Electronic Principles Which one of the following statements is true for the voltages in a series RC circuit? The total voltage is less 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 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 total voltage is less 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 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 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 None of these they have the same amplitude and frequency All 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 None of these they have the same amplitude and frequency All of these their waveforms are both ac or both dc ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases best describes residual magnetism? Magnetism that remains in the core of an electromagnet after the current through the coil is turned off The amount of magnetic flux that is not confined to the core material of an electromagnet None of these The circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field Magnetism that remains in the core of an electromagnet after the current through the coil is turned off The amount of magnetic flux that is not confined to the core material of an electromagnet None of these The circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value None of these from zero to its rms value from zero to its peak value from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value None of these from zero to its rms value from zero to its peak value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 68.4 mA 34.4 mA 28.4 mA None of these 24.2 mA 68.4 mA 34.4 mA 28.4 mA None of these 24.2 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? Combinations of resistance and capacitive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these The ac voltage leads the current by 90 degree Capacitive reactance provides the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these The ac voltage leads the current by 90 degree Capacitive reactance provides the only opposition to current flow ANSWER DOWNLOAD EXAMIANS APP
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