michelin test notes part 1: area and volume, ratios/fractions, right angle trig, electricity theory

Question 1

area of rectangle

Answer 1

lw, units²

Question 2

area of square

Answer 2

l² or lw, units²

Question 3

area of circle

Answer 3

πr², units²

Question 4

circumference of circle

Answer 4

2πr, units not squared

Question 5

area of cylinder

Answer 5

2πrh + 2πr², units²

Question 6

volume of rectangle

Answer 6

lwh, units³

Question 7

volume of square

Answer 7

lwh, units³

Question 8

volume of circles/spheres

Answer 8

4/3πr³, units³

Question 9

volume of cylinders

Answer 9

πr²h, units³

Question 10

area of triangle

Answer 10

1/2(b)(h), units²

Question 11

adding fractions

Answer 11

mult everything by an lcd then add together and simplify

Question 12

subtracting fractions

Answer 12

mult everything by a lcd then subtract it all then simplify

Question 13

multiplying fractions

Answer 13

mult straight across then simplify

Question 14

dividing fractions

Answer 14

kcf - keep change flip

Question 15

how to solve for an unknown value in a triangle

Answer 15

sohcahtoa

Question 16

all angles in a triangle add to ___

Answer 16

180 degrees

Question 17

radians in a circle

Answer 17

there are 2, first on the left going counterclockwise, second on the right

Question 18

magnetism

Answer 18

the force exerted by 2 magnets

Question 19

ohms law

Answer 19

V = IR (voltage = current*resistance)

Question 20

watts law (power law)

Answer 20

P = VI (power = voltage*current)

Question 21

what is power (electricity)

Answer 21

the rate of work done/transferred into an electrical circuit, measured in watts

Question 22

what is power (physics equation)

Answer 22

P(watts) = w(joules)/time

Question 23

voltage

Answer 23

the force that drives current through a loop, volts

Question 24

current

Answer 24

the flow of charged particles (electrons or ions) moving through a conductor, measured in amps

Question 25

resistance

Answer 25

the measure of the force that counteracts current on an object, measured in ohms (Ω)

Question 26

current and voltage are related how

Answer 26

proportionally

Question 27

current and resistance are related how

Answer 27

inversely

Question 28

resistance and power are related how

Answer 28

proportionally

Question 29

resistance and voltage are related how

Answer 29

proportionally

Question 30

inductance

Answer 30

the tendency of a conductor to resist change in the current flowing through it

Question 31

inductor

Answer 31

a component that resists changes in current flow, can also store magnetic energy

Question 32

circuit

Answer 32

a complete path of current

Question 33

inductive reactance

Answer 33

a measure of an inductors power, measured in ohms

Question 34

DC (direct current)

Answer 34

voltage constant, current flows in one direction

Question 35

AC (alternating current)

Answer 35

voltage not constant, current can change directions

Question 36

electron definition

Answer 36

a subatomic particle with a negative charge that produces electricity when it passes through a conductor

Question 37

what makes a positive/negative
charge

Answer 37

more protons than electrons: positive charge/more electrons than protons: negative charge. like charges repel, opposites attract

Question 38

short circuit

Answer 38

when an unintended path forms with low resistance in a circuit, somehow skipping resistors