Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 7.75 µA None of these 10.3 µA 14.8 µA 7.8 µA 7.75 µA None of these 10.3 µA 14.8 µA 7.8 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding? 20 A None of these 50 A 0.20833333333333 20 A None of these 50 A 0.20833333333333 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best describes magnetic hysteresis? Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently None of these Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently None of these Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: ac current leads the voltage by 90 degree ac current and voltage are exactly in phase None of these ac current is converted to dc voltage ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree ac current and voltage are exactly in phase None of these ac current is converted to dc voltage ac current lags the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 kV is: 1000 V None of these 1000 mV 1.00 V 100 mV 1000 V None of these 1000 mV 1.00 V 100 mV ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles For normal operation of the transistor, the collector diode has to be Operating in the breakdown region None of these Forward-biased Nonconducting Reverse-biased Operating in the breakdown region None of these Forward-biased Nonconducting Reverse-biased ANSWER DOWNLOAD EXAMIANS APP
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