Technician Licensing ClassTechnician Licensing Classecee.colorado.edu/~mathys/ecen2420/pdf/TechnicianLicense/T6slid… · 1 2 4 Figure T1 – T6D11 A common use of coaxial cable is

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Technician Licensing ClassTechnician Licensing Class

Supplement T6

Electrical/Electronic ComponentsElectrical/Electronic Components

4 Exam Questions, 4 Groups

Amateur Radio Technician ClassEl t 2 C P t tiElement 2 Course Presentation

ELEMENT 2 SUB-ELEMENTS

– T1 - FCC Rules, descriptions and definitions for the amateur radio service, operator and station license responsibilities.T2 – Operating Procedures– T2 – Operating Procedures

– T3 – Radio wave characteristics, radio and electromagnetic properties, propagation modes

– T4 – Amateur radio practices and station set up– T5 – Electrical principles, math for electronics, electronic principles,T5 Electrical principles, math for electronics, electronic principles,

Ohm’s LawT6 – Electrical components, semiconductors, circuit diagrams, component functions

– T7 – Station equipment, common transmitter and receiver problems, t t d t bl h ti b i i d t tiantenna measurements and troubleshooting, basic repair and testing

– T8 – Modulation modes, amateur satellite operation, operating activities, non-voice communications

– T9 – Antennas, feedlines– T0 – AC power circuits antenna installation RF hazards

2

– T0 – AC power circuits, antenna installation, RF hazards

T6A: Electrical components; fixed and variable resistors, capacitors, and inductors; fuses, switches, batteriescapacitors, and inductors; fuses, switches, batteries

– T6A1 A resistor is the electrical component used to oppose the flow of current in a DC circuit.

– T6A2 The potentiometer is the type of component often used as an adjustable volume control.

Schematic Symbol

– T6A3 Resistance is the electrical parameter controlled by a potentiometer.

Schematic Symbol

3

pote t o ete

T6A: Electrical components; fixed and variable resistors, capacitors and inductors; fuses switches batteriescapacitors, and inductors; fuses, switches, batteries

T6A4 A capacitor is the electrical component that stores energy in an l t i fi ldelectric field.

Typical construction and schematic symbol for capacitors.

Various fixed capacitors

44

T6A: Electrical components; fixed and variable resistors, capacitors and inductors; fuses switches batteriescapacitors, and inductors; fuses, switches, batteries

– T6A5 The capacitor is the type of electrical component consisting of two or more conductive surfaces separated by an insulator.

» Paper, mica, air…

An ind ctor is the t pe of electrical component that stores– T6A6 An inductor is the type of electrical component that stores energy in a magnetic field.

– T6A7 The inductor is an electrical component usually composed of a coil of wire.

Schematic Symbol

55

T6A: Electrical components; fixed and variable resistors, capacitors, and inductors; fuses, switches, batteriesp , ; , ,

– T6A8 A switch is an electrical component that is used to connect or di t l t i l i itdisconnect electrical circuits.

Toggle Switch Slide Switch Rocker Switch

Schematic Symbol

– T6A9 A fuse is an electrical component used to protect other circuit components from current overloads.

Schematic Symbol

66

Slow Blow Fuse

Automobile Fuse

Schematic Symbol

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T6A: Electrical components; fixed and variable resistors, capacitors, and inductors; fuses, switches, batteriesp , ; , ,

– T6A10 1 2 volts is the nominal voltage of a fully charged nickel-T6A10 1.2 volts is the nominal voltage of a fully charged nickelcadmium cell.

Small and compact just like Ham Radio hand helds.

Ni-Cad rechargeable 1 25 volt batteries in a

Rubber duck antenna

T6A11 A carbon zinc battery type is not rechargeable

1.25 volt batteries in a marine hand held.

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– T6A11 A carbon-zinc battery type is not rechargeable.

T6B: Semiconductors; basic principles of diodes and transistors

– T6B1 Transistors are a class of electronic components capable f fof using a voltage or current signal to control current flow.

Rows of Transistors

– T6B2 A diode is an electronic component that allows current to flow in only one direction.

– Rectification is process of changing AC to pulsating DC

– Diode stops current flow when it tries to go in the reverse direction

8


– T6B3 A transistor is a component that can be used as an electronic switch or amplifierswitch or amplifier.

The bi ola j ctio t a i to i a co o e t that i ade of

Small Signal Transistors Schematic Symbol

– T6B4 The bipolar junction transistor is a component that is made of three layers of semiconductor material.

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T6B:Semiconductors; basic principles of diodes and transistors

– T6B5 The transistor is an electronic components that can amplify signals.

– T6B6 A semiconductor diode’s cathode lead is usually identified with a stripe.

T6B7 The abbreviation "LED" stands for Light Emitting Diode– T6B7 The abbreviation LED stands for Light Emitting Diode.

1010


– T6B8 The abbreviation "FET" stands for Field Effect Transistor.

– T6B9 Anode and cathode are the names of the two electrodes of a diode.

11Semiconductor Diode Zener Diode


– T6B10 The bipolar transistor semiconductor component has an emitter electrodeemitter electrode.

Emitter Electrode

Gate Electrode

– T6B11 The field effect transistor semiconductor component has a

Electrode

pgate electrode.

– T6B12 Gain is the term that describes a transistor's ability to amplify i l

12

a signal.

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T6C: Circuit diagrams; schematic symbols

– T6C1 Schematic symbols is the name for standardizedT6C1 Schematic symbols is the name for standardized representations of components in an electrical wiring diagram.

1313


T6C2 Component 1 in figure T1 is a resistorT6C2 Component 1 in figure T1 is a resistor.

33

12

41

2

4

Resistor

44

55Figure T1

1414

g


– T6C3 Component 2 in figure T1 is a transistor.

33

2

3

2

3Transistor

14

14 Figure T1

55

1515


– T6C4 Component 3 in figure T1 is a lampT6C4 Component 3 in figure T1 is a lamp.

Lamp

12

3

12

3

14

14

55 Figure T1

1616


– T6C5 Component 4 in figure T1 is a batteryT6C5 Component 4 in figure T1 is a battery.

2

3

2

3Battery

12

41

2

4

55Figure T1

1717

Figure T1


– T6C6 Component 6 in figure T2 is a capacitorT6C6 Component 6 in figure T2 is a capacitor.

2 53 92 53 95

4

7

95

4

7

9

16

7

8

101

6

7

8

10

Figure T2

Capacitor

1818

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– T6C7 Component 8 in figure T2 is a light emitting diodeT6C7 Component 8 in figure T2 is a light emitting diode.

2 53 92 53 95

4

7

95

4

7

9

16

7

8

101

6

7

8

10

Figure T2

1919

Light Emitting Diode


– T6C8 Component 9 in figure T2 is a variable resistorT6C8 Component 9 in figure T2 is a variable resistor.

2 53 92 53 9

Variable Resistor

5

4

7

95

4

7

9

16

7

8

101

6

7

8

10

Figure T2

2020


• T6C9 Component 4 in figure T2 is a transformer• T6C9 Component 4 in figure T2 is a transformer.

2 53 92 53 95

4

7

95

4

7

9

16

7

8

101

6

7

8

10

Figure T2

2121

Transformer


– T6C10 Component 3 in figure T3 is a variable inductorT6C10 Component 3 in figure T3 is a variable inductor.

44

1

2

1

2

1

3

1

333

Figure T3

Variable Inductor

2222

Figure T3


– T6C11 Component 4 in figure T3 is an antenna.

44 Antenna

1

2

1

2

1

3

1

333

Figure T3

2323

Figure T3


T6C12 The symbols on an– T6C12 The symbols on an electrical circuit schematic diagram represent electrical components.

– T6C13 The way electricalT6C13 The way electrical components are interconnected accurately represent electrical circuit schematic diagrams.

24

schematic diagrams.

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T6D: Component functions

– T6D1 Rectifier devices or circuits change an alternating current intoT6D1 Rectifier devices or circuits change an alternating current into a varying direct current signal.

Power supply contains: Transformer, rectifier (diodes), filter choke, capacitors, and regulators. (d odes), te c o e, capac to s, a d egu ato s

This circuitry converts the house 120 VAC to varying DC and that is filtered and smoothed out to produce DC current that we need for our ham radio equipment.

2525

q p


T6D2 A switch controlled by an electromagnet best describes a relay.

Relays

ElectromagnetsElectromagnets

2626


– T6D3 A single-pole single-throw switch is represented by item 3 inT6D3 A single pole single throw switch is represented by item 3 in figure T2.

2 53 92 53 9

Single-Pole Single-Throw Switch

5

4

7

95

4

7

9

16

7

8

101

6

7

8

10

Figure T2

2727


– T6D4 A meter can be used to display signal strength on a numeric scale.

S MeterS-Meter

2828Icom 7700


– T6D5 A regulator is a type of circuit that controls the g ypamount of voltage from a power supply.

Voltage Regulators

– T6D6 A transformer is a component commonly used to change 120V AC house current to a lower AC voltage for other uses.

– T6D7 An LED is commonly used as a visual indicator. Voltage Transformer

29An array of LEDs and resistors mounted on a printed circuit board


– T6D8 A capacitor is used together with an inductor to make a tuned circuitcircuit.

Capacitor (variable)

Inductor

Tank Circuit or Tuned Circuit

Inductor

Tank Circuit Schematic

– T6D9 Integrated circuit is the name of a device that combines several semiconductors and other components into one package.

Tank Circuit or Tuned Circuit Tank Circuit Schematic

3030

several semiconductors and other components into one package.

Large-scale integrated circuit chip

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– T6D10 To control the flow of current is the function of component 2 in Figure T1in Figure T1.

33Component 2

12

41

2

4

Figure T1

– T6D11 A common use of coaxial cable is to carry RF signals between a radio and antenna

55

3131

between a radio and antenna.

Element 2 Technician Class Question Pool

T6Electrical components, semiconductors, pcircuit diagrams, component functions

[4 Exam Questions – 4 Groups]

Valid July 1 2010Valid July 1, 2010

Through

June 30, 2014

T6A01 What electrical component is used to

oppose the flow of current in a DC circuit?ppA. InductorB. ResistorC. VoltmeterD. Transformer

33

T6A02 What type of component is often used as anT6A02 What type of component is often used as an adjustable volume control?

A. Fixed resistorB. Power resistorC. PotentiometerD. Transformer

34

T6A03 What electrical parameter is controlled byT6A03 What electrical parameter is controlled by a potentiometer?

A. InductanceB. ResistanceC. CapacitanceD. Field strengthg

35

T6A04 What electrical component stores energyT6A04 What electrical component stores energy in an electric field?

A. ResistorB. CapacitorpC. InductorD. Diode

36

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T6A05 What type of electrical component consistsT6A05 What type of electrical component consists of two or more conductive surfaces

separated by an insulator?

A. ResistorB. PotentiometerC. OscillatorD. Capacitorp

37

T6A06 What type of electrical component storesT6A06 What type of electrical component stores energy in a magnetic field?

A. ResistorB. CapacitorpC. InductorD. Diode

38

T6A07 What electrical component is usuallyT6A07 What electrical component is usually composed of a coil of wire?

A. SwitchB. CapacitorpC. DiodeD. Inductor

39

T6A08 What electrical component is used to pconnect or disconnect electrical circuits?

A. Zener diodeB. SwitchC. InductorD. Variable resistor

40

T6A09 What electrical component is used toT6A09 What electrical component is used to protect other circuit components from

current overloads?

A. FuseB. CapacitorpC. ShieldD. Inductor

41

T6A10 What is the nominal voltage of a fullyT6A10 What is the nominal voltage of a fully charged nickel-cadmium cell?

A. 1.0 voltsB. 1.2 voltsC. 1.5 voltsD. 2.2 volts

42

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T6A11 Which battery type is not rechargeable?

A. Nickel-cadmiumB Carbon-zincB. Carbon zincC. Lead-acidD Lithi iD. Lithium-ion

43

T6B01 What class of electronic components isT6B01 What class of electronic components is capable of using a voltage or current

signal to control current flow?

A. CapacitorsB. InductorsC. ResistorsD. Transistors

44

T6B02 What electronic component allows current pto flow in only one direction?

A. ResistorB. FuseC. DiodeD. Driven element

45

T6B03 Which of these components can be used asT6B03 Which of these components can be used as an electronic switch or amplifier?

A. OscillatorB. PotentiometerC. TransistorD. Voltmeter

46

T6B04 Which of these components is made of pthree layers of semiconductor material?

A. AlternatorB. Bipolar junction transistorp jC. TriodeD. Pentagrid converterg

47

T6B05 Which of the following electronicT6B05 Which of the following electronic components can amplify signals?

A. TransistorB. Variable resistorC. Electrolytic capacitorD. Multi-cell batteryy

48

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T6B06 How is a semiconductor diode’s cathodeT6B06 How is a semiconductor diode s cathode lead usually identified?

A. With the word “cathode”B. With a stripepC. With the letter “C”D. All of these choices are correct

49

T6B07 What does the abbreviation "LED" standT6B07 What does the abbreviation LED stand for?

A. Low Emission DiodeB. Light Emitting Diodeg gC. Liquid Emission DetectorD. Long Echo Delayg y

50

T6B08 What does the abbreviation "FET" standT6B08 What does the abbreviation FET stand for?

A. Field Effect TransistorB. Fast Electron TransistorC. Free Electron TransitionD. Field Emission Thickness

51

T6B09 What are the names of the two electrodesT6B09 What are the names of the two electrodes of a diode?

A. Plus and minusB. Source and drainC. Anode and cathodeD. Gate and base

52

T6B10 Which semiconductor component has anT6B10 Which semiconductor component has an emitter electrode?

A. Bipolar transistorB. Field effect transistorC. Silicon diodeD. Bridge rectifierg

53

T6B11 Which semiconductor component has aT6B11 Which semiconductor component has a gate electrode?

A. Bipolar transistorB. Field effect transistorC. Silicon diodeD. Bridge rectifierg

54

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T6B12 What is the term that describes aT6B12 What is the term that describes a transistor's ability to amplify a signal?

A. GainB. Forward resistanceC. Forward voltage dropD. On resistance

55

T6C01 What is the name for standardizedT6C01 What is the name for standardized representations of components in an

electrical wiring diagram?

A. Electrical depictionsB. Grey sketchyC. Schematic symbolsD. Component calloutsp

56

T6C02 What is component 1 in figure T1?

A. ResistorB. TransistorC. BatteryD. connector

57


A. ResistorB. TransistorC. Indicator lampD. Connector

58


A. ResistorB. TransistorC. LampD. Ground symboly

59


A. ResistorB. TransistorC. BatteryD. Ground symboly

60

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A ResistorA. ResistorB. CapacitorC R l t ICC. Regulator ICD. Transistor

61


A ResistorA. ResistorB. InductorC Regulator ICC. Regulator ICD. Light emitting diode

62


A Variable capacitorA. Variable capacitorB. Variable inductorC Variable resistorC. Variable resistorD. Variable transformer

63


A. Variable inductorB. Double-pole switchC. PotentiometerC. PotentiometerD. Transformer

64


A. ConnectorB. MeterC. Variable capacitorD. Variable inductor

65


A. AntennaB. TransmitterC. Dummy loadD. Ground

66

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T6C12 What do the symbols on an electricalT6C12 What do the symbols on an electrical circuit schematic diagram represent?

A. Electrical componentsB. Logic statesgC. Digital codesD. Traffic nodes

67

T6C13 Which of the following is accuratelyT6C13 Which of the following is accurately represented in electrical circuit schematic

diagrams?

A. Wire lengthsB. Physical appearance of componentsC. The way components are interconnectedD. All of these choices

68

T6D01 Which of the following devices or circuitsT6D01 Which of the following devices or circuits changes an alternating current into a

varying direct current signal?

A. TransformerB. RectifierC. AmplifierD. Reflector

69

T6D02 What best describes a relay?T6D02 What best describes a relay?

A. A switch controlled by an electromagnetB. A current controlled amplifierpC. An optical sensorD. A pass transistorp

70

T6D03 What type of switch is represented by itemT6D03 What type of switch is represented by item 3 in figure T2?

A Single-pole single-throwA. Single pole single throwB. Single-pole double-throwC Double-pole single-throwC. Double-pole single-throwD. Double-pole double-throw

71

T6D04 Which of the following can be used to gdisplay signal strength on a numeric scale?

A. PotentiometerB. TransistorC. MeterD. Relayy

72

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T6D05 What type of circuit controls the amount ofT6D05 What type of circuit controls the amount of voltage from a power supply?

A. RegulatorB. OscillatorC. FilterD. Phase inverter

73

T6D06 What component is commonly used toT6D06 What component is commonly used to change 120V AC house current to a lower

AC voltage for other uses?

A. Variable capacitorB. TransformerC. TransistorD. Diode

74

T6D07 Which of the following is commonly usedT6D07 Which of the following is commonly used as a visual indicator?

A. LEDB. FETC. Zener diodeD. Bipolar transistorp

75

T6D08 Which of the following is used together withT6D08 Which of the following is used together with an inductor to make a tuned circuit?

A. ResistorB. Zener diodeC. PotentiometerD. Capacitorp

76

T6D09 What is the name of a device that combinesT6D09 What is the name of a device that combines several semiconductors and other

components into one package?

A. TransducerB. Multi-pole relayp yC. Integrated circuitD. Transformer

77

T6D10 What is the function of component 2 inT6D10 What is the function of component 2 in Figure T1?

A Give off light whenA. Give off light when current flows through it

B. Supply electricalB. Supply electrical energy

C. Control the flow of current

D. Convert electrical energy into radio waves

78

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T6D11 Which of the following is a common use f i l bl ?of coaxial cable?

A. Carry dc power from a vehicle battery to aA. Carry dc power from a vehicle battery to a mobile radio

B. Carry RF signals between a radio and y gantenna

C. Secure masts, tubing, and other cylindrical g yobjects on towers

D. Connect data signals from a TNC to a computer

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Documents

Technician Licensing ClassTechnician Licensing Classecee.colorado.edu/~mathys/ecen2420/pdf/TechnicianLicense/T6slid… · 1 2 4 Figure T1 – T6D11 A common use of coaxial cable is