Electronic Principles - Study Mode

[#101] An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?
Correct Answer

(D) Thermal energy

[#102] An audio transformer has a turn ratio of 9, What is its impedance ratio?
Correct Answer

(A) 81

[#103] How many protons does the nucleus of a silicon atom contain?
Correct Answer

(C) 14

[#104] A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage?
Correct Answer

(A) 3 V

[#105] The emitter diode is usually
Correct Answer

(A) Forward-biased