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? 550 Ohm 410 Ohm 400 Ohm None of these 310 Ohm 550 Ohm 410 Ohm 400 Ohm None of these 310 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 0.41666666666667 2.02 A 0.02 A 0.955 A None of these 0.41666666666667 2.02 A 0.02 A 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 0.25 µA 250 µA 350 µA None of these 300 µA 0.25 µA 250 µA 350 µA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What are the main parts of an atom? Protons only None of these Electrons, protons, and ions Electrons, ions, and neutrons Electrons, protons, and neutrons Protons only None of these Electrons, protons, and ions Electrons, ions, and neutrons Electrons, protons, and neutrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the phase shift between total current and voltage in the circuit of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm 75 degree 180 degree 30 degree 45 degree None of these 75 degree 180 degree 30 degree 45 degree None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the: battery commutator None of these rotor armature battery commutator None of these rotor armature ANSWER DOWNLOAD EXAMIANS APP
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