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 550 Ohm 400 Ohm None of these 410 Ohm 310 Ohm 550 Ohm 400 Ohm None of these 410 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? Wattmeter None of these Ohmmeter Ammeter Voltmeter Wattmeter None of these Ohmmeter Ammeter Voltmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately applies to the frequency of a waveform? The actual frequency of a sine waveform is 1.41 times the working frequency None of these Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The longer the period of a waveform, the lower its frequency The higher the amplitude of a waveform, the higher its frequency The actual frequency of a sine waveform is 1.41 times the working frequency None of these Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The longer the period of a waveform, the lower its frequency The higher the amplitude of a waveform, the higher its frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for voltage in a parallel circuit? None of these The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit The total voltage in a parallel circuit is always less than the value of the smallest voltage The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage in a parallel circuit is equal to the average value of the individual voltages None of these The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit The total voltage in a parallel circuit is always less than the value of the smallest voltage The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage in a parallel circuit is equal to the average value of the individual voltages 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? 70.7Ohm None of these 60 Ohm 99.3 Ohm 250 Ohm 70.7Ohm None of these 60 Ohm 99.3 Ohm 250 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-aiding form. If the sources are rated at 6 V and 9 V, what is the total source voltage? None of these 7.5 V 16 V 8 V 15 V None of these 7.5 V 16 V 8 V 15 V ANSWER DOWNLOAD EXAMIANS APP
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