Electronic Principles What is the difference between the kinds of charges for an electron and a proton? An electron has a positive charge and a proton has no charge None of these An electron has a negative charge and a proton has a positive charge An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has no charge An electron has a positive charge and a proton has no charge None of these An electron has a negative charge and a proton has a positive charge An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has no charge ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A dielectric material is: None of these a good conductor of magnetic fields a good conductor a good insulator a poor conductor of electrostatic fields None of these a good conductor of magnetic fields a good conductor a good insulator a poor conductor of electrostatic fields ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: doubles the amount of a capacitive reactance None of these multiplies the capacitive reactance by 6.28 cuts the capacitive reactance in half has no effect on the capacitive reactance doubles the amount of a capacitive reactance None of these multiplies the capacitive reactance by 6.28 cuts the capacitive reactance in half has no effect on the capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has No holes many free electrons many holes None of these a few free electrons and holes No holes many free electrons many holes None of these a few free electrons and holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 180 4 None of these 0.5 0.25 180 4 None of these 0.5 0.25 ANSWER DOWNLOAD EXAMIANS APP
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