Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 14.8 µA 7.75 µA 10.3 µA 7.8 µA None of these 14.8 µA 7.75 µA 10.3 µA 7.8 µA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff? 100 Ohm 6 Ohm None of these 50 Ohm or more 5 Ohm 100 Ohm 6 Ohm None of these 50 Ohm or more 5 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be: Same as the primary current No more than 10% less than the primary current None of these Twice the primary current One-half the primary current Same as the primary current No more than 10% less than the primary current None of these Twice the primary current One-half the primary current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles As the temperature increases, the current gain can be any of the above decreases increases None of these contant can be any of the above decreases increases None of these contant ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? None of these Doping Valence electrons Thermal energy Free electrons None of these Doping Valence electrons Thermal energy Free electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm? 60 Ohm 99.3 Ohm 250 Ohm None of these 70.7Ohm 60 Ohm 99.3 Ohm 250 Ohm None of these 70.7Ohm ANSWER DOWNLOAD EXAMIANS APP
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