the electronic stytem

Question 1

what does force mean

Answer 1

The force that makes electrons flow in a conductor is called voltage symbol and is measures in volts.

Question 2

what is meant by current

Answer 2

An electric current is a flow of electrons when we measure current in a circuit we are measuring the number of electrons passing a given point in a second current

measure in amps

Question 3

what is the symbol, measurement, symbol of the measurement of voltage

Answer 3

v, volts , v

Question 4

what is the symbol, measurement, symbol of the measurement of current

Answer 4

I, amps, A

Question 5

what is the symbol, measurement, symbol of the measurement of residence

Answer 5

R ohms, horse shoe symbol

Question 6

what is mega-M

Answer 6

millions

Question 7

what is Base-unit

Answer 7

doesn’t have any

Question 8

what is kilo-k

Answer 8

thousands

Question 9

what is mili-measure the resistance

Answer 9

millions

Question 10

what is a resistor

Answer 10

-to accurately measure the resistance of a component
-remove from the circuit
-and measured using standard multimeter

Question 11

what are electricity conductors

Answer 11

materials that are suitable for carrying electrical current

Question 12

electricity insulaters

Answer 12

materials that prevent electrical flow

Question 13

semi conductors materials

Answer 13

displays both conductive and insulated properties

Question 14

examples of conductors

Answer 14

graphite
gold
copper #

Question 15

example of insulators

Answer 15

plastic
wood
rubber

Question 16

examples of semi conductors

Answer 16

silicon germanium

Question 17

what is the input

Answer 17

the input senses and reacts to specific changes

Question 18

what is the prosses

Answer 18

the control reacts to change in the imput and then controls or changes the output

Question 19

what is the output

Answer 19

it switches on or off by the control parts of the circuit

Question 20

what does the batery do in a circut

Answer 20

acts as a source power for the electronical circuit

Question 21

what does a thiristor do

Answer 21

as temperature rises the resistors of the thermistor increases and the temperature falls the resistant decreases

Question 22

what does a variable resistor do `

Answer 22

1increases or decreases the amount of resistance to flow of electrons

Question 23

what does the LDR do

Answer 23

A piece of semi conduct material that has a low resistance in the light conditions and high resistance when is dark

Question 24

what is a diode

Answer 24

is a piece of semi conductive material that only allows current to flow in one direction

Question 25

what is a resistor

Answer 25

resistor protects components against voltage spikes components that are sensitive to high electronic current such as LEDS

Question 26

!!!!!!!! learn signs in the book !!!!!!!!!!

Question 27

how do you design a pvc board

Answer 27

-design PCB layout
-use a UV light box to transfer the layout
-develop layout using sodium -hydroxide/developer/ 30 seconds
-rince with water
-drill holes using PCB drill

Question 28

what are the safety precaution for a PCB board

Answer 28

ruber golves
dont look at the UV light
if any acid gets on you skin seek medical attention
PCB drill—-> hair tied back safety googles wear an apron

Question 29

how to mark a pcb with a router

Answer 29

design layout
load layout into a solution
put board in machine —>router
router cuts engraves the layout + holes