Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? None of these 180 4 0.5 0.25 None of these 180 4 0.5 0.25 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A farad is defined as the amount of capacitance necessary for: causing an ac phase shift greater than 90 degree changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing None of these dissipating 1 W of power storing 1 V for 1 second causing an ac phase shift greater than 90 degree changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing None of these dissipating 1 W of power storing 1 V for 1 second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: thrice the amount of total current has no effect on the total circuit current None of these cuts the total current by one-half doubles the amount of total current thrice the amount of total current has no effect on the total circuit current None of these cuts the total current by one-half doubles the amount of total current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of Kirchhoffs current law? The current through a resistance is proportional to the value of resistance and the IR drop across it None of these The algebraic sum of currents in a loop is equal to zero The algebraic sum of currents entering and leaving a point is equal to zero The total current in a parallel circuit is less than the value of the smallest current The current through a resistance is proportional to the value of resistance and the IR drop across it None of these The algebraic sum of currents in a loop is equal to zero The algebraic sum of currents entering and leaving a point is equal to zero The total current in a parallel circuit is less than the value of the smallest current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating below its resonant frequency, a series RLC circuit has the characteristics of a: purely resistive circuit series RLC circuit operated above its resonant frequency None of these series RC circuit series RL circuit purely resistive circuit series RLC circuit operated above its resonant frequency None of these series RC circuit series RL circuit ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: their waveforms are both ac or both dc None of these 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 their waveforms are both ac or both dc None of these 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 ANSWER DOWNLOAD EXAMIANS APP
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