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Ham Radio Technician > Technician Test T6 and T7 questions > Flashcards

Technician Test T6 and T7 questions Flashcards

1
Q

What electrical component opposes the flow of current in a DC circuit? T6A01

A

Resistor
3-8

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2
Q

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

A

Potentiometer
3-8

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3
Q

What electrical parameter is controlled by a potentiometer? T6A03

A

Resistance
3-8

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4
Q

What electrical component stores energy in an electric field? T6A04

A

Capacitor
3-8

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5
Q

What type of electrical component consists of conductive surfaces separated by an insulator? T6A05

A

Capacitor
3-8

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6
Q

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

A

Inductor
3-8

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7
Q

What electrical component is typically constructed as a coil of wire? T6A07

A

Inductor
3-8

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8
Q

What is the function of an SPDT switch? T6A08

A

Single Pole Double Throw
A single circuit is switched between one of two other circuits
3-13

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9
Q

What electrical component is used to protect other circuit components from current overloads? T6A09

A

Fuse
3-12

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10
Q

Which of the following battery chemistries is rechargeable? T6A10

A

All these choices are correct
-Nickel-metal hydride
-Lithium-ion
-Lead-acid
5-17

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11
Q

Which of the following battery chemistries is not rechargeable? T6A11

A

Carbon-zinc
5-17

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12
Q

What type of switch is represented by component 3 in figure T-2?

A

Single-pole single-throw
3-13

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13
Q

Which is true about forward voltage drop in a diode? T6B01

A

It is lower in some diode types than in others
3-10

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14
Q

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

A

Diode
3-10

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15
Q

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

A

Transistor
3-10

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16
Q

Which of the following components can consist of three regions of semiconductor material? T6B04

A

Transistor
3-10

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17
Q

What type of transistor has a gate, drain, and source? T6B05

A

Field-effect
3-10

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18
Q

How is the cathode lead of a semiconductor diode often marked on the package? T6B06

A

With a stripe
3-10

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19
Q

What causes a light-emitting diode (LED) to emit light? T6B07

A

Forward current
3-10

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20
Q

What does the abbreviation FET stand for? T6B08

A

Field Effect Transistor
3-10

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21
Q

What are the names for the electrodes of a diode? T6B09

A

Anode and cathode
3-10

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22
Q

Which of the following can provide power gain? T6B10

A

Transistor
3-11

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23
Q

What is the term that describes a device’s ability to amplify a signal? T6B11

A

Gain
3-11

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24
Q

What are the names of the electrodes of a bipolar junction transistor? T6B12

A

Emitter, base, collector
3-11

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25
What is the nave of an electrical wiring diagram that uses standard component symbols? T6C01
Schematic 3-14
26
What is component 1 in figure T-1? T6C02
Resistor 3-14
27
What is component 2 in figure T-1? T6C03
Transistor 3-14
28
What is component 3 in figure T-1? T6C04
Lamp 3-14
29
What is component 4 in figure T-1? T6C05
Battery 3-14
30
What is component 6 in figure T-2? T6C06
Capacitor 3-14
31
What is component 8 in figure T-2? T6C07
Light emitting diode 3-14
32
What is component 9 in figure T-2? T6C08
Transformer 3-14
33
What is component 4 in figure T-2? T6C09
Transformer 3-14
34
What is component 3 in figure T-3? T6C10
Variable inductor 3-14
35
What is component 4 in figure T-3? T6C11
Antennae 3-14
36
Which of the following is accurately represented in electrical schematics? T6C12
Component connections 3-14
37
Which of the following devices or circuits changes an alternating current into a varying or direct current signal? T6D01
Rectifier 3-11
38
What is a relay? T6D02
An electrically-controlled switch 3-13
39
Which of the following is a reason to use shielded wire? T6D03
To prevent coupling of unwanted signals to or from the wire 9-9
40
Which of the following displays an electrical quantity as a numeric value? T6D04
Meter 3-14
41
What type of circuit controls the amount of voltage from a power supply? T6D05
Regulator 5-16
42
What component changes 120 V AC power to a lower AC voltage for other uses? T6D06
Transformer 3-8
43
Which of the following is commonly used as a visual indicator? T6D07
LED 3-11
44
Which of the following is combined with an inductor to make a resonant circuit? T6D08
Capacitor 3-10
45
What is the name of a device that combines several semiconductors and other components into one package? T6D09
Integrated circuit 3-11
46
What is the function of component 2 in figure T-1? T6D10
Control the flow of current 3-11
47
Which of the following is a resonant or tuned circuit? T6D11
An inductor and a capacitor in series or parallel 3-10
48
Which term describes the ability of a receiver to detect the presence of a signal? T7A01
Sensitivity 5-9
49
What is a transceiver? T7A02
A device that combines a receiver and transmitter 2-7
50
Which of the following is used to convert a signal from one frequency to another? T7A03
Mixer 3-18
51
Which term describes the ability of a receiver to discriminate between multiple signals? T7A04
Selectivity 5-9
52
What is the name of a circuit that generates a signal at a specific frequency? T7A05
Oscillator 3-17
53
What device converts the RF input and output of a transceiver to another band? T7A06
Transverter 5-11
54
What is the function of a transceiver's PTT input? T7A07
Switches transceiver from receive to transmit when grounded 5-7
55
Which of the following describes combining speech with an RF carrier signal? T7A08
Modulation 3-17
56
What is the function of the SSB/CW-FM switch on a VHF power amplifier? T7A09
Set the amplifier for proper operation in the selected mode 5-10
57
What device increases the transmitted output power from a transceiver? T7A10
An RF power amplifier 5-10
58
Where is an RF preamplifier installed? T7A11
Between the antenna and receiver 5-9
59
What can you do if you are told your FM handheld or mobile transceiver is over-deviating? T7B01
Talk farther away from the microphone 5-8
60
What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally? T7B02
The receiver is unable to reject strong signals outside the AM or FM band 9-8
61
Which of the following can cause radio frequency interference? T7B03
All these choices are correct: -Fundamental overload -Harmonics -Spurious emissions 9-8
62
Which of the following could you use to cure distorted audio caused by RF current on the shield f a microphone cable? T7B04
Ferrite choke 9-7
63
How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated? T7B05
Block the amateur signal with a filter at the antenna input of the affected receiver 9-8
64
Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception? T7B06
Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
65
Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station? T7B07
Installing a band-reject filter 9-8
66
What should you do if something in a neighbor's home is causing harmful interference to your amateur station? T7B08
All these choices are correct -Work with your neighbor to identify the offending device -Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference Make sure your station meets the standards of good amateur practice 9-10
67
What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission? T7B09
Be sure all TV feed line coaxial connectors are installed properly 9-10
68
What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible? T7B10
All these choices are correct -Your transmitter is slightly off frequency -Your batteries are running low -You are in a bad location 6-4
69
What is a system of RF feedback in a transmitter or transceiver? T7B11
Reports of garbled, distorted, or unintelligible voice transmissions 9-6
70
What is the primary purpose of a dummy load? T7C01
To prevent transmitting signals over the air when making tests 5-7
71
Which of the following is used to determine if an antenna is resonant at the desired operating frequency? T7C02
An antenna analyzer 4-18
72
What does a dummy load consist of? T7C03
A non-inductive resistor mounted on a heat sink 5-7
73
What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line? T7C04
1:1 4-10
74
Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level? T7C05
To protect the output amplifier transistors 4-10
75
What does an SWR reading of 4:1 indicate? T7C06
Impedance mismatch 4-10
76
What happens to power lost in a feed line? T7C07
It is converted into heat 4-9
77
Which instrument can be used to determine SWR? T7C08
Directional wattmeter 4-18
78
Which of the following causes failure of coaxial cables? T7C09
Moisture contamination 4-17
79
Why should the outer jacket of coaxial cable be resistant to ultraviolet light? T7C10
Ultraviolet light can damage the jacket and allow water to enter the cable 4-17
80
What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types? T7C11
It requires special techniques to prevent moisture in the cable 4-17
81
Which instrument would you use to measure electric potential? T7D01
A voltmeter 3-1
82
How is a voltmeter connected to a component to measure applied voltage? T7D02
In parallel 3-2
83
When configured to measure current, how is a multimeter connected to a component? T7D03
In series 3-2
84
Which instrument is used to measure electric current? T7D04
An ammeter 3-1
85
Which of the following can damage a multimeter? T7D06
Attempting to measure voltage when using the resistance setting 3-4
86
Which of the following measurements are made using a multimeter? T7D07
Voltage and resistance 3-4
87
Which of the following types of solder should not be sued for radio and electronic applications? T7D08
Acid-core solder 4-17
88
What is the characteristic appearance of a cold tin-lead solder joint? T7D09
A rough or lumpy surface 4-17
89
What reading indicates that an ohmmeter is connected across a large, discharged capacitor? T7D10
Increasing resistance with time 3-4
90
Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter? T7D11
Ensure that the circuit is not powered 3-4

Ham Radio Technician (6 decks)

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