Electronic Principles What is the smallest number of polarities required for current flow? None of these Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal One - a negative terminal Four - two negative and two positive None of these Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal One - a negative terminal Four - two negative and two positive ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? None of these Same number as free electrons less than the free electrons Only those produced by thermal energy many None of these Same number as free electrons less than the free electrons Only those produced by thermal energy many ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rms value of a sine waveform is: the number of cycles completed in one second None of these the time required to complete one full cycle equal to 0.707 times the peak amplitude equal to 1.41 times the peak amplitude the number of cycles completed in one second None of these the time required to complete one full cycle equal to 0.707 times the peak amplitude equal to 1.41 times the peak amplitude ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 60-W light bulb that is operating at 120 V? None of these 180 A 7200 A 0.083333333333333 0.5A None of these 180 A 7200 A 0.083333333333333 0.5A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree None of these ac current is converted to dc voltage ac current and voltage are exactly in phase ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree None of these ac current is converted to dc voltage ac current and voltage are exactly in phase ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? None of these The voltage causes current to flow in two directions at the same time The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically The voltage remains at one polarity but changes value periodically None of these The voltage causes current to flow in two directions at the same time The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically The voltage remains at one polarity but changes value periodically ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS