Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 200 mA 300 mA 7.8 mA 208 mA None of these 200 mA 300 mA 7.8 mA 208 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Voltage is None of these The number of free electrons in an atom The smallest electrically charged particle Trie force that causes electrons to flow The flow of charged particles through a material None of these The number of free electrons in an atom The smallest electrically charged particle Trie force that causes electrons to flow The flow of charged particles through a material ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Silicon atoms combine into an orderly pattern called a Semiconductor Crystal Valence orbit None of these Covalent bond Semiconductor Crystal Valence orbit None of these Covalent bond ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitive reactance of a parallel capacitor circuit is: None of these equal to the sum of the individual capacitance values less than the capacitance value of the smallest capacitor equal to the sum of the individual capacitive-reactance values equal to the source voltage divided by total current None of these equal to the sum of the individual capacitance values less than the capacitance value of the smallest capacitor equal to the sum of the individual capacitive-reactance values equal to the source voltage divided by total current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Thermal energy Free electrons Doping None of these Valence electrons Thermal energy Free electrons Doping None of these Valence electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts mechanical pressure to electrical energy is called a: None of these nicad cell photodiode solar cell piezoelectric device None of these nicad cell photodiode solar cell piezoelectric device ANSWER DOWNLOAD EXAMIANS APP
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