Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 43891 3 None of these 43922 2 43891 3 None of these 43922 2 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the phase shift between total current and voltage, if 100 ohm resistor connected in parallel with an inductor that has a reactance of 200W? 90 degree 0 degree 180 degree 26.6 degree None of these 90 degree 0 degree 180 degree 26.6 degree None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.4 A None of these 0.6 A 0.2 A 0.3 A 0.4 A None of these 0.6 A 0.2 A 0.3 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best applies to a parallel RLC circuit? None of these All of these The voltage waveform for each component always has the same amplitude and phase as the applied voltage The sum of the current is always less than the applied current The current waveform for each component always has the same amplitude and phase as the applied current None of these All of these The voltage waveform for each component always has the same amplitude and phase as the applied voltage The sum of the current is always less than the applied current The current waveform for each component always has the same amplitude and phase as the applied current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? Inductive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow Combinations of resistance and inductive reactance provide any opposition to current flow None of these The ac voltage lags the current by 90 degree Inductive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow Combinations of resistance and inductive reactance provide any opposition to current flow None of these The ac voltage lags the current by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: cuts the capacitive reactance in half doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance None of these cuts the capacitive reactance in half doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance None of these ANSWER DOWNLOAD EXAMIANS APP
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