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What are hard magnetic materials?
Hard Magnetic materials- They have a slowly rising magnetization curve along with large hysteresis loop area and therefore large energy losses. These materials have high value of retentivity and low permeability and high value of coercivity. To saturate the hard magnetic materials, a high magnetizing force is needed. Hard magnetic materials have property of storing a significant amount of magnetic energy after magnetization and retaining similar for a long time. Because of this property they are used in the manufacture of permanent magnets.
An eight pole dc generator has an armature wound with 768 conductors each capable of carrying 50A without overheating. The emf generated in each conductor is 1.5V. Calculate the th
Why earthing is required for any electrical equipments, domestic installation and service building etc? For TL coaches what is the minimum I.R. value needed for new wiring? An
Armature Winding In this winding the working emf is induced by the working flux. The current which is dependent on the load called current. The windings that handle
why inductive load is use in electronics circuit?
You are required to implement below shift system in MATLAB, t0 is the amount of shift towards left or right. y(t)= x(t-t0) Implement MATLAB code, where shift should be taken as
speed control of single phase ac motors
1. Why must a modem be used to transmit binary data through a PSTN? (1) Use sketches and additional text to describe the following modulation methods. (a) Amplitude shift key
Q. Addition and integration can be combined by the summing integrator circuit shown in Figure. With the given component values and input waveforms, sketch v o when S is opened at
Damage of revolving metallic disc due to tampering
The per-phase synchronous reactance of a three-phase, wye-connected, 2.5-MVA, 6.6-kV, 60-Hz turboalternator is 10 . Neglect the armature resistance and saturation. Calculate the v
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