Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Ohmmeter None of these Ammeter Wattmeter Voltmeter Ohmmeter None of these Ammeter Wattmeter Voltmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rms value of a sine waveform is: None of these the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle equal to 1.41 times the peak amplitude None of these the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle equal to 1.41 times the peak amplitude ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts mechanical pressure to electrical energy is called a: photodiode solar cell nicad cell piezoelectric device None of these photodiode solar cell nicad cell piezoelectric device None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? None of these Electronical energy Mechanical energy Chemical energy Solar energy None of these Electronical energy Mechanical energy Chemical energy Solar energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 13 mA 0.05 mA None of these 3.75 mA 3.2 mA 13 mA 0.05 mA None of these 3.75 mA 3.2 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best describes magnetic hysteresis? Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the core material is saturated ANSWER DOWNLOAD EXAMIANS APP
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