Titlebook: Study Notes in Electrical Science; Noel M. Morris Textbook 1977Latest edition Noel M. Morris 1977 base.electromagnetic.electromagnetism.el

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Alternating-current Theory,An alternating signal (which can be either a voltage or a current) periodically reverses its direction, having positive polarity during one part of its cycle and negative polarity in the remainder.

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Single-phase A.C. Circuits,The quantities used in this chapter (that is, ., etc.) are r.m.s. quantities.

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Three-phase A.C. Circuits,In this chapter it is assumed that the supply system has a symmetrical set of three-phase voltages, which have equal values of phase voltage, and that the three phasors are displaced from one another by 120°.

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Transformers,The r.m.s. values of the e.m.f.s . and . induced in the primary and secondary windings respectively are, with a sinusoidal supply.where . = supply frequency (Hz), . and . = respective number of turns on the primary and secondary windings, and . = maximum value of the magnetic flux (Wb) in the core (the flux waveform is assumed to be sinusoidal).

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Measurements,An analog instrument indicates the value of the quantity being measured by means of a pointer, whose indication varies smoothly with the measured quantity.

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Günter Stangl,Carine Bruyninxf opening the BBB with ultrasound and microbubbles. Moreover, possible interactions of this novel delivery method with brain disease as well as safety aspects of BBB disruption with ultrasound and microbubbles will be addressed.