Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 700 V None of these 651 V 707 V 208 V 700 V None of these 651 V 707 V 208 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rms value of a sine waveform is: the number of cycles completed in one second None of these equal to 0.707 times the peak amplitude equal to 1.41 times the peak amplitude the time required to complete one full cycle the number of cycles completed in one second None of these equal to 0.707 times the peak amplitude equal to 1.41 times the peak amplitude the time required to complete one full cycle ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately describes the nature of inductive reactance? Inductive reactance is another term for counter emf Inductive reactance is a force that tends to overcome the effects of counter emf Inductive reactance is an opposition to current flow in ac circuits Inductive reactance is an opposition to current flow in dc circuits None of these Inductive reactance is another term for counter emf Inductive reactance is a force that tends to overcome the effects of counter emf Inductive reactance is an opposition to current flow in ac circuits Inductive reactance is an opposition to current flow in dc circuits None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltages in a series RL circuit? None of these The voltage always has the same amplitude and phase for every part of the circuit The total voltage is less than the sum of the voltages across the resistance and inductance The total voltages is equal to the sum of the voltages across the resistance and inductance The total voltage lags the total current by less than 90 None of these The voltage always has the same amplitude and phase for every part of the circuit The total voltage is less than the sum of the voltages across the resistance and inductance The total voltages is equal to the sum of the voltages across the resistance and inductance The total voltage lags the total current by less than 90 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? Magnetomotive force Reluctance None of these Flux density Number of lines of force Magnetomotive force Reluctance None of these Flux density Number of lines of force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The direction of electron current flow is: from right to left None of these from neutral to positive from negative to positive from positive to negative from right to left None of these from neutral to positive from negative to positive from positive to negative ANSWER DOWNLOAD EXAMIANS APP
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