M 055 Review

M 055 Review

Unit 1

What do we call a thin piece of silicon containing a complete, miniaturized electronic circuit?

A chip.

2. What do we call flat surfaces that meet in sharp edges or at

rounded or curved surfaces, as a grain of salt or sugar?

Crystals.

3. What do we call the condition that exists in a diode when the

cathode is negative with respect to the anode?

Forward bias.

4. What do we call a part of an electronic device that acts as a

turn-on switch in a silicon controlled rectifier?

A gate.

5. What do we call a combination of miniaturized circuit elements contained within a single silicon

chip?

An integrated circuit.

6. What do we call an electronic device that joins N-type and P-

type material?

A junction diode.

7. What do we call something that is made in a small or

compact form?

Miniaturized.

8. What do we call a circuit in which wires have been replaced by conductive strips painted or

printed on an insulated surface?

A printed circuit.

9. What do we call the condition that exists in a diode when the cathode is made more positive than the anode and no current

will flow?

Reverse bias.

10. What is a prefix meaning half, partly, or not full.

Semi-

11. What do we call a material which, under certain conditions,

will act as a conductor, and under other conditions, as an insulator?

A semiconductor.

12. What do we call an orbital path of electrons around the

nucleus of an atom?

A shell.

13. What do we call a three-function semiconductor that

switches rapidly from an open state to a conducting state when

an appropriate signal is applied at the gate terminal?

A silicon-controlled rectifier.

14. What do we call circuits and components that are

semiconductors and use solids instead of gases, vacuums, or

filaments to transmit electricity?

Solid state.

15. What do we call something that is not likely to change; firm.

Stable.

16. What do we call an electron in the outer shell of an atom?

A valence electron.

17. What do we call the outer shell of an atom?

A valence shell.

Unit 2

1. What do we call the changing of the amplitude of a carrier

wave in the same manner as the changing of amplitude of

an audio signal?

Amplitude modulation.

2. What do we call the part of a receiver or transmitter that

receives and transmits radio waves?

An antenna.

3. What do we call frequencies that can be heard by the human

ear ranging from 20 Hertz to 20,000 Hertz?

Audio frequencies.

4. What do we call an electrical signal added to a carrier wave, whose frequency is in the audio

frequency range?

Audio signal.

5. What do we call the continuous AC wave that can be modulated

to carry sound?

A carrier wave.

6. What do we call the portion of a ground wave that travels

directly through space from a transmitting antenna to a

receiving antenna?

Direct wave.

7. What do we call the changing of frequency of a carrier wave at

a rate equal to the change in frequency of an audio signal?

Frequency modulation.

8. What do we call a radio wave that travels near the surface of

the earth?

A ground wave.

9. What do we call the layers of ionized air located in the

atmosphere beginning about 25 miles above the surface of the

earth?

The ionosphere.

10. What do we call the transmission of a radio signal

from a transmitting antenna to a receiving antenna, both of which

are normally visible to each other?

A line-of-sight transmission.

11. What do we call a radio wave in the high frequency range of

1,000 MHz or higher?

A microwave.

12. What do we call the changing of a carrier wave to a radio wave,

by adding an audio signal?

Modulation.

13. What do we call “to pass into”, or “through”?

To penetrate.

14. What do we call it when we move electromagnetic or sound waves through space or some

other medium?

To propagate.

15. What do we call it to send or spread out from a center point?

To radiate.

16. What do we call frequencies that range from 3,000 Hertz to

300, 000, 000, 000 Hertz?

Radio frequencies.

17. What do we call that part of a radio system that accepts radio

frequency energy from an antenna or other source and

converts it into meaningful form?

A receiver.

18. What do we call the portion of a ground wave that travels from a transmitting antenna to the earth

and is reflected upward to a receiving antenna?

Reflected wave.

19. What do we call “to bend back”?

To refract

20. What do we call the area in back of an obstruction that blocks

radio waves?

A shadow zone.

21. What do we call the distance between a transmitting antenna

and the point where the first usable refracted sky wave

returns to the earth?

Skip distance.

22. What do we call the area between the point where the

ground waves are not received and the point where the first sky

wave returns to earth?

Skip zone.

23. What do we call a radio wave that travels directly from the transmitting antenna to the

ionosphere?

A sky wave.

24. What do we call the portion of ground waves that travels in

contact with the surface of the earth?

A surface wave.

25. What do we call that part of a radio system in which the radio

frequency currents are generated, amplified, and

modulated?

A transmitter.

26. What do we call a device for tuning?

A tuner.

27. What do we call the frequency band that has a range

from 300MHz to 3 GHz?

Ultra high frequency.

28. What do we call the frequency band that has a range

from 30 MHz to 300MHz?

Very high frequency.

Unit 3

1. What do we call the information related to a

measurement in the form of a varying value?

Analog data.

2. What do we call a numbering system based on two digits, 0

and 1?

A binary system.

3. What do we can an individual mark, sign, or symbol that

combines to represent information?

A character.

4. What do we call a panel containing instruments, switches,

and indicator lights?

A console.

5. What do we call a central location for the storing of data

about specific subjects?

A data bank.

6. What do we call the process of rapidly transferring digital data

from one place to another?

Data communications.

7. What do we call a diagram showing steps or procedures in a

specific operation to be performed?

A flow chart.

8. What do we call the electronic connecting device that ties two or more electronic parts together?

An interface.

9. What do we call the part of a typewriter or panel that contains

the keys that are pushed to produce digital symbols?

A keyboard.

10. What do we call a device for storing data in a computer?

A memory unit.

11. What do we call something that is external, or not part of the

main unit, or not in the central area?

Peripheral.

12. What do we call the main part of the computer that takes input data and creates output data by

processing the data?

The processor.

13. What do we call a series of instructions to guide the computer operations?

A program.

14. What do we call the individual who writes a program?

A programmer.

15. What do we call “to obtain, get, or take”?

To retrieve.

16. What do we call it when we carefully study or select

information from a large amount of data?

To screen.

17. What do we call the operation of doing something in a logical

and orderly manner?

Step-by-step.

18. What do we call the device where data enters or leaves a system, or where something

stops?

Terminal.

Unit 4

1. What do we call a metallic substance formed by mixing

two or more metallic elements?

An alloy.

2. What do we call a colorless, odorless gas in the

atmosphere; a gas often used in fire extinguishers?

Carbon dioxide.

3. What do we call something that is capable of catching fire

and burning?

Combustible.

4. What do we call a portable device containing chemicals that

can be used on a fire to put it out?

An extinguisher.

5. What do we call something capable of being set on fire

easily?

Flammable.

6. What do we call a thick white mass of bubbles containing

chemicals that can be used to put out fires?

A foam.

7. What do we call gas or smoke vapors?

Fumes.

8. What do we call something that is capable of being fused or

melted?

Fusible.

9. What do we call “to burn or set on fire”?

To ignite.

10. What do we call a light, silver, silver-white metallic element?

Magnesium.

11. What do we call a type of soldering iron with a low wattage rating and interchangeable tips?

A pencil iron.

12. What do we call “to place an announcement or notice in a

public place”?

To post.

13. What do we call a prefix meaning “again”?

Re-

14. What do we call a device made of wood and rubber used to

discharge capacitance before performing maintenance?

A shorting stick.

15. What do we call “to cause fire to go out or die down by covering

it so oxygen is cut off”?

To smother.

16. What do we call a light soft, silver-white metallic element?

Sodium.

17. What do we call any metal or metallic alloy that will join metal surfaces or parts when melted?

Solder.

18. What do we call “to join, fasten, or repair with solder”?

To solder.

19. What do we call a type of soldering instrument consisting of a transformer power supply and a

resistance tip?

A soldering gun.

20. What do we call an electrical device that is used to supply heat

from 20 to 500 watts to melt solder?

A soldering iron.

21. What do we call a joint or union made by splicing?

A splice.

22. What do we call “to join together by using tape or solder”?

To splice.

23. What do we call “to cover with a coat of solder”?

To tin.

24. What do we call an extreme or outermost point or end of

something?

A tip.

25. What do we call something that is relating to or caused by

poison?

Toxic.