Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Increases None of these Decreases Stays the same 0oC Increases None of these Decreases Stays the same 0oC ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff? 20 k Ohm or more None of these 20 km or less 200 k Ohm or more 200 k Ohm or less 20 k Ohm or more None of these 20 km or less 200 k Ohm or more 200 k Ohm or less ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The concentration of lines of magnetic force The force that maintains lines of force None of these The rate of change of the number of lines of magnetic force The opposition to a build-up of magnetic fields The concentration of lines of magnetic force The force that maintains lines of force None of these The rate of change of the number of lines of magnetic force The opposition to a build-up of magnetic fields ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the time required for the voltage to rise from 10% to 90% of the peak amplitude the time required to complete one full cycle None of these equal to 0.707 times the peak amplitude the number of cycles completed in one second the time required for the voltage to rise from 10% to 90% of the peak amplitude the time required to complete one full cycle None of these equal to 0.707 times the peak amplitude the number of cycles completed in one second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract, while unlike poles repel Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract, while unlike poles repel Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltage in a parallel RL circuit? The total voltage lags the total current by less than 90 The voltage always has the same amplitude and phase for every part of the circuit The total voltages is less than the sum of the voltages across the resistance and inductance None of these The total voltage is equal to the sum of the voltages across the resistance and inductance The total voltage lags the total current by less than 90 The voltage always has the same amplitude and phase for every part of the circuit The total voltages is less than the sum of the voltages across the resistance and inductance None of these The total voltage is equal to the sum of the voltages across the resistance and inductance ANSWER DOWNLOAD EXAMIANS APP
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