Basic electronic

Question 0

A special type of resistor that changes its resistance in response to temperature changes is called a

Answer 0

Thermistor

Question 1

The flow of electrons in a circuit is measured in units called

Answer 1

Amperes

Question 2

AC current can be converted to DC by using a device called a

Answer 2

Diode

Question 3

The opposition to current flow in a circuit is measured in units called

Answer 3

Ohms

Question 4

One complete reversal of the AC current flow is called a

Answer 4

Cycle

Question 5

A special type of diode that lights up when current flows through it is the

Answer 5

LED

Question 6

Electric pressure in a circuit is measured in units called

Answer 6

Volts

Question 7

One metal that’s frequently used to make electrical wires because its such a good conductor is

Answer 7

Copper

Question 8

The two ends of a Diode are called

Answer 8

The Anode and the Cathode

Question 9

The Frequency of AC current is measured in units called

Answer 9

Hertz

Question 10

The internal circuits in most electronics equipment operate on AC current

Answer 10

False

Question 11

A high resistance device will allow less current to pass through it than a low resistance device

Answer 11

True

Question 12

Sensors are used to convert a measured physical quantity into an electrical signal

Answer 12

True

Question 13

Printed circuit boards are used to connect components in modern electronic equipment

Answer 13

True

Question 14

Blindness can result from unsafe behavior in the presence of high powered laser equipment

Answer 14

True

Question 15

Electrical shock isn’t a significant hazard to telecommunications technicians, since they never work around high voltages

Answer 15

False

Question 16

A safety procedure in which a circuit’s switch or breaker is locked and marked with the name of the technician working on the circuit is called a

Answer 16

Lock out, tag out

Question 17

Ring, watches, and other jewelry shouldn’t be worn when working on electronic equipment

Answer 17

True

Question 18

If an electrical fault causes the cover of a piece of equipment to conduct electricity, a technician who touched the cover would receive a (N)

Answer 18

Electrical shock

Question 19

It sufficient to switch off a piece of electrical equipment before servicing it. Unplugging the equipment isn’t generally a required safety practice

Answer 19

False

Question 20

Name three areas of communications that the new telecommunication Act of 1996 will affect

Answer 20

1- Telephone Service
2- Cable Television
3- The internet and online computer services

Question 21

Name three job titles that are commonly by electronics tecknician

Answer 21

1- Service Technicians
2- Central office Technicians
3- Industrial electronics Technicians

Question 22

Name three organizations where electronics technicians may be employeed

Answer 22

1- Equipment manufacturers
2- Equipment maintenance firms
3- Private companies that use a lot of electrical equipment

Question 23

Name 4 things that can damage sensitive electronic equipment

Answer 23

1- Electro magnetic fields
2- Moisture
3- Static electricity
4- Dirt and dusts particles

Question 24

When electric current is flowing in a circuit, if the voltage applied to the circuit is increased,

Answer 24

the current will increase

Question 25

Which of the following information sources will not be directly affected by the telecommunication acts of 1996? Telephone services, The internet, Newspaper publishing, Cable television

Answer 25

Newspaper publishing

Question 26

Porcelain, paper, glass and rubber are all examples of electrical

Answer 26

insulators

Question 27

A testing instrument that an electronics technician will connect to selected points inside a piece of electronic equipment and measure electrical values such as ohms, volts, and amperes is called

Answer 27

A multimeter

Question 28

What is rectification?

Answer 28

Rectification is the conversion of AC current to DC current.

Question 29

At a job interview, the most effective way to prove your proficiency to a prospective employer is to show that you have

Answer 29

Certification as an electronics technician

Question 30

Which one of the following letters is used as un abbreviation when representing a unit of electric current?

Answer 30

A

Question 31

Light-emitting diodes are used as

Answer 31

Indicators in circuits

Question 32

On a printed circuit board, electronic components will be mounted

Answer 32

from the substrate side of the board

Question 33

Resistance is measured in units called

Answer 33

Ohms

Question 34

When you see a lock out tag out card on a switch what should you do before take it out?

Answer 34

Operate this switch only after getting permission from the person who signed the tag

Question 35

A testing instrument that’s used to measure electrical signals in a circuit and display them as wave forms on a screen is called

Answer 35

an oscilloscope

Question 36

What is the first step in a lockout - and -tag procedure?

Answer 36

Shut off the electricity to the machine at the breaker

Question 37

An electronics technician who enjoys working “at the bench” would most likely want to work

Answer 37

For a manufacturer.