Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from zero to its rms value from 10% of the peak value to 90% of the peak value None of these from 10% of the peak value to 70.7% of the peak value from zero to its peak value from zero to its rms value from 10% of the peak value to 90% of the peak value None of these from 10% of the peak value to 70.7% of the peak value from zero to its peak value 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? 0.2 A 0.3 A 0.4 A 0.6 A None of these 0.2 A 0.3 A 0.4 A 0.6 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Free electrons None of these Thermal energy Valence electrons Doping Free electrons None of these Thermal energy Valence electrons Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically None of these The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value? 90 Ohm - 101 ohm 90 Ohm - 110 ohm 99 Ohm - 102 ohm None of these 98 Ohm - 100.1 ohm 90 Ohm - 101 ohm 90 Ohm - 110 ohm 99 Ohm - 102 ohm None of these 98 Ohm - 100.1 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best applies to a series RLC circuit? None of these The sum of the current is always less than the applied current All of these The current waveform for each component always has the same amplitude and phase as the applied current The voltage waveform for each component always has the same amplitude and phase as the applied voltage None of these The sum of the current is always less than the applied current All of these The current waveform for each component always has the same amplitude and phase as the applied current The voltage waveform for each component always has the same amplitude and phase as the applied voltage ANSWER DOWNLOAD EXAMIANS APP
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