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Give the properties and application of permanent magnetic materials.
Permanent magnetic materials:
Properties:
Applications: Permanent magnetic materials are used to make permanent that finds application in electric machines, relays and measuring instruments, loudspeakers and microwave devices.
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Based on Figure, using star-delta transformation, calculate the current flow and voltage drops at 6kΩ resistor.
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A 3-phase, 16-pole synchronous machine is driven by a prime mover at a speed of 600-rpm with the stator open circuited. The rotor flux per pole is 0.025-Wb. Determine (a) the fr
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