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Amateur Radio - Technician > T6 - Electrical components [4 Exam Questions - 4 Groups] > Flashcards

T6 - Electrical components [4 Exam Questions - 4 Groups] Flashcards

1
Q

What electrical component is used to oppose the flow of current in a DC circuit?

A. Inductor

B. Resistor

C. Voltmeter

D. Transformer

A

B. Resistor

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2
Q

What type of component is often used as an adjustable volume control?

A. Fixed resistor

B. Power resistor

C. Potentiometer

D. Transformer

A

C. Potentiometer

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3
Q

What electrical parameter is controlled by a potentiometer?

A. Inductance

B. Resistance

C. Capacitance

D. Field strength

A

B. Resistance

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4
Q

What electrical component stores energy in an electric field?

A. Resistor

B. Capacitor

C. Inductor

D. Diode

A

B. Capacitor

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5
Q

What type of electrical component consists of two or more conductive surfaces separated by an insulator?

A. Resistor

B. Potentiometer

C. Oscillator

D. Capacitor

A

D. Capacitor

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6
Q

What type of electrical component stores energy in a magnetic field?

A. Resistor

B. Capacitor

C. Inductor

D. Diode

A

C. Inductor

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7
Q

What electrical component is usually composed of a coil of wire?

A. Switch

B. Capacitor

C. Diode

D. Inductor

A

D. Inductor

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8
Q

What electrical component is used to connect or disconnect electrical circuits?

A. Magnetron

B. Switch

C. Thermistor

D. All of these choices are correct

A

B. Switch

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9
Q

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

A

A. Fuse

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10
Q

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

A

D. All of these choices are correct

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11
Q

Which of the following battery types is not rechargeable?

A. Nickel-cadmium

B. Carbon-zinc

C. Lead-acid

D. Lithium-ion

A

B. Carbon-zinc

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12
Q

What class of electronic components is capable of using a voltage or current signal to control current flow?

A. Capacitors

B. Inductors

C. Resistors

D. Transistors

A

D. Transistors

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13
Q

What electronic component allows current to flow in only one direction?

A. Resistor

B. Fuse

C. Diode

D. Driven Element

A

C. Diode

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14
Q

Which of these components can be used as an electronic switch or amplifier?

A. Oscillator

B. Potentiometer

C. Transistor

D. Voltmeter

A

C. Transistor

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15
Q

Which of the following components can be made of three layers of semiconductor material?

A. Alternator

B. Transistor

C. Triode

D. Pentagrid converter

A

B. Transistor

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16
Q

Which of the following electronic components can amplify signals?

A. Transistor

B. Variable resistor

C. Electrolytic capacitor

D. Multi-cell battery

A

A. Transistor

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17
Q

How is the cathode lead of a semiconductor diode usually identified?

A. With the word cathode

B. With a stripe

C. With the letter C

D. All of these choices are correct

A

B. With a stripe

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18
Q

What does the abbreviation LED stand for?

A. Low Emission Diode

B. Light Emitting Diode

C. Liquid Emission Detector

D. Long Echo Delay

A

B. Light Emitting Diode

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19
Q

What does the abbreviation FET stand for?

A. Field Effect Transistor

B. Fast Electron Transistor

C. Free Electron Transition

D. Field Emission Thickness

A

A. Field Effect Transistor

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20
Q

What are the names of the two electrodes of a diode?

A. Plus and minus

B. Source and drain

C. Anode and cathode

D. Gate and base

A

C. Anode and cathode

21
Q

What are the three electrodes of a PNP or NPN transistor?

A. Emitter, base, and collector

B. Source, gate, and drain

C. Cathode, grid, and plate

D. Cathode, drift cavity, and collector

A

A. Emitter, base, and collector

22
Q

What at are the three electrodes of a field effect transistor?

A. Emitter, base, and collector

B. Source, gate, and drain

C. Cathode, grid, and plate

D. Cathode, gate, and anode

A

B. Source, gate, and drain

23
Q

What is the term that describes a transistor’s ability to amplify a signal?

A. Gain

B. Forward resistance

C. Forward voltage drop

D. On resistance

A

A. Gain

24
Q

What is the name for standardized representations of components in an electrical wiring diagram?

A. Electrical depictions

B. Grey sketch

C. Schematic symbols

D. Component callouts

A

C. Schematic symbols

25
Q

What is component 1 in figure T1?

A. Resistor

B. Transistor

C. Battery

D. Connector

A

A. Resistor

26
Q

What is component 2 in figure T1?

A. Resistor

B. Transistor

C. Indicator lamp

D. Connector

A

B. Transistor

27
Q

What is component 3 in figure T1?

A. Resistor

B. Transistor

C. Lamp

D. Ground symbol

A

C. Lamp

28
Q

What is component 4 in figure T1?

A. Resistor

B. Transistor

C. Battery

D. Ground symbol

A

C. Battery

29
Q

What is component 6 in figure T2?

A. Resistor

B. Capacitor

C. Regulator IC

D. Transistor

A

B. Capacitor

30
Q

What is component 8 in figure T2?

A. Resistor

B. Inductor

C. Regulator IC

D. Light emitting diode

A

D. Light emitting diode

31
Q

What is component 9 in figure T2?

A. Variable capacitor

B. Variable inductor

C. Variable resistor

D. Variable transformer

A

C. Variable resistor

32
Q

What is component 4 in figure T2?

A. Variable inductor

B. Double-pole switch

C. Potentiometer

D. Transformer

A

D. Transformer

33
Q

What is component 3 in figure T3?

A. Connector

B. Meter

C. Variable capacitor

D. Variable inductor

A

D. Variable inductor

34
Q

What is component 4 in figure T3?

A. Antenna

B. Transmitter

C. Dummy load

D. Ground

A

A. Antenna

35
Q

What do the symbols on an electrical circuit schematic diagram represent?

A. Electrical components

B. Logic states

C. Digital codes

D. Traffic nodes

A

A. Electrical components

36
Q

Which of the following is accurately represented in electrical circuit schematic diagrams?

A. Wire lengths

B. Physical appearance of components

C. The way components are interconnected

D. All of these choices are correct

A

C. The way components are interconnected

37
Q

Which of the following devices or circuits changes an alternating current into a varying direct current signal?

A. Transformer

B. Rectifier

C. Amplifier

D. Reflector

A

B. Rectifier

38
Q

What best describes a relay?

A. A switch controlled by an electromagnet

B. A current controlled amplifier

C. An optical sensor

D. A pass transistor

A

A. A switch controlled by an electromagnet

39
Q

What type of switch is represented by component 3 in figure T2?

A. Single-pole single-throw

B. Single-pole double-throw

C. Double-pole single-throw

D. Double-pole double-throw

A

A. Single-pole single-throw

40
Q

Which of the following can be used to display signal strength on a numeric scale?

A. Potentiometer

B. Transistor

C. Meter

D. Relay

A

C. Meter

41
Q

What type of circuit controls the amount of voltage from a power supply?

A. Regulator

B. Oscillator

C. Filter

D. Phase inverter

A

A. Regulator

42
Q

What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?

A. Variable capacitor

B. Transformer

C. Transistor

D. Diode

A

B. Transformer

43
Q

Which of the following is commonly used as a visual indicator?

A. LED

B. FET

C. Zener diode

D. Bipolar transistor

A

A. LED

44
Q

Which of the following is used together with an inductor to make a tuned circuit?

A. Resistor

B. Zener diode

C. Potentiometer

D. Capacitor

A

D. Capacitor

45
Q

What is the name of a device that combines several semiconductors and other components into one package?

A. Transducer

B. Multi-pole relay

C. Integrated circuit

D. Transformer

A

C. Integrated circuit

46
Q

What is the function of component 2 in Figure T1?

A. Give off light when current flows through it

B. Supply electrical energy

C. Control the flow of current

D. Convert electrical energy into radio waves

A

C. Control the flow of current

47
Q

What is a simple resonant or tuned circuit?

A. An inductor and a capacitor connected in series or parallel to form a filter

B. A type of voltage regulator

C. A resistor circuit used for reducing standing wave ratio

D. A circuit designed to provide high fidelity audio

A

A. An inductor and a capacitor connected in series or parallel to form a filter

48
Q

Which of the following is a common reason to use shielded wire?

A. To decrease the resistance of DC power connections

B. To increase the current carrying capability of the wire

C. To prevent coupling of unwanted signals to or from the wire

D. To couple the wire to other signals

A

C. To prevent coupling of unwanted signals to or from the wire

Amateur Radio - Technician (10 decks)

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