Electronics

Question 1

What does the abbreviation DC stand for?

Answer 1

Direct current

Question 1

Which of the following has the least resistance?
A. Iron
B. Rubber.
C. Copper.
D. Wood

Answer 1

C. Copper.

Question 2

What increases or decreases the voltage in a system without the need for an electrical connection?

Answer 2

Transformer

Question 3

A device used to amplify a signal is called a?

Answer 3

Transistor

Question 4

What process changes incoming alternating current (AC) To direct current (DC)?

Answer 4

Rectification

Question 5

The amount of electrical power is measured in units called?

Answer 5

Watts

Question 6

What does an arrow over the resistor symbol represent?

Answer 6

A variable

Question 7

Components designed to store electrical charge are called?

Answer 7

Capacitors

Question 8

In what direction does current go in electron flow notation?

Answer 8

From negative to positive

Question 9

In an electronic circuit diagram, the symbol used to show wires connecting is a?

Answer 9

Dot

Question 10

What occurs when a wire is wrapped around an iron core and a current Is sent through the wire?

Answer 10

Magnetic effect

Question 11

What is the term for a magnetic effect that are perpendicular to the conductor and parallel to each other?

Answer 11

Lines of force

Question 12

What is commonly used in a circuit in which the flow of electricity needs to be regulated for the device to run properly?

Answer 12

Resistance

Question 13

What color wire from the following choices is not considered a hot wire?
A. Red.
B. Black.
C. Gray.
D. Blue.

Answer 13

C. Gray.

Question 14

Ohms law states?

Answer 14

Voltage = current x resistance.

Question 15

A resistors’s first three color bands are brown, black, and red. What is its value?

Answer 15

1000 ohms

Question 16

In the US, all metal equipment, electrical or not, connect to a swimming pool must be?

Answer 16

Bonded together

Question 17

Voltage can also be expressed as?

Answer 17

Electrical potential difference

Question 18

Newer cell phones contain a removable memory card, which is often called a?

Answer 18

Sim card

Question 19

Made from a Variety of materials, such as carbon, this inhabits to flow of current?

Answer 19

Resistor

• Because it resists or inhabit the flow of current

Question 20

This is a type of semiconductor that only allows current to flow in One Direction. It is usually used to rectify AC signals.( conversion to DC.)

Answer 20

Diode

Question 21

Radar can operate at frequencies as high as

Answer 21

100,000 MHz

Question 22

What do a AC and DC stand for in the electrical field?

Answer 22

Alternating current and direct current

Question 23

Changing AC to DC is called what?

Answer 23

Rectification

Question 24

A 5000 BTU air conditioner can efficiently cool up to 150 ft.² or a 10-foot-x-15-foot room. What does BTU stand for?

Answer 24

British thermal unit

Question 25

Definition of current?

Answer 25

The presence of electron flow

Question 26

A device that transforms energy from one form to another is called?

Answer 26

Transducer

Question 27

Which one of the following is an active element? A. 15 K resistors. B. 10 mH Inductor C. 25 pF Capacitor D. 10 V power supply

Answer 27

D. 10 V power supply.

Question 28

A lightbulb is 60 Watts. Operated at 120 V, how much current does it draw?

Answer 28

0.5 amperes

Question 29

A number 12 wire, compared to a number 6 wire Is? A. Is longer B. Is shorter C. Is smaller in diameter D. Is larger in diameter

Answer 29

C. Is smaller in diameter

Question 30

A fuse with a higher- than-required rating used in an electrical circuit? A. Improved safety. Be. Increases maintenance. C. May not work properly. D. Is less expensive.

Answer 30

C. May not work properly

Question 31

Neutral wire is always

Answer 31

Whitish or natural

Question 32

To measure electrical power you would use a?

Answer 32

Wattmeter