Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 3 None of these 43922 43891 2 3 None of these 43922 43891 2 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: None of these cuts the inductive reactance in half multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance has no effect on the inductive reactance None of these cuts the inductive reactance in half multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance has no effect on the inductive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding? 0.20833333333333 20 A None of these 50 A 0.20833333333333 20 A None of these 50 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: an increase in current through the coil causes no further increase in the mmf None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material the core is permitted to move freely within the coil ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A battery is a device composed of one or more: chemical cells None of these voltage generators solar cells piezoeletric cells chemical cells None of these voltage generators solar cells piezoeletric cells ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Holes are the minority carriers in which type of semiconductor? n-type Intrinsic Extrinsic p-type None of these n-type Intrinsic Extrinsic p-type None of these ANSWER DOWNLOAD EXAMIANS APP
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