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Food Processing
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Subjects
:
industries
,
engineering
Instructions:
Answer 50 questions in 15 minutes.
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study here
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Limited number of applications where contaminants have a different surface charge from the raw material
goal of mixing
Electrostatic separators
mixers for dry powder or particulate solids
reynolds number
2. Measures specific gravity
bowl chopper
caustic peeler
Electrostatic separators
hydrometer
3. To achieve a uniform distribution of the components of flow
goal of mixing
Specific gravity
high viscosity liquids
rotational
4. Formed when one substance of very small particle size is dispersed through another substance and the two substances are immiscible
disc mill
crumbly
colloids
Miscibility
5. Linear
latent heat
colloids
laminar
Electrostatic separators
6. Ratio below 8:1
course grind
screens
over-run
Miscibility
7. Velocity gradient that is formed- relative rate between the layers
bulk density
batch - convayer - immersion - truck
Pin and disc mill
shear rate
8. Leavening agent- breads have the yeast with CO2 giving us the lift in the bread- want this to take place before the breaking - Biscuit- leavening agent - chemical reaction- lots take place during baking process
difference between rolls and biscuits
emulsifying/homogenizing
panning
turbulent
9. Gum- fruit by the foot
oil/vinegar
ductile foods
over-run
longitudinal - radial - rotational
10. Mass
caustic peeler
over-run
nip
bulk density
11. Ability to deform permanently without breaking
ductility
fine grine
shear rate
roller
12. Under motion pushing
attrition mills
turbulent
impact
mass balance
13. Creates the smallest particle size
roller
pulping
relative density
hammer mill
14. Placed at goods intake - Before and after a unit operation - At the end of a line
latent heat of vaporization
Magnetic separators and metal detection
roller
strain
15. Concentrated fruit juices - liquid chocolate - and corn flour suspension
non- newtonian fluids
strain
goal of mixing
hydrocooling
16. Helps prevent blinding
baffle and angle
vibrating
non- newtonian fluids
abrasion peeling
17. Rotating vessel slowly deposits material on top
grading
forming
impact
panning
18. Track what goes into a system- account for everything that comes out minus what stays in the system
shear- thinning fluids
egg yolk
mass balance
roller
19. Loss of soluble components (e.g. sugar) - Cost of water and water disposal - Accelerate microbial/biological degradation
mixers for dry powder or particulate solids
roblems with wet cleaning
shear
mixers for high viscosity liquids
20. 3 things used for size reduction
shear - impact - compression
pulping
newtonian fluid
latent heat
21. Linear relationship between sheer rate and sheer stress
latent heat
newtonian fluid
shear stress
peeling
22. Pseudoplastic
latent heat
wet cleaning equipment
panning
shear- thinning fluids
23. Swirls in the flow
ductility
difference between rolls and biscuits
mixers for dry powder or particulate solids
turbulent
24. Efficient mixing is achieved by creating and recombining fresh surfaces
kneading
size reduction ratio
grading
laminar
25. Size reduction equipment in order of decreasing size
latent heat
Electrostatic separators
roblems with wet cleaning
cutting- miller- pulper
26. The ability to form a homogenous mixture
Miscibility
Electrostatic separators
non- newtonian fluids
caustic peeler
27. Used to be was dividing things on one characteristic
Problems with dry cleaning methods
sorting
colloids
Air classifiers (AKA aspiration cleaners
28. Generally mixed with slow-speed - vertical-shaft impellers such as a anchor and gate agitator
impact
high viscosity liquids
batch - convayer - immersion - truck
hydrometer
29. Paddle - Multiple Impeller - Turbine - Propeller
Pin and disc mill
Mixers for Low-or Medium Viscosity Liquids
forming
size reduction ratio
30. Involves tumbling in a drum with a silicon carbide or carborundum surface
baffle and angle
colloids
abrasion peeling
hammer mill
31. A friable food is
roblems with wet cleaning
high viscosity liquids
stress
crumbly
32. Each thing we do to prevent degradation is one hurdle- name an example- packaging
hurdle technologies
Comminution
colloids
hydrocooling
33. Why do we use two pressure drops? EXAM QUESTION
First stage to create small particle size- second to disperse clumping
stress
Electrostatic separators
latent heat of vaporization
34. Used to chop meat and harder fruits and veggies into pulp
Electrostatic separators
high viscosity liquids
bowl chopper
latent heat
35. Ingredients in mayo
emulsifying/homogenizing
attrition mills
egg - vinegar - oil
hurdle technologies
36. Dispersed phase in mayo
oil/vinegar
vacuum cooling
egg - vinegar - oil
strain
37. High-speed mixers - Hydroshear homogenizer - Membrane emulsifiers - Pressure homogenizers - Rotor-stator homogenizers - Ultrasonic- sound energy to break particles
oil/vinegar
emulsifying/homogenizing
ductility
forced- air cooling
38. Separate products by size
course grind
screens
wet cleaning equipment
newtonian fluid
39. Advantages: Rapid cooling; can handle large quantities; prevents dehydration - Disadvantages: Can encourage diseases; not all products tolerate wetting; restrictions on packaging and stacking arrangements; capital costs can be high
vacuum cooling
emulsifying/homogenizing
hydrocooling
water activity
40. A fluid suspension of a colloidal solid in a liquid
oil/vinegar
sorting
sol
emulsifying/homogenizing
41. 4 types of hydrocoolers
hammer mill
water activity
batch - convayer - immersion - truck
shear
42. The breakdown of solid material through the application of mechanical forces- size reduction
high viscosity liquids
Comminution
Problems with dry cleaning methods
hydrocooling
43. Creates lots of heat - main force are shear action
attrition mills
Air classifiers (AKA aspiration cleaners
disc mill
over-run
44. The amount of energy it takes to change the state
fine grine
grading
vacuum cooling
latent heat
45. Requires size reduction of dispersed particles by the application of intense shearing forces
water activity
homogenization
forced- air cooling
heat
46. Multiple paddle agitators - Planetary/Orbital - Z-Blade - Rotor-Stator
forming
mixers for high viscosity liquids
baffle and angle
cutting- miller- pulper
47. Shearing breaks up fat globules in milk- but they still want to clump- pass through ------ disperses them
mixers for high viscosity liquids
ductile foods
compressive force
second pressure drop
48. Force per unit area
stress
second pressure drop
oil/vinegar
baffle and angle
49. Used to mill wheat- cereals and flours
bulk density
fine grine
rollers
newtonian fluid
50. Deformation or stretch- change in length divided by the original length
strain
rollers
shear rate
difference between rolls and biscuits
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