Electronic Principles In a pure inductor: ac current and voltage are exactly in phase ac current is converted to dc voltage None of these ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree ac current and voltage are exactly in phase ac current is converted to dc voltage None of these ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts mechanical pressure to electrical energy is called a: None of these photodiode piezoelectric device solar cell nicad cell None of these photodiode piezoelectric device solar cell nicad cell ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A battery is a device composed of one or more: chemical cells voltage generators None of these piezoeletric cells solar cells chemical cells voltage generators None of these piezoeletric cells solar cells ANSWER DOWNLOAD EXAMIANS APP
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? None of these 208 mA 300 mA 7.8 mA 200 mA None of these 208 mA 300 mA 7.8 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? None of these 100 A 0.41666666666667 0.1 A 1000 A None of these 100 A 0.41666666666667 0.1 A 1000 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? Rectify line voltage None of these Emit light Amplify weak signals Regulate voltage Rectify line voltage None of these Emit light Amplify weak signals Regulate voltage ANSWER DOWNLOAD EXAMIANS APP
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