AMT Oral & practical exam guide (Dale Crane) questions with correct answers

What constitutes a capacitor? CORRECT ANSWER Two conductors separated by an insulator. What is the purpose of a capacitor? CORRECT ANSWER It stores electrical energy in electrostatic fields. Does a capacitor in an AC cause the current to lead or lag the voltage? CORRECT ANSWER It causes the current to lead the voltage. What is the basic unit of capacitance? CORRECT ANSWER The farad. Why should electrolytic capacitors not be used in an AC circuit? CORRECT ANSWER They are polarized, An electrolytic capacitor will pass current of one polarity, but will block current of the opposite polarity. What is meant by inductance? CORRECT ANSWER The ability to store electrical energy in electromagnetic fields. What is the basic unit of inductance? CORRECT ANSWER The henry.