Electronic Principles A device that converts mechanical pressure to electrical energy is called a: piezoelectric device photodiode None of these nicad cell solar cell piezoelectric device photodiode None of these nicad cell solar cell ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The rate of change of the number of lines of magnetic force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The force that maintains lines of force The rate of change of the number of lines of magnetic force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The force that maintains lines of force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltages in a series RC circuit? The total voltage is greater than the sum of the voltages across the resistance and capacitance The voltage always has the same amplitude and phase for every part of the circuit The total voltage is less than the sum of the voltages across the resistance and capacitance None of these The total voltage is equal to the sum of the voltages across the resistance and capacitance The total voltage is greater than the sum of the voltages across the resistance and capacitance The voltage always has the same amplitude and phase for every part of the circuit The total voltage is less than the sum of the voltages across the resistance and capacitance None of these The total voltage is equal to the sum of the voltages across the resistance and capacitance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles For a pure capacitor: ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree ac current is converted to dc voltage ac current and voltage are exactly in phase None of these ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree ac current is converted to dc voltage ac current and voltage are exactly in phase None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Wattmeter Ammeter None of these Voltmeter Ohmmeter Wattmeter Ammeter None of these Voltmeter Ohmmeter 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
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