AC Indicating Instruments Piyadanai Pachanapan 303251 Electrical Instruments

������ AC Indicating Instruments Piyadanai Pachanapan, 303251 Electrical Instruments & Measurement, NU

�������� DC Signal AC Signal

Right Hand Rule’s Fleming Induce EMF [Volt] B – magnetic flux density, tesla ����� l – conductor length in the field, meters v – relative velocity between field and conductor, m/s

��������� 1 �� )Instantaneous 1 phase Voltage Generation)

��� ��� v 0 1 2 0 o 30 o 60 o 0 V 0. 5 V 0. 866 V 7 8 9 210 o 240 o 270 o -0. 5 V -0. 866 V - 1. 0 V 3 4 5 6 90 o 120 o 150 o 180 o 1. 0 V 0. 866 V 0. 5 V 0 10 11 12 300 o 330 o 360 o -0. 866 V -0. 5 V 0 V

��������� 3 �� )Instantaneous 3 phase Voltage Generation) ����� 3 ������� 120 o