Basic Electricity

Question 1

Does a proton have a positive or negative charge?

Answer 1

Positive

Question 2

What is static electricity?

Answer 2

Electricity that does not move

Question 3

How do you eliminate static electricity from a belt drive?

Answer 3

Applying a conductive dressing

Question 4

Using the left hand rule, which direction do your fingers point?

Answer 4

In the direction of the magnetic field

Question 5

What is electric current?

Answer 5

The flow of electrons

Question 6

What is the special resistor used in an ammeter?

Answer 6

Shunt

Question 7

If a resistor is marked with only 3 color bands, what is the tolerance of the resistor?

Answer 7

20%

Question 8

What is the insulation in a capacitor called?

Answer 8

Dielectric

Question 9

Two variable capacitors that work together make up a…?

Answer 9

Gang capacitor

Question 10

A device that uses one kind of effect to produce another effect is called a …..?

Answer 10

Transducer

Question 11

A wire measuring 1-mil in diameter has a cross-sectional area of 1-…..?

Answer 11

Circular mil

Question 12

The main purpose of soldering an electrical splice is …..?

Answer 12

To make good electrical contact

Question 13

One Coulomb per second is defined as ….?

Answer 13

Ampere

Question 14

Before trying to solve a series-parallel problem you should try to divide the circuit into …?

Answer 14

Simpler parts

Question 15

In making calculations involving alternate currect you should use the …?

Answer 15

Effective Value

Question 16

The total opposition to the flow of current in an AC circuit is called …?

Answer 16

Impedence

Question 17

The 3rd element in a triod is called the …?

Answer 17

Control grid

Question 18

In N type material conduction occurs by …?

Answer 18

Electron movement

Question 19

The center section of a transistor is called the …?

Answer 19

Base

Question 20

What is the function of a commutator?

Answer 20

Keeps current flowing out of the generator in the same direction at all times

Question 21

An electric circuit consists of what 3 parts?

Answer 21

Power source, conductor, load

Question 22

What is the basic function of all switches?

Answer 22

Opening and closing electric circuits

Question 23

What does the polarity of the voltage source determine?

Answer 23

Direction of current flow in the circuit

Question 24

What does the amount of voltage supplied by the source determine?

Answer 24

How much current will flow

Question 25

Name two factors that determine how much current will flow in a DC circuit

Answer 25

Amount of voltage supplied by power source and how well the load.wires conduct current

Question 26

What is conductance?

Answer 26

The ease with which a metal allows current to flow

Question 27

How can you produce any kind of resistance effect you want?

Answer 27

Conductor material, cross-sectional area, length

Question 28

Is the resistance greater in the load or the circuit wiring?

Answer 28

Load

Question 29

Do power sources have internal resistance?

Answer 29

Yes

Question 30

What material is most often used in resistors?

Answer 30

Carbon

Question 31

What are 2 methods of decreasing large current in a circuit with a fixed voltage source?

Answer 31

Adding resistors to the circuit and increasing the resistance of connecting wires

Question 32

What is resistor tolerance?

Answer 32

How much above or below nominal value actual value may be

Question 33

What is the wattage rating?

Answer 33

Current rating of a resistor

Question 34

What are some advantages of composition resistors?

Answer 34

Small, rugged, low cost

Question 35

What happens to the primary current when secondary current in a transformer increase?

Answer 35

It automatically increases

Question 36

In a circuit diagram what is used to indicate the in-phase terminal of the two windings?

Answer 36

Dots