Sumários
lecture class no. 18
21 novembro 2018, 08:00 • Gil Marques
Rotating fiels. Concepts of number of phases, number of pole pairs, speed of rotation, distribution and shortening.
Lab 5A
20 novembro 2018, 14:30 • Maria José Resende
Single phase Transformer; no-load test, short-circuit test and resistive load test.
lecture class no. 17
15 novembro 2018, 10:00 • Gil Marques
Voltage regulation. Autotransformers. Instrument transformers. Transformers in three-phase systems. Cooling transformers.
Lab 4B
14 novembro 2018, 10:30 • Maria José Resende
Magnetic circuit in DC and AC. Measurement of the magnetic field. Variation of air gap. Principle of operation of the transformer.