UNMDP Facultad de Ingeniería Departamento de Ingeniería Eléctrica Cátedra: Mediciones Eléctricas I Respuestas de la Guía Nº 1: ERRORES INSTRUMENTALES - 1º PARTE ______________________________________________________________________ 1.a. αmed = 63 divisiones b. Einst(I) = ±0.15[mA] c. Elect(I) = ±0.02[mA] d. Etotal(I) = ±0.17[mA] e. I = (12.60 ± 0.17)[mA] = (1260 ± 17). 10−2 [mA] ______________________________________________________________________ A 2.a. Ce = 0.1 [div] b. Vm = 4.5[A] c. e%(I) = 0.67% (sin considerar el error de lectura) d. αmed = 10.1 div ⟹ I = (1.01 ± 0.03)[A] = (101 ± 3 ). 10−2 [A] αmed = 35 div ⟹ I = (3.50 ± 0.03)[A] = (350 ± 3 ). 10−2 [A] αmed = 45 div ⟹ I = (4.50 ± 0.03)[A] = (450 ± 3 ). 10−2 [A] αmed = 58.3 div ⟹ I = (5.83 ± 0.03)[A] = (583 ± 3 ). 10−2 [A] e. αmed = 10.1 div ⟹ e%(I) = 2.97% αmed = 35 div ⟹ e%(I) = 0.86% αmed = 45 div ⟹ e%(I) = 0.67% αmed = 58.3 div ⟹ e%(I) = 0.51% ______________________________________________________________________ 3.a. e%(1) = 1.8% e%(2) = 3.0% b. Vmed = 41.7[V] ______________________________________________________________________ Respuestas de la Guía Nº 1: ERRORES INSTRUMENTALES - 1º PARTE 1 UNMDP Facultad de Ingeniería Departamento de Ingeniería Eléctrica 4. e%(1/4) = 8% e%(3/4) = 2.67% Cátedra: Mediciones Eléctricas I e%(1/2) = 4% e%(1/8) = 16% ______________________________________________________________________ 5. Imed = 6.4[A] Einst(I) = ±0.2[A] Elect(I) = ±0.04[A] ______________________________________________________________________ 6.a. Tensión. b. 500[V] c. 400[V] d. Instrumento de hierro móvil. e. 10[V/div] f. Posición vertical g. Einst(U) = 7.5[V] h. Elect(U) = 2[V] ______________________________________________________________________ 7.a. Einst(U) = ±0.079[V] b. Eres(U) = ±0.001[V] c. Etotal(U) = ±0.080[V] d. U = (15.69 ± 0.08)[V] = (1569 ± 8). 10−2 [V] e. Uind = 5.540[V] f. Einst(U) = ±0.0287[V] ______________________________________________________________________ 8.a. Einst(I) = ±0.07[A] b. Eres(I) = ±0.01[A] c. Einst(I) = ±0.04[A] Respuestas de la Guía Nº 1: ERRORES INSTRUMENTALES - 1º PARTE 2