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 707 V 651 V 208 V 700 V None of these 707 V 651 V 208 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: multiplies the inductive reactance by 6.28 None of these doubles the amount of inductive reactance has no effect on the inductive reactance cuts the inductive reactance in half multiplies the inductive reactance by 6.28 None of these doubles the amount of inductive reactance has no effect on the inductive reactance cuts the inductive reactance in half ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The basic unit of measurement for current is the: volt ohm ampere watt None of these volt ohm ampere watt None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles One henry of inductance is defined as: the amount of counter emf required to reduce a current to 1 A None of these the amount of inductance required to change the frequency of a current by 1 Hz the number of turns of wire in an inductor multiplied by the amount of current flowing through it the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second the amount of counter emf required to reduce a current to 1 A None of these the amount of inductance required to change the frequency of a current by 1 Hz the number of turns of wire in an inductor multiplied by the amount of current flowing through it the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the time required for the voltage to rise from 10% to 90% of the peak amplitude equal to 0.707 times the peak amplitude the time required to complete one full cycle None of these the number of cycles completed in one second the time required for the voltage to rise from 10% to 90% of the peak amplitude equal to 0.707 times the peak amplitude the time required to complete one full cycle None of these the number of cycles completed in one second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source? 0.955 A None of these 0.41666666666667 0.02 A 2.02 A 0.955 A None of these 0.41666666666667 0.02 A 2.02 A ANSWER DOWNLOAD EXAMIANS APP
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