Basic Electricity

Question 1

What is the function of an electro motor?

Answer 1

To convert electrical energy to kinetic energy

Question 2

Define specific gravity

Answer 2

The ratio of weight of a given volume of a material in the same volume of pure water.
Check for buoyancy

Question 3

What are the 5 methods of producing electricity?

Answer 3

1. Solar
2. Chemical
3. Magnetic
4. Piezoelectric
5. Thermal couple

Question 4

What is the function of an inverter?

Answer 4

To convert DC to AC

Question 5

What is the purpose of a circuit protector?

Answer 5

To protect the wires.

Conductor

Question 6

Define a thermal couple:

Answer 6

2 dissimilar types of metals that produce electricity when heat is applied.
(Constantine & Iron)

Question 7

What are the 5 components of a circuit?

Answer 7

1. Source power
2. Conductor
3. Protection device
4. Switch
5. Load

Question 8

Conductor spins inside the magnetic is a….?

Answer 8

Generator

Question 9

Magnet spins inside the conductor is a…?

Answer 9

Alternator

Question 10

What is the specific gravity of a lead-acid battery?

Answer 10

(1.275 - 1.300)

Question 11

What is conventional theory of electricity?

Answer 11

Electron flows from positive to negative.

+ to -

Question 12

What is the quantity of electron flow measured in?

Answer 12

Coloumb

Question 13

What are the 5 factors that determine inductance?

Answer 13

1. Type/shape of core
2. Amount of turns around core
3. Type of conductor
4. Size of core
5. Amount of power applied to coil

Question 14

How do you find total CAPACITANCE in a series circuit?

Answer 14

1/C1 + 1/C2 + 1/C3 ….

Question 15

What is the definition of a battery?

Answer 15

To convert chemical energy to electrical energy

Question 16

Z=R•R+(Xl-Xc)2

Square root

Answer 16

Formula for impedance

Question 17

Define a parallel circuit.

Answer 17

Electrons have multiple paths to travel

Question 18

What is frequency?

Answer 18

Is the # of cycles per second

Question 19

Define Ohms Law:

Answer 19

E
I = —
R

Question 20

What are 2 functions of a diode?

Answer 20

1. Rectify AC –> DC

2. Electronic check valve

Question 21

What is the formula for:

X of L?

Answer 21

2 x Pi(3.1416)(f=400hz)L

Question 22

What is the total resistance of an AC circuit?

Answer 22

Impedance =Z

Question 23

What is the difference between a:

1) Primary battery
2) Secondary battery

Answer 23

1) primary =
non-rechargeable

2) secondary =
rechargeable

Question 24

What 3 factors determine

Capacitance?

Answer 24

1. Plate Area
2. Distance between plate
3. Dielectric

Question 25

Another name for An electromagnet is…?

Answer 25

A relay

Question 26

What are the 2 functions of a transistor?

Answer 26

1) signal amplifier

2) micro switch

Question 27

Amplitude is defined as?:

Answer 27

The distance from + peak to - peak in a cycle of a sine wave