Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit changes direction periodically The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in one direction at a steady level None of these The current in an ac circuit changes direction periodically The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in one direction at a steady level None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff? None of these 6 Ohm 5 Ohm 100 Ohm 50 Ohm or more None of these 6 Ohm 5 Ohm 100 Ohm 50 Ohm or more ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff? None of these 10 k Ohm 20 k Ohm 2 k Ohm 1 k Ohm None of these 10 k Ohm 20 k Ohm 2 k Ohm 1 k Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the time required to complete one full cycle the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude None of these the time required to complete one full cycle the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 kV is: 1000 mV 1000 V None of these 1.00 V 100 mV 1000 mV 1000 V None of these 1.00 V 100 mV ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit? Magnetomotive force Flux density Reluctance Number of lines of force None of these Magnetomotive force Flux density Reluctance Number of lines of force None of these ANSWER DOWNLOAD EXAMIANS APP
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