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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. Used to chop meat and harder fruits and veggies into pulp
bowl chopper
non- newtonian fluids
Magnetic separators and metal detection
newtonian fluid
2. Most energy used for size reduction goes to
egg - vinegar - oil
impact
heat
over-run
3. The amount of energy it takes to change the state
attrition mills
latent heat
hydrocooling
hurdle technologies
4. Formed when one substance of very small particle size is dispersed through another substance and the two substances are immiscible
abrasion peeling
shear rate
colloids
longitudinal - radial - rotational
5. Distance between rollers
ductile foods
second pressure drop
nip
abrasion peeling
6. Loss of soluble components (e.g. sugar) - Cost of water and water disposal - Accelerate microbial/biological degradation
hurdle technologies
over-run
roblems with wet cleaning
egg yolk
7. 4 types of hydrocoolers
newtonian fluid
batch - convayer - immersion - truck
vibrating
roller
8. Energy from liquid to gas and vice versa
reynolds number
oil/vinegar
caustic peeler
latent heat of vaporization
9. Amount of energy it takes to change the temperature
Mixers for Low-or Medium Viscosity Liquids
Specific heat
colloids
hydrometer
10. Not always effective (attached soil) - Can be dusty (explosion hazard) - Recontamination hazard - Can damage product
panning
shear rate
Problems with dry cleaning methods
fine grine
11. Measures specific gravity
roller
First stage to create small particle size- second to disperse clumping
hydrometer
emulsifying/homogenizing
12. Linear
laminar
ductility
nip
sorting
13. Mixing component that is undesired
stress
shear - impact - compression
high viscosity liquids
rotational
14. Generally used for products with high mechanical strength and low moisture - Relies on density and area difference
nip
baffle and angle
Air classifiers (AKA aspiration cleaners
Magnetic separators and metal detection
15. Linear relationship between sheer rate and sheer stress
bulk density
forced- air cooling
Latent heat of fusion
newtonian fluid
16. Placed at goods intake - Before and after a unit operation - At the end of a line
hammer mill
mixers for dry powder or particulate solids
over-run
Magnetic separators and metal detection
17. Dimensionless group that describes flow characteristics - includes pipe diameter - average velocity of fluid flow - fluid density - and fluid viscosity.
crumbly
course grind
emulsifying/homogenizing
reynolds number
18. Under motion pushing
egg - vinegar - oil
impact
cutting- miller- pulper
sorting
19. To achieve a uniform distribution of the components of flow
goal of mixing
vibrating
forced- air cooling
baffle and angle
20. = mass of liquid
Magnetic separators and metal detection
Specific gravity
Air classifiers (AKA aspiration cleaners
roller
21. Paddle - Multiple Impeller - Turbine - Propeller
Mixers for Low-or Medium Viscosity Liquids
screens
Comminution
abrasion peeling
22. Soaking tanks (with or w/o stirring/paddles) - Flotation washing (fluming) - Spray washers (belts - drums) - Brush washers - Ultrasonic cleaners
fine grine
wet cleaning equipment
peeling
compressive force
23. 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
hammer mill
Mixers for Low-or Medium Viscosity Liquids
Air classifiers (AKA aspiration cleaners
shear rate
24. Dispersed phase in mayo
oil/vinegar
mass balance
sol
mixers for dry powder or particulate solids
25. Multiple paddle agitators - Planetary/Orbital - Z-Blade - Rotor-Stator
hurdle technologies
mixers for high viscosity liquids
Air classifiers (AKA aspiration cleaners
hydrometer
26. Efficient mixing is achieved by creating and recombining fresh surfaces
longitudinal - radial - rotational
stress
shear- thinning fluids
kneading
27. Tumbling action inside a rotating vessel - Screw type - Double Reversing agitators
relative density
mixers for dry powder or particulate solids
roller
screens
28. High-speed mixers - Hydroshear homogenizer - Membrane emulsifiers - Pressure homogenizers - Rotor-stator homogenizers - Ultrasonic- sound energy to break particles
impact
emulsifying/homogenizing
panning
shear- thinning fluids
29. What can be done to minimize the rotational component in liquid mixing?
baffle and angle
Problems with dry cleaning methods
heat
Specific heat
30. Mass
Problems with dry cleaning methods
rotational
shear
bulk density
31. Force per unit area
stress
size reduction ratio
shear- thinning fluids
shear - impact - compression
32. Flour milled using this
vacuum cooling
roller
impact
hurdle technologies
33. Involves tumbling in a drum with a silicon carbide or carborundum surface
abrasion peeling
shear- thinning fluids
turbulent
heat
34. = (vol of foam - vol liquid)/vol liquid) x 100
over-run
crumbly
Mixers for Low-or Medium Viscosity Liquids
kneading
35. Track what goes into a system- account for everything that comes out minus what stays in the system
longitudinal - radial - rotational
grading
mass balance
sol
36. Creates lots of heat - main force are shear action
attrition mills
shear- thinning fluids
cutting- miller- pulper
kneading
37. Dividing based on several characteristics capable of automatically
Air classifiers (AKA aspiration cleaners
vacuum cooling
grading
latent heat
38. Force that causes it to have friction with itself
kneading
shear
emulsifying/homogenizing
strain
39. Limited number of applications where contaminants have a different surface charge from the raw material
course grind
Electrostatic separators
shear - impact - compression
egg - vinegar - oil
40. Creates the smallest particle size
pulping
sol
Electrostatic separators
attrition mills
41. 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.
Mixers for Low-or Medium Viscosity Liquids
caustic peeler
pulping
course grind
42. Ratio below 8:1
disc mill
course grind
hurdle technologies
strain
43. Available moisture (relative vapor pressure)
Pin and disc mill
Comminution
water activity
emulsifying/homogenizing
44. Used to be was dividing things on one characteristic
sorting
homogenization
rollers
hurdle technologies
45. Shear and impact forces - used for spice manufacturing - 70:30 impact predominated
Pin and disc mill
Magnetic separators and metal detection
ductility
shear- thinning fluids
46. Efficient (minimize losses) - Low Cost - No product degradation
Pin and disc mill
peeling
newtonian fluid
batch - convayer - immersion - truck
47. 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.
peeling
hydrometer
vacuum cooling
shear
48. Generally mixed with slow-speed - vertical-shaft impellers such as a anchor and gate agitator
mixers for high viscosity liquids
roblems with wet cleaning
high viscosity liquids
latent heat
49. Why do we use two pressure drops? EXAM QUESTION
baffle and angle
relative density
First stage to create small particle size- second to disperse clumping
goal of mixing
50. Emulsifier in mayo
egg yolk
caustic peeler
cutting- miller- pulper
latent heat of vaporization