< FCC Technician Class Exam Study Guide - 2014-2018
Electrical components: fixed and variable resistors; capacitors and inductors; fuses; switches; batteries
The Question Pool
Question 1
- What electrical component is used to oppose the flow of current in a DC circuit?
- A. Inductor
- B. Resistor
- C. Voltmeter
- D. Transformer
The correct answer is B.
Question 2
- What type of component is often used as an adjustable volume control?
- A. Fixed resistor
- B. Power resistor
- C. Potentiometer
- D. Transformer
The correct answer is C.
Question 3
- What electrical parameter is controlled by a potentiometer?
- A. Inductance
- B. Resistance
- C. Capacitance
- D. Field strength
The correct answer is B.
Question 4
- What electrical component stores energy in an electric field?
- A. Resistor
- B. Capacitor
- C. Inductor
- D. Diode
The correct answer is B.
Question 5
- What type of electrical component consists of two or more conductive surfaces separated by an insulator?
- A. Resistor
- B. Potentiometer
- C. Oscillator
- D. Capacitor
The correct answer is D.
Question 6
- What type of electrical component stores energy in a magnetic field?
- A. Resistor
- B. Capacitor
- C. Inductor
- D. Diode
The correct answer is C.
Question 7
- What electrical component is usually composed of a coil of wire?
- A. Switch
- B. Capacitor
- C. Diode
- D. Inductor
The correct answer is D.
Question 8
- What electrical component is used to connect or disconnect electrical circuits?
- A. Magnetron
- B. Switch
- C. Thermistor
- D. All of these choices are correct
The correct answer is B.
Question 9
- What electrical component is used to protect other circuit components from current overloads?
- A. Fuse
- B. Capacitor
- C. Inductor
- D. All of these choices are correct
The correct answer is A.
Question 10
- Which of the following battery types is rechargeable?
- A. Nickel-metal hydride
- B. Lithium-ion
- C. Lead-acid gel-cell
- D. All of these choices are correct
The correct answer is D.
Question 11
- Which of the following battery types is not rechargeable?
- A. Nickel-cadmium
- B. Carbon-zinc
- C. Lead-acid
- D. Lithium-ion
The correct answer is B.
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