Electronic Principles A device that converts mechanical into electrical energy is? thermocouple solar cell generator chemical cell None of these thermocouple solar cell generator chemical cell None of these 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? None of these 700 V 208 V 707 V 651 V None of these 700 V 208 V 707 V 651 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Free electrons Valence electrons Thermal energy None of these Doping Free electrons Valence electrons Thermal energy None of these Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? None of these 7.8 mA 208 mA 300 mA 200 mA None of these 7.8 mA 208 mA 300 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? None of these Four - two negative and two positive One - a negative terminal Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal None of these Four - two negative and two positive One - a negative terminal Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff current source has a resistance of At least 10 Ohm Less than 100 k Ohm None of these Less than 10 Ohm More than 100 k Ohm At least 10 Ohm Less than 100 k Ohm None of these Less than 10 Ohm More than 100 k Ohm ANSWER DOWNLOAD EXAMIANS APP
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