Engineering Shit

Question 1

What are the 5 types of constraints?

Answer 1

Compression, tension, torsion, deflection, shearing

Question 2

Description of compression

Answer 2

Forces that tend to crush it

Question 3

Description of tension

Answer 3

Forces that tend to stretch it

Question 4

description of torsion

Answer 4

forces that tend to twist it

Question 5

description of deflection

Answer 5

forces that tend to bend it

Question 6

description of shearing

Answer 6

forces that tend to cut it

Question 7

hand squeezing a wet sponge is an example of which constraint?

Answer 7

compression

Question 8

a foot crushing a can is an example of which constraint?

Answer 8

compression

Question 9

copper stretched into a wire is an example of which constraint?

Answer 9

tension

Question 10

an earthquake twisting a bridge is an example of which constraint?

Answer 10

torsion

Question 11

a hand wringing a wet towel is an example of which constraint?

Answer 11

torsion

Question 12

fish bending a fishing rod is an example of which constraint?

Answer 12

deflection

Question 13

clothes weighing down a clothesline is an example of which constraint?

Answer 13

deflection

Question 14

scissors cutting paper is an example of which constraint?

Answer 14

shearing

Question 15

metal cutters trimming shapes from metal is an example of which constraint?

Answer 15

shearing

Question 16

whats the symbol for compression?

Answer 16

two arrows facing each other

Question 17

whats the symbol for tension

Answer 17

two arrows facing apart

Question 18

whats the symbol for torsion?

Answer 18

two arrows in a circular shape

Question 19

whats the symbol for deflection?

Answer 19

three arrows: middle one facing up and other two downwards

Question 20

whats the symbol for shearing?

Answer 20

two arrows facing each other except the arrowhead is half off???

Question 21

what does constraint mean?

Answer 21

the effects of eternal forces upon objects

Question 22

what is material deformation?

Answer 22

constraints have a tendency to deform objects/change their shape

Question 23

what are the three types of material deformation?

Answer 23

elastic, plastic, fracture

Question 24

what is the description of elastic?

Answer 24

a temporary change in the shape or dimensions of the material. When constraint is removed, the material returns back to its original shape.

Question 25

a rope pulled tightly by a mountain climber is an example of which material deformation?

Answer 25

elastic

Question 26

a rope becoming frayed is an example of which deformation?

Answer 26

plastic

Question 27

what is the description for plastic?

Answer 27

a permanent change in the shape or dimensions of the material

Question 28

what is the description for fracture?

Answer 28

the material breaks

Question 29

a glass breaking is an example of which material deformation?

Answer 29

fracture

Question 30

what is degradation? Can protection be used?

Answer 30

the decline in its properties due to the effects of its environment. protection can be used to prevent or delay degradation such as zinc coating, anti-rust treatment, varnish, etc.

Question 31

what is hardness?

Answer 31

ability to resist indentation, abrasion (scratches) deformation

Question 32

what is resilience?

Answer 32

the ability to resist shocks without breaking- often by deforming and returning to its original shape.

Question 33

what is stiffness?

Answer 33

the ability to retain its original shape when subjected to a constraint

Question 34

what is toughness?

Answer 34

the ability of a material to absorb energy and plastically deform without fracturing (does not return to its original shape)

Question 35

what is ductility?

Answer 35

the ability to be stretched into a wire without breaking (*property of metals used for manufacturing only)

Question 36

what is malleability?

Answer 36

the ability to be flattened into a sheet or bent (shaped) without breaking (*property of metals used for manufacturing only)

Question 37

what are the 7 mechanical properties of metals? (MRSEDTH)

Answer 37

Malleability, resilience, stiffness, elasticity. ductility, toughness, hardness

Question 38

what are links?

Answer 38

a link holds two or more parts of the same technological object together

Question 39

t/f: glue is considered a linking component

Answer 39

true

Question 40

what is the description of a direct link?

Answer 40

two parts held together without a linking component

Question 41

what is the description of an indirect link?

Answer 41

a linking component is required to hold two parts together

Question 42

im not going over rigid/flexible and complete/partial cause they're ez

Answer 42

yay

Question 43

what is the description of a removable link?

Answer 43

the linked parts can be separated without damaging either their surfaces or the linked component

Question 44

what is the description of a non-removable link?

Answer 44

the linked parts cannot be separated without damaging either their surfaces or the linked component

Question 45

what is the function of a guiding control?

Answer 45

to guide the motion of moving parts

Question 46

what are the three types of guiding controls?

Answer 46

translational, rotational, helical

Question 47

what is a driver component?

Answer 47

receives the forces requires to activate the system (ex petal on a bike)

Question 48

what is the driven component?

Answer 48

receives the motion and transfers it to another part (ex wheel on a bike)

Question 49

what is the intermediate component?

Answer 49

located between the driver and driven components. a motion transmission system may have several intermediate components. (ex chain on bike transferring motion from petal to wheel)

Question 50

how can a system be considered reversible?

Answer 50

if the driver and driven component can be interchanged and the system still functions. opposite for irreversible systems.

Question 51

review motion transmission/transformation systems cause they aint here

Answer 51

;)