Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Doping Free electrons Thermal energy Valence electrons None of these Doping Free electrons Thermal energy Valence electrons None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles As the temperature increases, the current gain contant decreases can be any of the above None of these increases contant decreases can be any of the above None of these increases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the emitter current base current None of these collector current supply current emitter current base current None of these collector current supply current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit? 100 V and a parallel resistance of 10 k Ohm 1000 V and a series resistance of 10 k Ohm 1000 V and a parallel resistance of 10 kOhm None of these 100 V and a series resistance of 10 k Ohm 100 V and a parallel resistance of 10 k Ohm 1000 V and a series resistance of 10 k Ohm 1000 V and a parallel resistance of 10 kOhm None of these 100 V and a series resistance of 10 k Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.2 mA 3.75 mA None of these 13 mA 0.05 mA 3.2 mA 3.75 mA None of these 13 mA 0.05 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? 24 V 600 V None of these 4.73 0.4 V 24 V 600 V None of these 4.73 0.4 V ANSWER DOWNLOAD EXAMIANS APP
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