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 None of these 410 Ohm 550 Ohm 400 Ohm 310 Ohm None of these 410 Ohm 550 Ohm 400 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts chemical energy to electrical energy is called a: thermocouple chemical cell electric device solar cell None of these thermocouple chemical cell electric device solar cell None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of a generator? None of these Current is induced in a conductor that is moving through a magnetic field Like magnetic poles repel; unlike poles attract Like magnetic poles attract; unlike poles repel Current flowing through a conductor generates a magnetic field None of these Current is induced in a conductor that is moving through a magnetic field Like magnetic poles repel; unlike poles attract Like magnetic poles attract; unlike poles repel Current flowing through a conductor generates a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the number of cycles completed in one second None of these the time required to complete one full cycle equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second None of these the time required to complete one full cycle equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The emitter diode is usually Nonconducting None of these Reverse-biased Forward-biased Operating in the breakdwon region Nonconducting None of these Reverse-biased Forward-biased Operating in the breakdwon region ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.3 A 0.4 A 0.6 A 0.2 A None of these 0.3 A 0.4 A 0.6 A 0.2 A None of these ANSWER DOWNLOAD EXAMIANS APP
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