Which of the following devices or circuits changes an alternating current into a varying direct current signal?
What is a relay?
What type of switch is represented by component 3 in figure T2?
Which of the following displays an electrical quantity as a numeric value?
What type of circuit controls the amount of voltage from a power supply?
What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?
Which of the following is commonly used as a visual indicator?
Which of the following is combined with an inductor to make a tuned circuit?
What is the name of a device that combines several semiconductors and other components into one package?
What is the function of component 2 in Figure T1?
Which of the following is a resonant or tuned circuit?
Which of the following is a common reason to use shielded wire?