Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? None of these Doping Thermal energy Free electrons Valence electrons None of these Doping Thermal energy Free electrons Valence electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of KirchhofFs voltage law? The algebraic sum of voltages in a loop 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 entering and leaving a point is equal to zero The algebraic sum of voltages in a loop 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 entering and leaving a point is equal to zero ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: ac current lags the voltage by 90 degree ac current and voltage are exactly in phase ac current is converted to dc voltage ac current leads the voltage by 90 degree None of these ac current lags the voltage by 90 degree ac current and voltage are exactly in phase ac current is converted to dc voltage ac current leads the voltage by 90 degree None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of 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 the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second None of these the time required to complete one full cycle ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit? Permeance Retentivity There is no valid comparison Permeability Reluctance Permeance Retentivity There is no valid comparison Permeability Reluctance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is most likely used for measuring the rate of electron flow? Wattmeter Ohmmeter Ammeter Voltmeter None of these Wattmeter Ohmmeter Ammeter Voltmeter None of these ANSWER DOWNLOAD EXAMIANS APP
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