Electronic Principles What is the smallest number of polarities required for current flow? 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 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: thermocouple piezoelectric devices chemical cell None of these solar cell thermocouple piezoelectric devices chemical cell None of these solar cell ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? None of these Reluctance Magnetomotive force Flux density Number of lines of force None of these Reluctance Magnetomotive force Flux density Number of lines of force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? many less than the free electrons None of these Only those produced by thermal energy Same number as free electrons many less than the free electrons None of these Only those produced by thermal energy Same number as free electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has how many doped regions? 3 4 2 None of these 1 3 4 2 None of these 1 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In an intrinsic semiconductor, the number of free electrons Impossible to say Is greater than the number of holes Is less than the number of holes None of these Equals the number of holes Impossible to say Is greater than the number of holes Is less than the number of holes None of these Equals the number of holes ANSWER DOWNLOAD EXAMIANS APP
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