Technician Practice Test T6 – Electronic Components and Schematics
Components and schematic symbols, including the pool figures T-1, T-2 and T-3. Tap an answer to check it.
Score: 0 / 0 (15)
Question 1
What electrical component opposes the flow of current in a DC circuit?
A resistor opposes (limits) the flow of current.
Question 2
What type of component is often used as an adjustable volume control?
A potentiometer is a variable resistor, often used as a volume control.
Question 3
What electrical parameter is controlled by a potentiometer?
A potentiometer controls resistance; turning the knob changes it.
Question 4
What electrical component stores energy in an electric field?
A capacitor stores energy in an electric field between its plates.
Question 5
What type of electrical component consists of conductive surfaces separated by an insulator?
A capacitor is made of two conductive surfaces (plates) separated by an insulator (dielectric).
Question 6
What type of electrical component stores energy in a magnetic field?
An inductor stores energy in a magnetic field.
Question 7
What electrical component is typically constructed as a coil of wire?
An inductor is usually a coil of wire.
Question 8
What is the function of an SPDT switch?
SPDT (single-pole, double-throw) connects one circuit to either of two other circuits.
Question 9
What type of switch is represented by component 3 in figure T-2?
Component 3 in figure T-2 is a single-pole single-throw (SPST) switch: one circuit, simply on or off.
Question 10
Which of the following battery chemistries is rechargeable?
Nickel-metal hydride, lithium-ion and lead-acid gel-cell batteries can all be recharged.
Question 11
Which of the following battery chemistries is not rechargeable?
Carbon-zinc batteries are not rechargeable.
Question 12
Which is true about forward voltage drop in a diode?
Forward voltage drop depends on the diode type; for example Schottky diodes have a lower drop than silicon diodes.
Question 13
What electronic component allows current to flow in only one direction?
A diode lets current flow in only one direction.
Question 14
Which of these components can be used as an electronic switch?
A transistor can act as an electronic switch.
Question 15
Which of the following components can consist of three regions of semiconductor material?
A transistor can consist of three regions of semiconductor material (for example NPN or PNP).
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The questions are the official public Technician pool. The rules come from FCC Part 97. Always check these sources for the current rules.