Electronic Principles The period of a waveform is: the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second the time required to complete one full cycle None of these equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second the time required to complete one full cycle None of these equal to 0.707 times the peak amplitude ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of a generator? None of these Like magnetic poles repel; unlike poles attract Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract; unlike poles repel Current flowing through a conductor generates a magnetic field None of these Like magnetic poles repel; unlike poles attract Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract; unlike poles repel Current flowing through a conductor generates a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What are the main parts of an atom? Electrons, ions, and neutrons Electrons, protons, and neutrons None of these Electrons, protons, and ions Protons only Electrons, ions, and neutrons Electrons, protons, and neutrons None of these Electrons, protons, and ions Protons only 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? None of these 26.6 degree 90 degree 0 degree 180 degree None of these 26.6 degree 90 degree 0 degree 180 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be: One-half the primary current None of these No more than 10% less than the primary current Same as the primary current Twice the primary current One-half the primary current None of these No more than 10% less than the primary current Same as the primary current Twice the primary current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 30 V 18 V 24 V 12 V None of these 30 V 18 V 24 V 12 V None of these ANSWER DOWNLOAD EXAMIANS APP
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