T6D-2010: Component functions
Which of the following devices or circuits changes an alternating current into a varying direct current signal?
What best describes a relay?
A switch controlled by an electromagnet
A current controlled amplifier
An optical sensor
A pass transistor
What type of switch is represented by item 3 in figure T2?
Which of the following can be used to display signal strength on a numeric scale?
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 used together 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?
Control the flow of current
Give off light when current flows through it
Supply electrical energy
Convert electrical energy into radio waves
Which of the following is a common use of coaxial cable?
Carry RF signals between a radio and antenna
Carry dc power from a vehicle battery to a mobile radio
Secure masts, tubing, and other cylindrical objects on towers
Connect data signals from a TNC to a computer
● = Unseen
● = Weak
● = Review
● = Learned
● = Incorrect answer