Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 10.3 µA 14.8 µA 7.75 µA None of these 7.8 µA 10.3 µA 14.8 µA 7.75 µA None of these 7.8 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 310 Ohm 400 Ohm 550 Ohm None of these 410 Ohm 310 Ohm 400 Ohm 550 Ohm None of these 410 Ohm 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 50 Ohm or more 5 Ohm None of these 6 Ohm 100 Ohm 50 Ohm or more 5 Ohm None of these 6 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? None of these 60 Ohm 754 Ohm 30 Ohm 120 Ohm None of these 60 Ohm 754 Ohm 30 Ohm 120 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source? 0.41666666666667 0.955 A 0.02 A 2.02 A None of these 0.41666666666667 0.955 A 0.02 A 2.02 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature None of these Increases Stays the same Decreases 0oC None of these Increases Stays the same Decreases 0oC ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS