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 310 Ohm 410 Ohm None of these 400 Ohm 550 Ohm 310 Ohm 410 Ohm None of these 400 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A high-pass filter: has no effect on ac signals passes higher-frequency signals and reduces lower-frequency signals passes lower-frequency signals and reduces higher-frequency signals None of these increases the level of all frequencies by a significant amount has no effect on ac signals passes higher-frequency signals and reduces lower-frequency signals passes lower-frequency signals and reduces higher-frequency signals None of these increases the level of all frequencies by a significant amount ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? One - a negative terminal Two - a negative terminal and a positive terminal Four - two negative and two positive Three - negative, positive and neutral terminals None of these One - a negative terminal Two - a negative terminal and a positive terminal Four - two negative and two positive Three - negative, positive and neutral terminals None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value? None of these 90 Ohm - 101 ohm 90 Ohm - 110 ohm 99 Ohm - 102 ohm 98 Ohm - 100.1 ohm None of these 90 Ohm - 101 ohm 90 Ohm - 110 ohm 99 Ohm - 102 ohm 98 Ohm - 100.1 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: solar cell thermocouple piezoelectric devices None of these chemical cell solar cell thermocouple piezoelectric devices None of these chemical cell ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 707 V 208 V 651 V None of these 700 V 707 V 208 V 651 V None of these 700 V ANSWER DOWNLOAD EXAMIANS APP
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