Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Capacitive reactance provides the only opposition to current flow The ac voltage leads the current by 90 degree None of these Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Capacitive reactance provides the only opposition to current flow The ac voltage leads the current by 90 degree None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has many holes many free electrons None of these No holes a few free electrons and holes many holes many free electrons None of these No holes a few free electrons and holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? Three - negative, positive and neutral terminals One - a negative terminal None of these Two - a negative terminal and a positive terminal Four - two negative and two positive Three - negative, positive and neutral terminals One - a negative terminal None of these Two - a negative terminal and a positive terminal Four - two negative and two positive ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following kinds of materials has the lowest permeability? None of these A paramagnetic material A diamagnetic material A feiTomagnetic material All of these None of these A paramagnetic material A diamagnetic material A feiTomagnetic material All of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? 3 W 64 W 6 W None of these 122 W 3 W 64 W 6 W None of these 122 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A battery is a device composed of one or more: None of these solar cells voltage generators chemical cells piezoeletric cells None of these solar cells voltage generators chemical cells piezoeletric cells ANSWER DOWNLOAD EXAMIANS APP
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