Electronic Principles The north pole of a magnet is the one: that would be attracted to the earth's north magnetic pole that has its molecules arranged in a random pattern None of these that would be repelled by the south pole of another magnet that would be attracted to the earth's south magnetic pole that would be attracted to the earth's north magnetic pole that has its molecules arranged in a random pattern None of these that would be repelled by the south pole of another magnet that would be attracted to the earth's south magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 410 Ohm None of these 550 Ohm 400 Ohm 310 Ohm 410 Ohm None of these 550 Ohm 400 Ohm 310 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? Only those produced by thermal energy None of these Same number as free electrons less than the free electrons many Only those produced by thermal energy None of these Same number as free electrons less than the free electrons many ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit flows in one direction, but changes value periodically None of these The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction at a steady level 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 None of these The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction at a steady level The current in an ac circuit flows in two directions at the same time ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.4 A None of these 0.3 A 0.6 A 0.2 A 0.4 A None of these 0.3 A 0.6 A 0.2 A 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? 5 Ohm 6 Ohm 50 Ohm or more None of these 100 Ohm 5 Ohm 6 Ohm 50 Ohm or more None of these 100 Ohm ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS