Electronic Principles A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation? 20 mW 200 mW 10 mW 300 mW None of these 20 mW 200 mW 10 mW 300 mW None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 707 V None of these 700 V 208 V 651 V 707 V None of these 700 V 208 V 651 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has many free electrons No holes many holes None of these a few free electrons and holes many free electrons No holes many holes None of these a few free electrons and holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Thermal energy Valence electrons None of these Free electrons Doping Thermal energy Valence electrons None of these Free electrons Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current is The force that causes electrons to flow An imbalance of electrical charges The flow of charged particles through a material The number of free electrons in an atom None of these The force that causes electrons to flow An imbalance of electrical charges The flow of charged particles through a material The number of free electrons in an atom None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? Combinations of resistance and inductive reactance provide any opposition to current flow None of these Resistances provide the only opposition to current flow Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree Combinations of resistance and inductive reactance provide any opposition to current flow None of these Resistances provide the only opposition to current flow Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree ANSWER DOWNLOAD EXAMIANS APP
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