Questão de Tecnologia da Informação

A - Rendimento (%)B - Fator potência0 10 20 30 40 50 60 70 80 90 100 110 120 130 Potência fornecida em relação à nominal (%) ŝƐƉŽŶşǀĞůĞŵ͗фŚƩƉ͗ͬͬĞĐĂƚĂůŽŐ͘ǁĞŐ͘ŶĞƚх͘ĐĞƐƐŽĞŵ͗ϮϳĂŐŽ͘ϮϬϭϰ;ĂĚĂƉƚĂĚŽͿ͘ ŽŶƐŝĚĞƌĂŶĚŽƋƵĞŽŵŽƚŽƌŽƉĞƌĂĂϮϮϬsĞϲϬ,nj͕ĂǀĂůŝĞĂƐĂĮƌŵĂĕƁĞƐĂƐĞŐƵŝƌ͘ /͘ ĚŝŵŝŶƵŝĕĆŽĚĂƉŽƚġŶĐŝĂĨŽƌŶĞĐŝĚĂƉĞůŽŵŽƚŽƌăĐĂƌŐĂŝŵƉůŝĐ ĂĚŝŵŝŶƵŝĕĆŽĚĞƐƵĂĐŽƌƌĞŶƚĞĞůĠƚƌŝĐĂ͕ ĚŝŵŝŶƵŝŶĚŽƐĞƵĂƋƵĞĐŝŵĞŶƚŽĞƌĞĚƵnjŝŶĚŽƐĞƵƌĞŶĚŝŵĞŶƚŽ͘ //͘ YƵĂŶĚŽŽŵŽƚŽƌŽƉĞƌĂĐŽŵϭϬϬйĚĞĐĂƌƌĞŐĂŵĞŶƚŽ͕ĂĐŽƌƌĞŶƚĞĞ ůĠƚƌŝĐĂĂƐƐƵŵĞǀĂůŽƌĞƐŵƵŝƚŽĂůƚŽƐ͕ ĂĐŝŵĂĚĂĐŽƌƌĞŶƚĞŶŽŵŝŶĂů͘ ///͘ K ŵŽƚŽƌ ĚĞǀĞ ƐĞƌ ĞƐƉĞĐŝĮĐĂĚŽ ƉĂƌĂ ƚĞƌ ƉŽƚġŶĐŝĂ ŶŽŵŝŶĂů Ž ŵĂŝƐ ƉƌſdžŝŵŽ ƉŽƐƐşǀĞů ĚĂ ƉŽƚġŶĐŝĂ ĚĞŵĂŶĚĂĚĂƉĞůĂĐĂƌŐĂ͕ĚĞŵĂŶĞŝƌĂĂŽƉĞƌĂƌŶĂƐĨĂŝdžĂƐŵĂŝƐĂůƚĂƐ ĚĞƌĞŶĚŝŵĞŶƚŽĞĨĂƚŽƌĚĞƉŽƚġŶĐŝĂ͕ ĂƉƌĞƐĞŶƚĂŶĚŽŵĂŝŽƌĞĮĐŝġŶĐŝĂĞŶĞƌŐĠƟĐĂ͘ /s͘ ƐƐĞŵŽƚŽƌŶĆŽƉŽĚĞŽƉĞƌĂƌĂǀĂnjŝŽ͕ƐĞŵĨŽƌŶĞĐĞƌƉŽƚġŶĐŝĂă ĐĂƌŐĂ͕ǀŝƐƚŽƋƵĞŽĞƐĐŽƌƌĞŐĂŵĞŶƚŽƐĞƌŝĂ ŶƵůŽ͕ŽƋƵĞŝŵƉůŝĐĂƌŝĂǀĞůŽĐŝĚĂĚĞĂŶŐƵůĂƌ;ƌŽƚĂĕĆŽͿĚŽŵŽƚŽƌƚĞ ŶĚĞŶĚŽĂŝŶĮŶŝƚŽ͘ V. KŵŽƚŽƌĂƉƌĞƐĞŶƚĂĐŽƌƌĞŶƚĞĚĞƉĂƌƟĚĂĚĞĂƉƌŽdžŝŵĂĚĂŵĞŶƚĞϰϱ͕ƋƵĞĂƵŵĞŶƚĂĂƚĠĂƉƌŽdžŝŵĂĚĂŵĞŶƚĞ ϭϮϬƋƵĂŶĚŽŽŵŽƚŽƌĞŶƚƌĂĞŵƌĞŐŝŵĞĚĞŽƉĞƌĂĕĆŽŶŽŵŝŶĂů͘ ĐŽƌƌĞƚŽĂƉĞŶĂƐŽƋƵĞƐĞĂĮƌŵĂĞŵ A /Ğ//͘ B /Ğ///͘ C //Ğ/s͘ D ///Ğs͘ E /sĞs͘ ϯϳ E'E,Z/>ffidZ/ QUESTÃO 35 - Eletrônica EŽƐ ƐŝƐƚĞŵĂƐ ĐŽŵ ŵŝĐƌŽƉƌŽĐĞƐƐĂĚŽƌ͕ Ž ƉƵůƐŽ ĚĞ ŝŶŝĐŝĂůŝnjĂĕĆŽ reset Ġ ƵƐĂĚŽ ƉĂƌĂ ĐŽůŽĐĂƌ Ă hW ;hŶŝĚĂĚĞ ĞŶƚƌĂůĚĞWƌŽĐĞƐƐĂŵĞŶƚŽͿĞŵƵŵĞƐƚĂĚŽĐŽŶŚĞĐŝĚŽ͘ƐƐĞƉƵůƐŽƉƌ ĞĐŝƐĂƐĞƌŐĞƌĂĚŽĂƵƚŽŵĂƟĐĂŵĞŶƚĞŶŽĂƚŽ ĚĂĞŶĞƌŐŝnjĂĕĆŽĚŽƐŝƐƚĞŵĂĞĚĞǀĞƐĞƌŽŵĂŝƐĐƵƌƚŽƉŽƐƐşǀĞů͕ĚĞƐ ĚĞƋƵĞŶĆŽĮƋƵĞĂƋƵĠŵĚĂĞƐƉĞĐŝĮĐĂĕĆŽĚĂ hW͘ ĮŐƵƌĂĂďĂŝdžŽĂƉƌĞƐĞŶƚĂƵŵĞƐƋƵĞŵĂơƉŝĐŽƉĂƌĂĂƚĞŶĚĞƌĂĞƐƐĂƐŶĞĐĞƐƐŝĚĂĚĞƐ͘K resetĚĞǀĞƐĞƌĂƟǀĂĚŽ ĞŵŶşǀĞůĂůƚŽ;ůſŐŝĐŽϭͿĚƵƌĂŶƚĞƵŵŝŶƚĞƌǀĂůŽŶĆŽŝŶĨĞƌŝŽƌĂϭϬϬƉĞƌşŽĚŽƐĚĞƌĞůſŐŝŽ͕ŐĞƌĂĚŽĂƉĂƌƟƌĚĞƵŵ ŽƐĐŝůĂĚŽƌĂĐƌŝƐƚĂů͘ĞƐƉĞĐŝĮĐĂĕĆŽĚĂhWŝŶĚŝĐĂŶşǀĞůŵşŶŝŵŽĚĞƚĞŶƐĆŽĚĞresetŝŐƵĂůĂϱϬйĚĂƚĞŶƐĆŽĚĞ ĂůŝŵĞŶƚĂĕĆŽĚŽƐŝƐƚĞŵĂ͘ + 5 V Diodo R C UCP Reset Oscilador 1 MHz ŽŶƐŝĚĞƌĂŶĚŽƋƵĞŽĐĂƉĂĐŝƚŽƌĠĚĞϭђ&ĞƋƵlnϬ͕ϱс 1Ϭ͕ϲϵ͕ŽǀĂůŽƌŵşŶŝŵŽĚŽƌĞƐŝƐƚŽƌZĚĞǀĞƐĞƌ ĚĞĂƉƌŽdžŝŵĂĚĂŵĞŶƚĞ A 77 Ÿ. B 145 Ÿ. C 190 Ÿ. D 770 Ÿ. E 1 450 Ÿ. ϯϴ E'E,Z/>ffidZ/ QUESTÃO 35 - Controle e Automação K ĞƐƚƵĚŽ ĚĞ ƐŝƐƚĞŵĂƐ ůŝŶĞĂƌĞƐ Ġ ŝŵƉŽƌƚĂŶƚĞ Ğŵ ĞŶŐĞŶŚĂƌŝĂƉĞůŽĨĂƚŽĚĞƋƵĞďŽĂƉĂƌƚĞĚŽƐĨĞŶƀŵĞŶŽƐ İƐŝĐŽƐ ƉŽĚĞ ƐĞƌ ĂƉƌŽdžŝŵĂĚĂŵĞŶƚĞ ĚĞƐĐƌŝƚĂ ƉŽƌ ĐŽŵƉŽƌƚĂŵĞŶƚŽƐ ůŝŶĞĂƌĞƐ͕ ĂŽ ŵĞŶŽƐ Ğŵ ƚŽƌŶŽ ĚŽƐ ƉŽŶƚŽƐ ĚĞ ŽƉĞƌĂĕĆŽ͘ WŽƌ ŽƵƚƌŽ ůĂĚŽ͕ Ă ƚĞŽƌŝĂ ĚĞ ƐŝƐƚĞŵĂƐůŝŶĞĂƌĞƐĠŵƵŝƚŽƷƟůƚĂŵďĠŵŶŽĞƐƚƵĚŽĚŽ ĐŽŵƉŽƌƚĂŵĞŶƚŽůŽĐĂůĚĞƐŝƐƚĞŵĂƐŶĆŽͲůŝŶĞĂƌĞƐ͘ ŝŵƉŽƌƚĂŶƚĞ ƐĂůŝĞŶƚĂƌ ƋƵĞ ŽƐ ƐŝƐƚĞŵĂƐ İƐŝĐŽƐ ƉŽĚĞŵ ƐĞƌ ƌĞƉƌĞƐĞŶƚĂĚŽƐ ƉŽƌ ĞƋƵĂĕƁĞƐ ĂůŐĠďƌŝĐĂƐ Ğ ĞƋƵĂĕƁĞƐ ĚŝĨĞƌĞŶĐŝĂŝƐ͕ ůŝŶĞĂƌĞƐ Ğ ŶĆŽͲůŝŶĞĂƌĞƐ͕ Ğ ŽĞƐƚƵĚŽĚĞƚĂŝƐƐŝƐƚĞŵĂƐĞŶǀŽůǀĞĂŵŽĚĞůĂŐĞŵĞĂ ƐŽůƵĕĆŽĚĞƐƐĂƐĞƋƵĂĕƁĞƐ͘ EŽ ĐĂƐŽ ĞƐƉĞĐşĮĐŽ ĚĂ ĞƋƵĂĕĆŽ ĂďĂŝdžŽ͕ ƉĂƌĂ ƵŵĂ ĞŶƚƌĂĚĂx(t)͕ y(t)ĠĂƐĂşĚĂĚĞƵŵƐŝƐƚĞŵĂĚĂĚĂƉŽƌ y(t) = (x(t))a+bx(t)+c. WĂƌĂ ĂůŐƵŵĂƐ ĐŽŵďŝŶĂĕƁĞƐ ĚŽƐ ǀĂůŽƌĞƐ ĚĂƐ ĐŽŶƐƚĂŶƚĞƐa͕ b e c͕ŽƐŝƐƚĞŵĂƉŽĚĞƌĄƐĞƌůŝŶĞĂƌŽƵ ŶĆŽͲůŝŶĞĂƌ͘KƐŝƐƚĞŵĂƌ ĞƐƵůƚĂŶƚĞƐĞƌĄůŝŶĞĂƌƋƵĂŶĚŽ A a = 0, b = 1, c = 0. B a = 1, b = 1, c = 0. C a = 1, b = 0, c = 1. D a = 2, b = 0, c = 1. E a = 2, b = 0, c = 0.

Telecomunicações hŵ ĚĞƚĞƌŵŝŶĂĚŽ ƐŝŶĂů ĚĞ ĄƵĚŝŽ͕ ĐŽŵ ĚĞŶƐŝĚĂĚĞ ĞƐƉĞĐƚƌĂůĚĞƉŽƚġŶĐŝĂĂƉƌĞƐĞŶƚĂĚĂŶŽŐƌĄĮĐŽĂďĂŝdžŽ͕ ĚĞǀĞ ƐĞƌ ŐƌĂǀĂĚŽ Ğŵ ;ŽŵƉĂĐƚ ŝƐĐͿ ƵƟůŝnjĂŶĚŽ Ƶŵ ĐŽŶǀĞƌƐŽƌ ĂŶĂůſŐŝĐŽͲĚŝŐŝƚĂů ;ͬͿ ĐŽŵ ϭ 024 ŶşǀĞŝƐ͘ EĂ ƐĂşĚĂ ĚŽ ĐŽŶǀĞƌƐŽƌ͕ ĂŽƐ bits ĐŽĚŝĮĐĂĚŽƐ ƐĞƌĆŽ ĂĚŝĐŝŽŶĂĚŽƐ bits ƉĂƌĂ ĐŽƌƌĞĕĆŽ ĚĞ ĞƌƌŽƐ͕ bits ĚĞ ƐŝŶĐƌŽŶŝƐŵŽ Ğ bits ĚĞ ĐŽŶƚƌŽůĞ͘ ƐƐĞƐ bits ĂĚŝĐŝŽŶĂŝƐ ƌĞƉƌĞƐĞŶƚĂŵ ƵŵĂ ƐŽďƌĞĐĂƌŐĂ ĚĞ ϮϬϬй͕ ŝƐƚŽĠ͕ƉĂƌĂĐĂĚĂ bitŐĞƌĂĚŽŶŽĐŽŶǀĞƌƐŽƌ͕ͬϮ bits ĚĞƐŽďƌĞĐĂƌŐĂƐĆŽĂĚŝĐŝŽŶĂĚŽƐ͘

22,05 f(kHz) 0 WĂƌĂĞƐƐĂƐŝƚƵĂĕĆŽ͕ĂƚĂdžĂĚŽƐŝƐƚĞŵĂĚĞŐƌĂǀĂĕĆŽĚŽ ƐŝŶĂůĚĞĄƵĚŝŽŶŽ͕ĞŵŬďŝƚͬƐ͕ĚĞǀĞƐĞƌŝŐƵĂůĂ