Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Thermal energy None of these Free electrons Valence electrons Doping Thermal energy None of these Free electrons Valence electrons Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of KirchhofFs voltage law? The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it The algebraic sum of voltages in a loop is equal to zero The algebraic sum of voltages entering and leaving a point is equal to zero The total voltage in a parallel circuit is less than the value of the smallest voltage None of these The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it The algebraic sum of voltages in a loop is equal to zero The algebraic sum of voltages entering and leaving a point is equal to zero The total voltage in a parallel circuit is less than the value of the smallest voltage None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The north pole of a magnet is the one: that would be attracted to the earth's north magnetic pole 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 has its molecules arranged in a random pattern that would be attracted to the earth's north magnetic pole 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 has its molecules arranged in a random pattern ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from 10% of the peak value to 70.7% of the peak value from zero to its peak value None of these from zero to its rms value from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value from zero to its peak value None of these from zero to its rms value from 10% of the peak value to 90% of the peak value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the maximum positive or negative value the amplitude at 90% of the maximum value the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value None of these the maximum positive or negative value the amplitude at 90% of the maximum value the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Most AC power is obtained from: generators oscillators batteries None of these lightning generators oscillators batteries None of these lightning ANSWER DOWNLOAD EXAMIANS APP
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