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Test your basic knowledge |
Food Processing
Start Test
Study First
Subjects
:
industries
,
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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. Soaking tanks (with or w/o stirring/paddles) - Flotation washing (fluming) - Spray washers (belts - drums) - Brush washers - Ultrasonic cleaners
wet cleaning equipment
longitudinal - radial - rotational
roblems with wet cleaning
emulsifying/homogenizing
2. The ability to form a homogenous mixture
abrasion peeling
Miscibility
longitudinal - radial - rotational
sol
3. = initial avg particle size/final avg particle size
size reduction ratio
baffle and angle
pulping
abrasion peeling
4. Used to be was dividing things on one characteristic
sorting
impact
pulping
Specific gravity
5. Dispersed phase in mayo
Magnetic separators and metal detection
hurdle technologies
oil/vinegar
fine grine
6. 4 types of hydrocoolers
laminar
batch - convayer - immersion - truck
screens
Problems with dry cleaning methods
7. Efficient (minimize losses) - Low Cost - No product degradation
peeling
mixers for high viscosity liquids
bowl chopper
sorting
8. Advantages: chill and store in one place limits handling - Disadvantages: Can dry/dehydrate produce
vacuum cooling
forced- air cooling
Pin and disc mill
abrasion peeling
9. What factors affect the degree of mixing that can be achieved with dry powders or particulate solids?
over-run
relative density
Mixers for Low-or Medium Viscosity Liquids
emulsifying/homogenizing
10. Paddle - Multiple Impeller - Turbine - Propeller
bulk density
Mixers for Low-or Medium Viscosity Liquids
Electrostatic separators
impact
11. Involves tumbling in a drum with a silicon carbide or carborundum surface
grading
abrasion peeling
sugar content
nip
12. Pseudoplastic
shear- thinning fluids
nip
oil/vinegar
batch - convayer - immersion - truck
13. Velocity gradient that is formed- relative rate between the layers
course grind
Air classifiers (AKA aspiration cleaners
peeling
shear rate
14. Not always effective (attached soil) - Can be dusty (explosion hazard) - Recontamination hazard - Can damage product
non- newtonian fluids
difference between rolls and biscuits
egg yolk
Problems with dry cleaning methods
15. = mass of liquid
non- newtonian fluids
roller
Specific gravity
laminar
16. Multiple paddle agitators - Planetary/Orbital - Z-Blade - Rotor-Stator
mixers for high viscosity liquids
Magnetic separators and metal detection
screens
course grind
17. Deformation or stretch- change in length divided by the original length
emulsifying/homogenizing
oil/vinegar
shear - impact - compression
strain
18. The breakdown of solid material through the application of mechanical forces- size reduction
Comminution
homogenization
Magnetic separators and metal detection
shear - impact - compression
19. Linear relationship between sheer rate and sheer stress
newtonian fluid
Mixers for Low-or Medium Viscosity Liquids
bowl chopper
heat
20. Generally used for products with high mechanical strength and low moisture - Relies on density and area difference
over-run
colloids
latent heat
Air classifiers (AKA aspiration cleaners
21. A fluid suspension of a colloidal solid in a liquid
sol
reynolds number
strain
over-run
22. Emulsifier in mayo
Comminution
vibrating
non- newtonian fluids
egg yolk
23. Formed when one substance of very small particle size is dispersed through another substance and the two substances are immiscible
colloids
compressive force
cutting- miller- pulper
Comminution
24. Ingredients in mayo
hydrometer
egg - vinegar - oil
forced- air cooling
longitudinal - radial - rotational
25. Requires size reduction of dispersed particles by the application of intense shearing forces
sugar content
Specific gravity
shear - impact - compression
homogenization
26. Hammers hit food but force it up to the top chamber - impact to the top of the machine- can change the screen size- can't leave impact zone until it is small enough to go through the screen
goal of mixing
hammer mill
crumbly
egg yolk
27. Amount of energy from solid to liquid and vice versa
Latent heat of fusion
mixers for high viscosity liquids
hydrometer
over-run
28. Each thing we do to prevent degradation is one hurdle- name an example- packaging
egg - vinegar - oil
heat
wet cleaning equipment
hurdle technologies
29. To achieve a uniform distribution of the components of flow
goal of mixing
Comminution
water activity
ductility
30. 3 things used for size reduction
ductile foods
longitudinal - radial - rotational
shear - impact - compression
water activity
31. High-speed mixers - Hydroshear homogenizer - Membrane emulsifiers - Pressure homogenizers - Rotor-stator homogenizers - Ultrasonic- sound energy to break particles
non- newtonian fluids
emulsifying/homogenizing
impact
over-run
32. 3 components of mixing liquids
bowl chopper
crumbly
rollers
longitudinal - radial - rotational
33. Measures specific gravity
impact
hydrometer
crumbly
over-run
34. Gum- fruit by the foot
screens
second pressure drop
Miscibility
ductile foods
35. Fruit is dipped in a 1 to 2% hot sodium hydroxide solution (lye) and then pressure washed to remove skin. Alternatively - involves dipping in 10% sodium hydroxide and using rubber discs or rollers to remove the skin.
vibrating
homogenization
caustic peeler
mixers for dry powder or particulate solids
36. Used to chop meat and harder fruits and veggies into pulp
mass balance
peeling
bowl chopper
longitudinal - radial - rotational
37. Dividing based on several characteristics capable of automatically
grading
sugar content
vibrating
size reduction ratio
38. Rotating vessel slowly deposits material on top
baffle and angle
panning
mixers for high viscosity liquids
compressive force
39. Placed at goods intake - Before and after a unit operation - At the end of a line
hurdle technologies
hydrometer
rollers
Magnetic separators and metal detection
40. Amount of energy it takes to change the temperature
Specific heat
mass balance
hydrometer
shear- thinning fluids
41. Tumbling action inside a rotating vessel - Screw type - Double Reversing agitators
sugar content
roblems with wet cleaning
mixers for dry powder or particulate solids
stress
42. Advantages: Suitable for leafy vegetables; does NOT require spraying - or immersion with water - hence won't spread disease. High energy efficiency - Disadvantages: Some product shrinkage due to water loss.
Comminution
impact
Magnetic separators and metal detection
vacuum cooling
43. Distance between rollers
bowl chopper
nip
Magnetic separators and metal detection
hydrometer
44. Track what goes into a system- account for everything that comes out minus what stays in the system
nip
forming
Latent heat of fusion
mass balance
45. Energy from liquid to gas and vice versa
oil/vinegar
latent heat of vaporization
bulk density
pulping
46. Generally mixed with slow-speed - vertical-shaft impellers such as a anchor and gate agitator
attrition mills
heat
ductility
high viscosity liquids
47. Force between the layers in the fluid
newtonian fluid
sugar content
batch - convayer - immersion - truck
shear stress
48. Ratio below 8:1
shear- thinning fluids
sol
ductile foods
course grind
49. Available moisture (relative vapor pressure)
Specific gravity
rollers
Miscibility
water activity
50. Ability to deform permanently without breaking
ductility
turbulent
ductile foods
batch - convayer - immersion - truck