Cho chỉnh lưu tia 2 pha có điều khiển, nguồn 220V xoay chiều, 50H. Vẽ đồ thị điện
áp nguồn, dòng điện qua van T1, điện áp ngược rơi trên van T1, xung điều khiển và
điện áp, dòng điện chạy qua tải với các góc điều khiển
=
300
, 450
trong các trường
hợp sau:
a. Tải R = 5
b. Tải R = 2
, L = 0.01H. Nhận xét chế độ dòng điện ứng với các góc điều khiển
khác nhau
Answers: 3
Physics, 22.06.2019 02:30, jendun123ovrxij
The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
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Cho chỉnh lưu tia 2 pha có điều khiển, nguồn 220V xoay chiều, 50H. Vẽ đồ thị điện
áp nguồn, dòng đi...
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