 2us duration and magnitude of 100Kv travels along a line of surge impedance 500 ohms. The latter is connected to another line of equal impedance through an i
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