Electronic Principles Which one of the following statements most accurately applies to the frequency of a waveform? The actual frequency of a sine waveform is 1.41 times the working frequency Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The higher the amplitude of a waveform, the higher its frequency The longer the period of a waveform, the lower its frequency None of these The actual frequency of a sine waveform is 1.41 times the working frequency Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The higher the amplitude of a waveform, the higher its frequency The longer the period of a waveform, the lower its frequency None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation? 10 mW None of these 20 mW 300 mW 200 mW 10 mW None of these 20 mW 300 mW 200 mW ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: equal to 0.707 times the peak amplitude None of these the time required for the voltage to rise from 10% to 90% of the peak amplitude the time required to complete one full cycle the number of cycles completed in one second equal to 0.707 times the peak amplitude None of these the time required for the voltage to rise from 10% to 90% of the peak amplitude the time required to complete one full cycle the number of cycles completed in one second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements regarding ac circuits is correct? Current leads the voltage through a resistor All of these None of these Current and voltages are in phase through a resistor Current lags the voltage through a resistor Current leads the voltage through a resistor All of these None of these Current and voltages are in phase through a resistor Current lags the voltage through a resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Voltmeter Wattmeter Ohmmeter Ammeter None of these Voltmeter Wattmeter Ohmmeter Ammeter None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? None of these 150 ohm 220 ohm 690 ohm 445 ohm None of these 150 ohm 220 ohm 690 ohm 445 ohm ANSWER DOWNLOAD EXAMIANS APP
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