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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. Placed at goods intake - Before and after a unit operation - At the end of a line
water activity
Pin and disc mill
Magnetic separators and metal detection
nip
2. Used to mill wheat- cereals and flours
egg yolk
Specific heat
rollers
sugar content
3. 3 things used for size reduction
attrition mills
forming
oil/vinegar
shear - impact - compression
4. Amount of energy from solid to liquid and vice versa
oil/vinegar
heat
Latent heat of fusion
disc mill
5. 3 components of mixing liquids
Mixers for Low-or Medium Viscosity Liquids
roller
egg yolk
longitudinal - radial - rotational
6. Tumbling action inside a rotating vessel - Screw type - Double Reversing agitators
mixers for dry powder or particulate solids
baffle and angle
disc mill
relative density
7. The breakdown of solid material through the application of mechanical forces- size reduction
Comminution
ductility
peeling
laminar
8. Force that causes it to have friction with itself
strain
latent heat of vaporization
shear
screens
9. 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.
baffle and angle
peeling
vacuum cooling
mass balance
10. Mixing component that is undesired
rotational
strain
stress
ductility
11. Helps prevent blinding
strain
vibrating
relative density
egg yolk
12. Each thing we do to prevent degradation is one hurdle- name an example- packaging
size reduction ratio
second pressure drop
hurdle technologies
nip
13. Shear and impact forces - used for spice manufacturing - 70:30 impact predominated
Miscibility
mass balance
mixers for high viscosity liquids
Pin and disc mill
14. Loss of soluble components (e.g. sugar) - Cost of water and water disposal - Accelerate microbial/biological degradation
mixers for dry powder or particulate solids
Miscibility
roblems with wet cleaning
strain
15. The ability to form a homogenous mixture
Miscibility
cutting- miller- pulper
Specific heat
relative density
16. Linear
sugar content
laminar
nip
panning
17. Distance between rollers
First stage to create small particle size- second to disperse clumping
nip
grading
shear- thinning fluids
18. Why do we use two pressure drops? EXAM QUESTION
reynolds number
pulping
First stage to create small particle size- second to disperse clumping
rotational
19. Efficient (minimize losses) - Low Cost - No product degradation
peeling
hammer mill
impact
forced- air cooling
20. 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
newtonian fluid
shear- thinning fluids
emulsifying/homogenizing
hammer mill
21. Emulsifier in mayo
egg yolk
heat
shear- thinning fluids
shear - impact - compression
22. Efficient mixing is achieved by creating and recombining fresh surfaces
kneading
Problems with dry cleaning methods
colloids
high viscosity liquids
23. Force between the layers in the fluid
sol
vacuum cooling
Problems with dry cleaning methods
shear stress
24. Generally mixed with slow-speed - vertical-shaft impellers such as a anchor and gate agitator
newtonian fluid
high viscosity liquids
screens
Mixers for Low-or Medium Viscosity Liquids
25. To achieve a uniform distribution of the components of flow
Comminution
shear stress
attrition mills
goal of mixing
26. Gum- fruit by the foot
ductile foods
roller
hammer mill
sol
27. Most energy used for size reduction goes to
heat
stress
colloids
emulsifying/homogenizing
28. A friable food is
crumbly
homogenization
ductile foods
egg yolk
29. Multiple paddle agitators - Planetary/Orbital - Z-Blade - Rotor-Stator
homogenization
shear - impact - compression
mixers for high viscosity liquids
Electrostatic separators
30. 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
hydrocooling
stress
longitudinal - radial - rotational
vacuum cooling
31. Used to chop meat and harder fruits and veggies into pulp
bowl chopper
reynolds number
nip
baffle and angle
32. Measures specific gravity
rollers
hurdle technologies
First stage to create small particle size- second to disperse clumping
hydrometer
33. Dispersed phase in mayo
relative density
oil/vinegar
stress
forming
34. 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
nip
difference between rolls and biscuits
stress
baffle and angle
35. Pressure- pushing but not dynamically loaded
mixers for dry powder or particulate solids
First stage to create small particle size- second to disperse clumping
kneading
compressive force
36. Pseudoplastic
Mixers for Low-or Medium Viscosity Liquids
heat
shear- thinning fluids
turbulent
37. = mass of liquid
latent heat
relative density
Specific gravity
ductility
38. Size reduction equipment in order of decreasing size
hammer mill
Comminution
Pin and disc mill
cutting- miller- pulper
39. Advantages: chill and store in one place limits handling - Disadvantages: Can dry/dehydrate produce
kneading
Miscibility
disc mill
forced- air cooling
40. 4 types of hydrocoolers
attrition mills
strain
batch - convayer - immersion - truck
Specific heat
41. Involves tumbling in a drum with a silicon carbide or carborundum surface
homogenization
batch - convayer - immersion - truck
peeling
abrasion peeling
42. Flour milled using this
roller
latent heat
pulping
hydrocooling
43. May be single (one stationary casing and a frooved one that rotates) or double- where the two surfaces rotate in opposite directions - Dress of millstone will determine texture of the final product
hydrometer
roller
disc mill
vibrating
44. Swirls in the flow
homogenization
Air classifiers (AKA aspiration cleaners
roller
turbulent
45. Formed when one substance of very small particle size is dispersed through another substance and the two substances are immiscible
colloids
Miscibility
sorting
hydrocooling
46. Generally used for products with high mechanical strength and low moisture - Relies on density and area difference
Mixers for Low-or Medium Viscosity Liquids
Air classifiers (AKA aspiration cleaners
disc mill
shear rate
47. Used to be was dividing things on one characteristic
sorting
non- newtonian fluids
over-run
disc mill
48. Energy from liquid to gas and vice versa
latent heat of vaporization
hydrocooling
shear stress
impact
49. Creates lots of heat - main force are shear action
vacuum cooling
goal of mixing
attrition mills
baffle and angle
50. Ratios above 100:1
fine grine
heat
shear stress
vacuum cooling