Electronic Principles Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff? 10 Ohm 30 Ohm None of these 20 Ohm 100 Ohm 10 Ohm 30 Ohm None of these 20 Ohm 100 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? 0.955 A None of these 2.02 A 0.02 A 0.41666666666667 0.955 A None of these 2.02 A 0.02 A 0.41666666666667 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current? P = IE I = P/E P = I2R P = E2/R None of these P = IE I = P/E P = I2R P = E2/R None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? 300 µA None of these 350 µA 0.25 µA 250 µA 300 µA None of these 350 µA 0.25 µA 250 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: an increase in current through the coil causes no further increase in the mmf None of these frequent changes in the direction of current through the coil causes heating effects in the core material the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf None of these frequent changes in the direction of current through the coil causes heating effects in the core material the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How may valence electrons does a silicon atom have? 1 4 None of these 2 1 4 None of these 2 ANSWER DOWNLOAD EXAMIANS APP
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