Electronic Principles A battery is a device composed of one or more: piezoeletric cells chemical cells voltage generators None of these solar cells piezoeletric cells chemical cells voltage generators None of these solar cells ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Stays the same None of these 0oC Increases Decreases Stays the same None of these 0oC Increases Decreases 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: No more than 10% less than the primary current One-half the primary current None of these Twice the primary current Same as the primary current No more than 10% less than the primary current One-half the primary current None of these Twice the primary current Same as the primary current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? 0.25 µA None of these 350 µA 300 µA 250 µA 0.25 µA None of these 350 µA 300 µA 250 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If the current gain is 200 and the collector current is 100 mA, the base current is 0.083333333333333 2 mA None of these 0.5 mA 200 A 0.083333333333333 2 mA None of these 0.5 mA 200 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The north pole of a magnet is the one: that would be repelled by the south pole of another magnet that would be attracted to the earth's south magnetic pole None of these that has its molecules arranged in a random pattern that would be attracted to the earth's north magnetic pole that would be repelled by the south pole of another magnet that would be attracted to the earth's south magnetic pole None of these that has its molecules arranged in a random pattern that would be attracted to the earth's north magnetic pole ANSWER DOWNLOAD EXAMIANS APP
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