Electronic Principles Which one of the following phrasers best describes flux density? The force that maintains lines of force The rate of change of the number of lines of magnetic force The concentration of lines of magnetic force The opposition to a build-up of magnetic fields None of these The force that maintains lines of force The rate of change of the number of lines of magnetic force The concentration of lines of magnetic force The opposition to a build-up of magnetic fields None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold 220 Ohm, 5% 220 Ohm, 10% None of these 22,000 Ohm, 5% 22, 000 Ohm, 10% 220 Ohm, 5% 220 Ohm, 10% None of these 22,000 Ohm, 5% 22, 000 Ohm, 10% ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source? 0.995 mA 157 raA 2.02 A None of these 0.151 mA 0.995 mA 157 raA 2.02 A None of these 0.151 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? many Only those produced by thermal energy Same number as free electrons less than the free electrons None of these many Only those produced by thermal energy Same number as free electrons less than the free electrons None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? Amplify weak signals Regulate voltage None of these Emit light Rectify line voltage Amplify weak signals Regulate voltage None of these Emit light Rectify line voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Reducing the amount of current through an inductor: reduces the value of inductance by one-half multiplies the value of inductance by two multiplies the value of inductance by four has no effect on the inductance None of these reduces the value of inductance by one-half multiplies the value of inductance by two multiplies the value of inductance by four has no effect on the inductance None of these ANSWER DOWNLOAD EXAMIANS APP
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