Electronic Principles How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source? 2.02 A None of these 0.02 A 0.41666666666667 0.955 A 2.02 A None of these 0.02 A 0.41666666666667 0.955 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 180 0.5 0.25 4 None of these 180 0.5 0.25 4 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: their waveforms cross through zero and reach positive and negative peaks at the same time All of these they have the same amplitude and frequency None of these their waveforms are both ac or both dc their waveforms cross through zero and reach positive and negative peaks at the same time All of these they have the same amplitude and frequency None of these their waveforms are both ac or both dc ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: ac current and voltage are exactly in phase None of these ac current is converted to dc voltage ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree ac current and voltage are exactly in phase None of these ac current is converted to dc voltage ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? None of these 10.3 µA 7.75 µA 14.8 µA 7.8 µA None of these 10.3 µA 7.75 µA 14.8 µA 7.8 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements applies to common, non-rechargeable flashlight batteries? Common flashlight batteries are secondary wet-cell batteries Common flashlight batteries are secondary dry-cell batteries Common flashlight batteries are primary dry-cell batteries Common flashlight batteries are primary wet-cell batteries None of these Common flashlight batteries are secondary wet-cell batteries Common flashlight batteries are secondary dry-cell batteries Common flashlight batteries are primary dry-cell batteries Common flashlight batteries are primary wet-cell batteries None of these ANSWER DOWNLOAD EXAMIANS APP
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